Stainless Cladding Research Articles

Axial compression behaviour of circular concrete-filled stainless-clad bimetallic steel tubular stub columns

The axial compression behaviour of circular concrete-filled stainless-clad bimetallic steel tubular (CFSCBST) stub columns is addressed in this paper by experimental and numerical investigations. A total of five specimens were fabricated and subjected to axial compression loading. The varying parameters in the experimental study included the clad ratio of steel tube, the diameter-to-thickness ratio and the strength of the concrete. A three-dimensional finite element (FE) model was developed and validated against both dependent and independent test data to further study the axial compressive behaviour of circular CFSCBST stub columns in this paper. The parametric studies considering five major parameters, including the strength of the concrete, the substrate steel grade, the clad ratio, the diameter-to-thickness ratio and different bonding conditions of the stainless-clad (SC) bimetallic steel, were carried out by using the verified FE model. The applicability of existing design codes to the circular CFSCBST stub columns was further analysed through comparisons with the numerical results. New design methods based on unified and superposition theory have been proposed herein, which have improved accuracy for predicting the ultimate compression capacity of such circular CFSCBST stub columns.

Effect of oscillating laser cladding on microstructure and properties of stainless steel cladding layers

The laser cladding process is general accompanied by defects such as pores, cracks and uneven microstructure. In order to overcome the above defects, this study introduces the oscillating laser cladding technology, and uses oscillating laser cladding and without-oscillating laser cladding process to manufacturing the stainless steel cladding layers. The microstructure was characterized by XRD, SEM and EDS, and the microhardness, wear resistance and corrosion resistance of the cladding layer were analyzed by using vickers hardness tester, wear tester and electrochemical workstation. The results show that the oscillating laser cladding can have a great effect on the morphology and microstructure of the stainless cladding layer. Among the two cladding process, oscillating laser cladding can prepare a cladding layer with better properties. The grains in the oscillating laser cladding layer are obviously equiaxed, and the grain size is significantly smaller than that of without-oscillating laser cladding layers. In addition, the wear resistance and hardness of the oscillating laser cladding layer are higher than that of the without-oscillating laser cladding layer, but its corrosion resistance is slightly lower than that of the without-oscillating laser cladding layer.

A new experimental methodology for investigating the impact of subsequent welding passes on the properties of the austenitic stainless clad steel plates welded joint: part I – a substrate case study

In this study, the influence of the applying repeated thermal cycling during welding on the microstructural transformations and mechanical properties in Austenitic Stainless Clad-Steel Plates (ASCSP) has been investigated, particularly in the substrate. For this purpose, a novel methodology was used, by filling the entire groove length and gradually shortening the subsequent passes. Afterwards, microstructural characterization of different zones in the welded joint was conducted using optical microscope. Results showed a decrease in acicular ferrite (AF) in the Weld Metal Substrate (WM-S) from the root pass (10 kJ/cm) to the second pass (13.5 kJ/cm). This decrease continued until a total disappearance by the third pass due to a heat input of 17.8 kJ/cm. Vickers micro-hardness test was used to investigate the effect of the subsequent passes on the mechanical properties of the joint. Micro-hardness examination confirms the metallurgical results. It was revealed that micro-hardness variations are influenced by AF percentage and pro-eutectoid ferrite levels.

Low-cycle fatigue behaviour of stainless-clad bimetallic steel welded connections

The stainless-clad (SC) bimetallic steel is the most widely used laminated high-performance steel in construction, which often offers a variety of prominent structural performance and competitive advantages. Welding with electrodes of suitable mechanical properties and corrosion resistance is vital for SC bimetallic steel structures to ensure a complete corrosion-resistant surface. However, the research on welded connections under cyclic actions is very limited. Many recommendation designs and current standards for SC bimetallic steel are primarily developed for precision equipment, and they are not suitable for structural engineering. To this end, this paper aims to investigate the low-cycle fatigue behaviour of butt welded connections with different welding configurations for the SC bimetallic steel. Failure modes, cyclic characteristics and Masing behaviour of typical welded connections were analysed, and the low-cyclic fatigue behaviour was validated using the Basquin-Coffin-Manson model. A new proposed strain energy-based model was also proposed to describe. Differences in the low-cycle fatigue behaviour between the welded connections and the base bimetal were demonstrated, as well as that for various welding configurations. It was found that the low-cycle fatigue life of the welded connections with a transition weld zone is similar to that of these welded connections without a transition weld zone, both being about 60 % to 80 % of the base bimetal's fatigue life. However, the fatigue life of the welded connection with a single filler material is much shorter than that of the previous two, being only 15 % to 30 % of that of the base bimetal. It should be noted that both the adapted Basquin-Coffin-Manson model and the newly proposed strain energy-based model may predict well the low-cycle fatigue life of the three welded connections. Finally, the transition weld zone in these welded connections is recommended to be eliminated in order to simplify the welding procedures, and hence to improve welding efficiency.

Micro-macro properties of stainless-clad bimetallic steel welded connections with different configurations

This paper aims to investigate the microstructure and mechanical properties of S31603 + Q355B stainless-clad (SC) bimetallic steel welded connections with different welding configurations. A comprehensive research approach was employed, including microstructure analysis, static tensile test, impact test, bending test, Vickers hardness distribution measurement, and analysis of welding economy and efficiency. Four types of welded connections were examined to understand their performance variations arising from different welding configurations. Based on the findings, a recommended welding configuration suitable for structural engineering applications was proposed. Research outcomes showed that the decarburization and carbon accumulation zones were observed at the fusion interface during the welding of dissimilar metals. It should be noted that martensite was formed in the substrate, or the base metal, due to diffusion of alloying elements, with a more pronounced effect observed with higher welding heat inputs. In order to minimize the fusion area of dissimilar metals, it is advisable to avoid using a single welding consumable made of stainless steel as the mechanical properties of the welded connection were not significantly influenced by the use of stainless steel welding consumables with higher Nickle (Ni) and Chromium (Cr) alloying content in the transition region. Consequently, the same welding consumable should be employed in the transition region to simplify the welding procedure and to enhance the welding efficiency.

Shear performance of high-strength bolted connections with stainless-clad steel plates in a corrosive environment

Stainless-clad (SC) steel plates offer desirable corrosion resistance at a relatively low cost, but their shear performance in high-strength bolted connections in a corrosive environment has not been fully explored. In this study, monotonic tensile tests were performed on specimens connected by normal and stainless high-strength bolts at different corrosion degrees. The results were used to determine the influence of corrosion on the slip coefficient, bolt pre-tension force, initial slip load, and ultimate bearing capacity, and a simplified method was developed for estimating the slip coefficient and initial slip load.

Artificial intelligence–built analysis framework for the manufacturing sector: performance optimization of wire electric discharge machining system

In the era of industry 4.0, digitalization and smart operation of industrial systems contribute to higher productivity, improved quality, and efficient resource utilization for industrial operations and processes. However, artificial intelligence (AI)–based modelling and optimization analysis following a generic analysis framework is lacking in literature for the manufacturing sector thereby impeding the inclusion of AI for its potential application's domain. Herein, a comprehensive and generic analysis framework is presented depicting the key stages involved for carrying out the AI-based modelling and optimization analysis for the manufacturing system. The suggested AI framework is put into practice on wire electric discharge machining (WEDM) system, and the cutting speed of WEDM is adjusted for the stainless cladding steel material. Artificial neural network (ANN), support vector machine (SVM), and extreme learning machine (ELM) are three AI modelling techniques that are trained with meticulous hyperparameter tuning. A better-performing model is chosen once the trained AI models have undergone the external validation test to investigate their prediction performance. The sensitivity analysis on the developed AI model is performed and it is found that pulse on time (Pon) is the noteworthy factor affecting the cutting speed of WEDM having the percentage significance value of 26.6 followed by the Dw and LTSS, with the percentage significance value of 17.3 and 16.7 respectively. The parametric optimization incorporating the AI model is conducted and the results pertain to the cutting speed are 27.3% higher than the maximum value of cutting speed achieved for WEDM. The cutting speed performance optimization is realized following the proposed AI-based analysis framework that can be applied, in general, to other manufacturing systems therefore unlocking the potential of AI to contribute to industry 4.0 for the smart operation of manufacturing systems.

Effect of Heat Treatment on Microstructure and Properties Evolution of Stainless Steel Cladding Plate.

Heat treatments are necessary sometimes in order to improve comprehensive properties of stainless steel cladding plate (SSCP). However, carbon atoms in carbon steel diffuse into stainless cladding during the heat treatment process, thus decreasing its corrosion resistance. In this paper, optical microscopy, scanning electron microscopy, and microhardness and shear testing were employed to characterize the microstructure and mechanical properties of the bonding interface in SSCP. Then, the corrosion resistance of the stainless steel cladding surface was evaluated by electrochemical tests. The results showed that the diffusion of carbon atoms played an important role in enhancing the bonding strength of SSCP, but might lead to intergranular sensitization of the cladding surface because of chromium carbide precipitation. Notably, this precipitation could be induced by quenching and tempering treatment, and hindered by solution treatment. Hence, the cladding surface on SSCP after single solution treatment possessed the superior corrosion resistance, and SSCP with continuous solution and tempering treatment exhibited the highest bonding strength.

Dynamic compressive behaviours of stainless-clad bimetallic steel under high temperatures

To study the dynamic performance of stainless-clad (SC) bimetallic steel under coupling actions of high temperature and strain rate, a total of 72 compression experiments were designed and conducted at four strain rates (0.001, 1000, 2000 and 3000 s−1) and four temperatures varying from 20 °C to 600 °C. The deformation patterns, stress versus strain responses, as well as strain rate and temperature effects were obtained and analyzed. Experimental results indicated that the dynamic compression performances of SC bimetallic steel were sensitive to both temperature and strain rate. The dynamic yield strength at 3000 s−1 was approximately 1.7 times than that under quasi-static conditions, while reduced by 24–35%, 37–50% and 52–62% when temperatures rose from 20 °C to 200 °C, 400 °C and 600 °C, respectively. Moreover, the strain rate sensitivity increased with the growing strain rate and temperature. The observation of microstructures showed that the grain dimensions declined with increase in strain rate or a decreased temperature. According to test data, a modified Johnson-Cook model was developed for predicting the stress versus strain response of the SC bimetallic steel subjected to combined actions of high strain rate and elevated temperature (20–600 °C), in which the influences of temperature softening, strain-rate strengthening and strain hardening were considered.

Low-cycle fatigue behaviour of hot-rolled titanium-clad bimetallic steel

Titanium-clad (TC) bimetallic steel is able to integrate the superior corrosion resistance of titanium alloy into traditional corrosion-susceptible structural steels, producing prominent life-cycle safety, serviceability and durability. Nevertheless, the relevant seismic performance and fatigue behaviour reported in existing literature are still limited and insufficient to support the codification for structural design of such advanced steel. In order to develop proper plastic/seismic design methodology for TC bimetallic steel structure, the cyclic behaviours and low-cycle fatigue life prediction of such metal must be thoroughly investigated. This paper aims to study the low-cycle fatigue behaviour of hot-rolled bonded TC bimetallic steel manufactured from TA2 titanium alloy and Q355B structural steel. The strain amplitude of low-cycle fatigue (LCF) test ranges from 0.5% to 2.5%, and the strain ratio applied herein includes 0 and -1. The experimental phenomenon, LCF failure mechanism, cyclic stress-strain relationship of different tests are thoroughly compared and discussed. Besides, the influence of strain rate and bond strength are simultaneously demonstrated. The LCF life are fitted and validated through Basquin-Coffin-Manson model, Kuroda model and energy method, respectively. The research outcomes demonstrate that the LCF cracks of TC bimetallic steel tend to be initiated at the cladding layer and propagated into the substrate layer due to a coupled buckling-fatigue failure mechanism. Several representative fatigue behaviour of conventional mild (CM) steels including the three-stage cyclic softening and mean stress relaxation have not been observed in this experimental study. The strain rate exhibits distinct influence on the LCF life and failure mechanism. Both Basquin-Coffin-Manson model and energy method can provide more favourable prediction accuracy for LCF life of TC bimetallic steel than the Kuroda model. Generally the LCF life of TC bimetallic steel is shorter than that of structural steels, stainless steels, titanium alloys and stainless-clad (SC) bimetallic steels. The test records and fatigue-life model parameters obtained can lay a solid foundation for seismic analysis and damage evaluation of TC bimetallic steel structure.

Anti-Corrosion Reinforcements Using Coating Technologies-A Review.

Coated reinforcements are expected to improve the performance of reinforced concrete in aggressive environments, but different kinds of coated reinforcements can express a variety of properties, which can confuse researchers and engineers. This paper reviews the manufacture, corrosion mechanisms, behaviors, and applications of popular or promising coated reinforcements, incorporating galvanized reinforcements (GRs), epoxy coated reinforcements (ECRs), stainless cladding reinforcements (SCRs), and steel-fiber reinforced polymer composite bars (SFCBs). In terms of manufacture, GRs and ECRs should focus on minimizing the negative effect of manufacture on performance, while SCRs and SFCBs should reduce the cost and increase the production capacity. Behaviors of GRs and ECRs are primarily determined by the steel substrate, but the behaviors of SCRs and SFCBs are primarily affected by the coat and core, and their interaction. The corrosion mechanism of GRs and SCRs is about oxidation, while that of SFCBs is about hydrolysis. ECRs are usually corroded under film, which can be a cause of premature failure. Corrosion embrittles SCRs, as well as bare bars, but corrosion of SFCBs usually causes a reduction in maximum strength. The investigation of the corrosion behaviors of GRs and ECRs focuses on bond strength. GRs have controversial performance. ECRs have been proven to have drawbacks regarding bond strength. The use of anti-corrosion reinforcement is uneven in regions, which may correlate with the development of technology and the economy.

Experimental cyclic behaviour and constitutive modelling of hot-rolled titanium-clad bimetallic steel

Titanium-clad (TC) bimetallic steel exhibits distinct application potential in coastal building and ocean civil and infrastructure engineering due to its promising corrosion resistance and load-bearing capacity. However, understanding on seismic performance and relevant design methodology of TC bimetallic steel structure is still limited and insufficient to support further engineering application in seismic zones. This paper is intended to clarify the experimental cyclic behaviour and suitable constitutive models of hot-rolled TC bimetallic steel. To this end, a total of 19 cyclic coupon tests are conducted on TC bimetallic steel coupons with the raw surface and polished surface. The important mechanical properties, including the hysteretic stress–strain relationship, cyclic backbones, evolutionary law with regard to the cumulative plastic strain, are thoroughly recorded and compared. The cyclic backbones are fitted through the Ramberg-Osgood model. The influences of cyclic loading protocol type on cyclic behaviour are discussed. Based upon the experimental results, material-dependent parameters of Chaboche isotropic/kinematic hardening model and Giuffre-Menegotto-Pinto constitutive model are calibrated. The fitting performances of such two constitutive models are validated through comparison between experimental results and simulation results. All simulation stress–strain relations show a favourable agreement with the experimental counterparts. The relative errors between most simulation peak stress values and experimental peak stress values are lower than 5.0%. Moreover, the cyclic behaviour of TC bimetallic steel is compared with that of mild structural steels and stainless-clad (SC) bimetallic steel. The experimental results revealed herein and constitutive models calibrated in this paper can lay a solid foundation on subsequent numerical simulation.

Local buckling behaviour of stainless-clad bimetallic steel built-up square hollow section stub columns

The local buckling behaviour and design of built-up square hollow section (SHS) stub columns made of the stainless-clad (SC) bimetallic steel is addressed in this paper by experimental and numerical investigations. A total of seven stub column specimens fabricated from hot-rolling bonded SC bimetallic steel plates with nominal thicknesses of 8 mm and 13 mm were tested and analysed.​ Precise measurements of dimensions and geometrical imperfections of the specimens were conducted with the assistance of a non-contact 3D laser scanner. The scanned data was processed by a novel approach to provide a more accurate analysis of imperfections. Finite-element (FE) models with geometric imperfections obtained from 3D-scanned data were developed and validated against the dependent test results herein and independent ones. Comprehensive parametric studies considering various clad ratios, normalized plate slendernesses and steel grades were carried out by using the verified FE models. The applicability of current codified design methods to the SC bimetallic steel SHS stub columns was evaluated through comparisons with the numerical results. A normalized slenderness limit as well as an effective width formula were proposed based on the parametric studies and the evaluation of existing design methods. With improved efficiency and consistency, the design methods proposed herein can be utilized in the future application of the SC bimetallic steel structures.

Elastic buckling of simply supported bimetallic steel plates

Bimetallic steel plate is a laminated composite one consisting of metallurgically bonded cladding and substrate layers, such as the stainless-clad (SC) or titanium-clad (TC) ones. Due to significant corrosion resistance and cost efficiency, it has gained growing recognition as an alternative to stainless steel plate and is particularly suitable for offshore and marine structures. In this paper, the nominal elastic buckling stress of a bimetallic steel plate is derived by adapting the first-order shear deformation plate theory (FSDT) and compared with the solutions of classical plate theory (CPT). The plates are simply supported and subjected to uniaxial compression; two different types of cladding configurations are considered. The transverse shear stress distributions and shear correction factors are obtained by theoretical analyses. Finite element models of the bimetallic steel plates are developed by MATLAB and ABAQUS to validate the derivation. Parametric studies are then conducted to elucidate the effects of the cladding configuration, clad ratio, elastic modulus ratio and width-to-thickness ratio on the buckling stress. Based on the theoretical analyses, a series of simplified design formulae for the critical buckling stress and design requirements for interface shear strength requirements are proposed for further engineering applications. The research works may provide important bases for understanding and investigating the buckling behaviour of the bimetallic steel structures.

Low-cycle fatigue behaviour and fracture feature of stainless-clad bimetallic steel

The stainless-clad (SC) bimetallic steel that is manufactured by metallurgically bonding stainless steels as cladding metal and conventional mild (CM) steel as substrate metal, is a kind of advanced steel with low cost, high strength and outstanding corrosion-resistant performance. Such advanced steels are especially competitive in the application of engineering structures with demands of high corrosion resistance. Unfortunately, the cyclic behaviour of the SC bimetallic steel is different from that of CM steel or stainless steel, and the research work on the SC bimetallic steels from material level to structural design level for the applications in structural engineering field is very limited. Therefore, this paper aims to investigate the low-cycle fatigue behaviour of the SC bimetallic steel made by hot roll bonding of austenitic stainless steel (S31603) and CM steel (Q355B). The test adopted a constant strain amplitude cyclic loading system with strain ratios of −1 and 0, a strain rate of 0.5%·s−1 and strain amplitudes varying from 1.00% to 2.50%. The fracture feature, cyclic characteristic, stress-strain response and the influence of surface defect and strain rate are analysed herein, and the strain-fatigue life curves are fitted and predicted by adapting the Basquin-Coffin-Manson model and Kuroda model. Research outcomes show that the introduction of cladding steel could significantly improve its ductility and low-cycle fatigue life; the fatigue life of the SC bimetallic steel is generally 30% ~ 60% higher compared with the corresponding CM steel, indicating its excellent low-cycle fatigue behaviour. The low-cycle fatigue life of the two steels could be well predicted by the strain-life relationship with adapted Basquin-Coffin-Manson model and Kuroda model, and the former is indicated superior to the latter in terms of the essential meaning and applicability.

Seismic behaviour of stainless-clad bimetallic steel welded box-section beam-columns

The stainless-clad (SC) bimetallic steel is an advanced high-performance steel with high strength and outstanding corrosion-resistant performance. It is especially competitive in the application of structures with demands of high corrosion resistance. However, the current research on SC bimetallic steels mainly focuses on the material level rather than the structural level, and it is not clear whether the excellent performance of materials can be reflected in the seismic behaviours of members. Thus, cyclic behaviours of SC bimetallic steel members need to be thoroughly investigated to fill the research gap and expand the application fields of this steel in the seismic region. To this end, this paper aims to study the cyclic behaviour of SC bimetallic steel box-section beam-columns subjected to combined constant axial load and low-cycle reciprocating lateral load through full-scale tests and finite element (FE) models. Four specimens were tested, and the influence of the width-to-thickness ratio of component plates was clarified through comparative research on the test processes, buckling details, hysteresis curves, strain curves, energy dissipation and ductility performance. Moreover, a refined FE model adopted single-layered modelling or double-layered modelling was developed respectively; and then, the model validation, the shear stress distribution at the bonding interface and parametric analyses were carried out. Research showed that the SC bimetallic steel beam-columns exhibit good energy dissipation and seismic behaviour under cyclic loadings; the smaller width-to-thickness ratio or axial load ratio could result in the plumper hysteresis curves, more sufficient energy dissipation and superior ductility performance; the ductility performance of SC bimetallic steel column was significantly improved; the ductility-based design approach proposed herein could approximately quantify the ductility performance of SC bimetallic steel box-section column, which could provide a reference for the seismic design.

Full-range stress-strain relation of stainless-clad bimetallic steel: Constitutive modelling

Stainless-clad (SC) bimetallic steel possesses promising application potential in civil and structural engineering due to a favourable combination corrosion resistance and load-bearing capacity. Nevertheless, the stress-strain models proposed in existing researches are solely suitable for limited grades of SC bimetallic steel. This paper aims to develop a simplified constitutive model applicable to various SC bimetallic steels with different clad-substrate combinations and clad ratios. To this end, the expression of two-stage stress-strain model proposed by Mirambell and Real is selected due to its popularity and recognition. The breakpoint of the two evolutionary stage is determined as the yield plateau termination point of the corresponding substrate metal. Through a thorough analysis on 156 thousands simulated stress-strain curves, the key description parameters of such stress-strain expression, including the strength and strain corresponding to the breakpoint and ultimate point, the tangent modulus and strain hardening components corresponding to two evolutionary stages, were correlated with the influencing factors including the clad ratio, strain and strength indexes of clad and substrate metals. Subsequently, the fitting performances of the proposed constitutive models were validated through existing experimental curves and numerical simulation curves. Accordingly, the different definitions of yield strength and ultimate strength of SC bimetallic steel were compared and discussed.

On the Origin of the Local Hardening Zone on Welded Stainless Clad Steel Plates

The joining of stainless clad steel plates (SCSPs) by welding processes is relatively difficult due to differences in the chemical compositions and the physical and mechanical properties between both the carbon and the stainless steels comprising the clad material. These welded structures often suffer from several structural integrity problems such as bulging phenomena that can appear after bending tests, in the welded zone, due to the presence of a local hardening zone (LHZ). The main purpose of this paper is to investigate the origin of the LHZ typically produced in the welded joint of SCSPs after the bending operation. Optical micrographs revealed the presence of a typical pearlitic-ferritic structure in the welded zone filled with E7018 metal and a dendritic δ-ferrite structure solidified under a skeletal form in the welded zone filled with ER316L metal. The microstructure of the weld metal transition zone (WMTZ) filled with ER309L metal shows the presence of martensitic laths as well as cellular and columnar structures. In addition, the WMTZ revealed the presence of three types of grain boundaries, which are formed during the gas tungsten arc welding process: solidification sub-grain boundary, solidification grain boundary, and migrated grain boundary. Vickers microhardness measurements performed along the thickness of the welded joint showed that the highest microhardness value (406 HV) was observed at the WMTZ. The significant increase of the microhardness value in this transition zone was attributed to the presence of martensitic laths as well as cellular and columnar structures.

Residual stress within stainless-clad bimetallic steel welded box sections

Stainless-clad (SC) bimetallic steel is a new high-performance steel which is composed of a substrate layer (CM steel) and a clad layer (stainless steel), and they are bonded metallurgically together. It is beneficial to both structural performance and corrosion resistance together with a high cost efficiency. This paper presents an experimental programme to investigate and model the residual stresses within SC bimetallic steel welded box sections. Eight box sections with various widths, thicknesses and clad ratios were fabricated and tested with sectioning method. A total of 494 strip specimens were obtained to quantify both magnitudes and distributions of welding-induced residual stresses within these sections. In each section, the maximum compressive stress is significantly smaller than those reported previously, while the compressive stress within the clad layer is much higher than the one within the substrate layer. A simplified model which ignores variations of magnitudes along the thicknesses was proposed. The distribution regions of this multi-stepped model are determined and the compressive residual stresses were found to be dependent on both widths and thicknesses of the sectional component plates. Moreover, deviation of the compressive residual stresses within the clad and the substrate layers was observed in this study, and it was demonstrated that this deviation depended significantly on the clad ratio of the bimetallic steel plates. A layered model was further established after considering these differences between these residual stresses within the two layers, in which the deviation of the compressive residual stresses within the clad and the substrate layers is found related to both the width-to-thickness ratio and clad ratio of the component plate. Two models proposed herein are shown to agree well with the measured residual stress distributions. Furthermore, numerical models were established to assess accuracy of these two models in simulating column buckling, and it showed that both the simplified model and the layered model were applicable to simulate column buckling behaviour.

Bond behaviour of stainless-clad bimetallic rebar in concrete

Stainless-clad (SC) bimetallic rebar combines benefits in terms of both high corrosion resistance and low cost, and therefore has great potential for usage in infrastructure engineering. In order to study the bond behaviour of the SC bimetallic rebar in concrete, a series of tests are carried out and presented herein, with various parameters such as anchorage length, diameter of stirrup and cover thickness being incorporated. Based on the test results, the failure modes, bond-slip curves, bonding strength, residual strength of bond and corresponding slippage are obtained, on which effects of the various parameters are clarified. Comparisons of the bond slip relations of the SC bimetallic rebar with that of ordinary hot-rolled conventional mild steel and stainless steel ones as well as that given in national standards are carried out. Finally, a constitutive relationship model and design suggestions for the bond between the SC bimetallic rebar and concrete are developed, which may provide valuable reference for their use in practice.