Single BCC Solid Solution Research Articles

Effects of laser energy density on the resistance to wear and cavitation erosion of FeCrNiMnAl high entropy alloy coatings by laser cladding

FeCrNiMnAl high entropy alloy (HEA) coatings are prepared on the surface of 304 stainless steel (304 SS) by laser cladding. The effects of laser energy density on the residual stress, microstructure, nanoindentation behavior, the resistance to wear, corrosion and cavitation erosion (CE) of FeCrNiMnAl HEA coatings are studied. Experimental results shows that when the laser energy density decreases from 40 J/mm2 to 24 J/mm2, the phase composition of the FeCrNiMnAl HEA coatings remains unchanged with a single BCC solid solution and the elements are uniformly distributed without obvious segregation. The average grain size of the HEA coatings is refined from 73.5 to 41.7 μm. When the laser energy density is 28 J/mm2 for S3 sample, the coating displays good forming quality and excellent comprehensive performance. The specific wear rate is only 8.2 % that of the 304 SS substrate. In addition, S3 exhibits the highest corrosion resistance as indicated by the highest corrosion potential (Ecorr) and the lowest corrosion current density (Icorr) in 3.5 wt% NaCl solution. After 10-h CE, the mean depth erosion rate (MDER) of S3 is the lowest (1.69 ± 0.03 μm/h), which is much lower than that of 304 SS (4.96 ± 0.13 μm/h), and the pure mechanical damage plays a dominant role in CE, followed by the synergistic damage effect. The excellent CE resistance of S3 is attributed to its excellent combination of corrosion resistance, mechanical properties and the self-recovery ability of passivation film.

First-principles calculations to investigate phase stability, elastic and thermodynamic properties of TiMoNbX (X=Cr, Ta, Cr and Ta) refractory high entropy alloys

This work uses first-principles calculations to investigate the phase stability, thermophysical and mechanical properties of refractory high entropy alloys (RHEAs) at finite temperatures. On the basis of plane wave quasi-potential and density functional theory, construct the structure model of a solid solution. The TiMoNbX (X = Cr, Ta, Cr and Ta) RHEAs have been determined to preserve a single body-centered cubic solid solution structure by calculations and the equilibrium lattice parameters and elastic modulus are consistent with experimental data obtained by laser cladding, which is combined with TC4 (Ti-6Al-4V) substrate. Using the quasi-harmonic Debye-Grüneisen model, the thermophysical characteristics of three RHEAs are investigated. The Voigt-Reuss-Hill scheme is used for calculating the Young's modulus (E), bulk modulus (B), shear modulus (G), and Poisson's ratio (ν), which indicates that all three RHEAs are ductile materials. Additionally, the modulus and hardness of materials decrease as temperature rises, whereas the properties of TiMoNbX RHEAs are predicted, as the nanoindentation hardness values at room temperature are comparable to, and slightly higher than the calculated values.

The influence of SRB on corrosion behavior of Cu-based medium-entropy alloy coating sprayed by HVOF

In this study, a novel Cu-based (Cu55Al20Ni12Ti8Si5, at.%) medium-entropy alloy (MEA) coating was prepared by high-velocity oxygen-fuel (HVOF) spraying technology. Thermo-Calc was employed to simulate the phase diagram of the alloy system. Phase composition and microstructure of the as-sprayed coating were characterized by means of XRD, FESEM, TEM and STEM/EDX. The effect of sulfate-reducing bacteria (SRB) on the corrosion behavior of the coating and the as-cast Ni-Al bronze (NAB) was investigated using electrochemical measurements and surface characterization. The Thermo-Cala simulation results showed that the alloy system presented a single BCC solid solution phase, while the detailed characterization of microstructure indicated that a few NiTi-rich B2-ordered precipitates could be also found in the as-sprayed coating other than the Cu-rich BCC matrix. Electrochemical studies illustrated that the coating exhibited superior corrosion resistance than the NAB in SRB medium, the corrosion acceleration efficiency induced by SRB of the NAB (95.3 %) was more severe than that of the coating (63.8 %). Surface analysis results demonstrated the occurrence of pitting corrosion and the formation of Cu2S on the coating surface after corroded in SRB medium. Corrosive metabolite HS- induced microbiologically influenced corrosion was considered as the main corrosion acceleration mechanism caused by SRB.

Ignition and energy release characteristics of energetic high-entropy alloy HfZrTiTa0.2Al0.8 under dynamic loading

Steel-like density HfZrTiTa0.2Al0.8 high entropy alloy (HEA) with a density of 7.78 g/cm3 is designed and fabricated as a novel energetic structural material (ESM). The microstructure, thermal analysis, compressive mechanical properties, ignition and energy release under dynamic loading are systemically investigated. The experimental results show that the HfZrTiTa0.2Al0.8 HEA has a single BCC solid solution structure, and spinodal decomposition with elements segregation in the nanoscale is observed. Thermal analysis shows the HEA keeps stable in the Ar atmosphere and the oxidizing reaction occurs in the Air atmosphere. The mechanical properties show brittle characteristics with maximum strength with 1520 MPa and fracture strain 0.07 and strain rate effect from 0.001s−1 to 3000s−1 is observed. Under high strain rate loading, the fracture-induced spark is observed, which is caused by an oxidizing reaction due to the rise. By direct ballistic test, the energy release velocity threshold is measured as 980 m/s, and the energy release intensity is more violent in higher velocity impact conditions. Moreover, the impact reaction degree is increased with increasing fragmentation degree and adiabatic temperature rise induced by impact. The designed HEA-ESM is a promising candidate that simultaneously possesses both high strength, high reactive heat and excellent energetic characteristics in the application field of high-strength ESM fragment.

Effect of laser remelting on high-temperature oxidation resistance of AlCoCrFeNi high-entropy alloy coating

To reveal the effect of laser remelting on the high-temperature oxidation resistance of high-entropy alloy (HEA) coating, an AlCoCrFeNi HEA coating was prepared on AISI 1045 steel by plasma spraying technology and then remelted by laser remelting process. The microstructure of the coatings before and after remelting was characterized, and oxidation experiment was carried out at 900 °C for 100 h. The results showed that, after laser remelting, the porosity of AlCoCrFeNi HEA coating decreased from 4.8 % to 0.3 %. Moreover, the phase compositions of the coating after remelting were the same as that before remelting, which were still dominated by a single BCC solid solution structure. After oxidation, the oxidation weight gain of the remelted coating was slightly greater than that of the as-sprayed coating. Nevertheless, uniform and dense multilayer oxide films were formed on the remelted coating surface, leading to the lower oxygen content in the remelted coating and at the interface of remelted coating/substrate. Therefore, laser remelting can effectively improve the ability of AlCoCrFeNi HEA coating to hinder oxygen at high temperature and prevent the substrate from oxidation.

Experimental and simulation study of microstructure and magnetic properties of (AlFeMnNi)1−x Nd x

ABSTRACT The high-entropy alloy (Al25Fe30Mn25Ni20)1−x Nd x (all in at.%) (AlFeMnNi)1−x Nd x ) was prepared by vacuum arc melting (AM) and casting method (CM). X-Ray Diffraction (XRD) and Scanning Electron Microscopy, transmission electron microscope and Integrated Energy-Dispersive X-ray spectroscopy were used to study the structure of our system. The (Al25Fe30Mn25Ni20)1−x Nd x crystallises in a Face-centred cube and centred cubic (BCC), depending on the x (x = 0.00, x = 0.01 at.% Nd). The increase of Neodymium (0.01 at.% Nd) content results in the formation of BCC structure. The chemical composition analysis of FCC and BCC crystal structures, their lattice constants demonstrate that the formation of a single BCC solid solution between 760°C and 1480°C. The Korringa–Kohn–Rostoker Method and Green's function combined with coherent potential approximation were used to study the magnetoelectronic properties of (Al25Fe30Mn25Ni20)1−x Nd x . We have obtained the value optimised of lattice parameter 2.9 Å and it is near to that obtained by experimental value using High Score programme and results XRD experimental.

Achieving excellent specific yield strength in non-equiatomic TiNbZrVMo high entropy alloy via metalloid Si doping

In this work, silicide phase was added to the single phase BCC solid solution Ti1.5NbZrV0.4Mo0.6 alloy to improve the mechanical properties. Ti1.5NbZrV0.4Mo0.6Six (x = 0-0.9, mole ratio) high entropy alloys (HEAs) was made by vacuum arc melting. The influence of Si on the microstructure, mechanical properties and fracture mechanisms of the alloy were studied. The addition of Si makes lamellar M5Si3 silicide phase grow in BCC interdendritic, and the silicides change from lamellar to coarse network. The primary BCC dendrite structure gradually changes to strip and hexagonal silicides. Si element prominently increases the yield strength and decreases the density. When x = 0.9, the alloy has yield strength of 2019.2 MPa, the elongation of 16.5% and the density of 5.91 g·cm-3, which exhibits a superb specific yield strength (SYS) up to 341.66 MPa·cm3·g-1. The improvement of mechanical properties is mainly by reason of the silicide phase strengthening. The fracture mechanism changes from quasi cleavage fracture when x = 0.1 to cleavage fracture when x = 0.3-0.7, and then to intergranular fracture when x = 0.9.

An atomistic study of the newly-developed single-phase refractory high entropy alloy of TiZrVMo: Defect accumulation and evolution under tensile deformation

For the very first time, novel refractory high entropy alloys (RHEAs) of the Ti-Zr-V-Mo system with a single bcc solid solution structure have been predicted and confirmed by molecular dynamics, resulting in twelve new compositions with a single bcc structure here. For the equiatomic RHEA of TiZrVMo specifically, the tensile deformation behavior and underlying mechanism were studied by molecular dynamic simulations. Except for the dislocation toughening and stacking fault formation, the simulation revealed that the bcc to fcc and hcp phase transformation occurred during the plastic deformation of the RHEA, which was also reversible after the tensile failure. This work provides a solid theoretical reference for the composition design and ductility understanding for the development of RHEAs in practical applications.

Microstructure, mechanical properties and corrosion resistance of high-level hard Nb-Ta-W and Nb-Ta-W-Hf multi-principal element alloy thin films

In the present work, a series of Nb-Ta-W and Nb-Ta-W-Hf refractory multi-principal element alloy thin films were fabricated by multi-target direct current magnetron co-sputtering. The ternary Nb-Ta-W thin films displayed a single BCC solid solution structure with the flake-like surface morphologies and a double-layer structure for cross sections with a columnar upper layer and an amorphous layer near the substrate. The average grain size was 16–30 nm estimated by Williamson-Hall mode and the surface roughness Ra value was 5–7 nm. These ternary thin films had excellent mechanical properties with the hardness values of 25–29 GPa and elastic modulus of 294–325 GPa. After Hf was introduced into the equiatomic NbTaW thin film, the plane view morphology of the NbTaWHf 0.6 thin film changed into a fine granular structure, but with a small amount of round particles on the surface. With the further increase of Hf content, the surfaces of the thin films kept being granular structure, but round particles disappeared on the surface of NbTaWHf film, and appeared again on the surfaces of high Hf content films with the increasing number. The cross sections of all Hf-contained thin films were smooth, dense and featureless. Meanwhile, the Ra of Nb-Ta-W-Hf thin films was significantly reduced, ranging from 0.92 to 1.47 nm. All Hf-contained thin films formed amorphous structure. The hardness of Nb-Ta-W-Hf thin films exceeded 19 GPa, and the NbTaWHf thin film had the highest hardness of 22.1 ± 1.3 GPa and elastic modulus of 239.3 ± 6.5 GPa, respectively. Due to the amorphous structure, Nb-Ta-W-Hf thin films exhibited excellent corrosion resistance. The corrosion current density was about two orders of magnitude lower than that of 304 stainless steel, and the polarization resistance was much higher than that of 304 stainless steel. • The Nb-Ta-W thin films presented a single BCC solid solution structure. • The Nb-Ta-W thin films displayed excellent mechanical properties with the hardness values of 25–29 GPa. • The Nb-Ta-W-Hf thin films formed a completely amorphous structure. • The Nb-Ta-W-Hf thin films exhibited more excellent corrosion resistance than 304 stainless steel.

A high-corrosion-resistant high-entropy alloys (HEAs) coatings with single BCC solid solution structure by laser remelting

• Preparation of FeCrCoAl x HEA coatings with BCC structure by laser remelting technique. • The FeCrCoAl 1 HEA coatings have high corrosion resistance. • Al played a critical role to improve the stability of the HEAs coatings. A high-corrosion-resistance high-entropy alloys (HEAs) coatings with single BCC solid solution structure was successfully prepared on Cr13 steel by laser remelting technology. The composition, microstructure, and corrosion properties of HEAs coatings with different Al contents were studied in detail. FeCrCoAl x HEAs coatings significantly improve the corrosion resistance of Cr13 steel, and the FeCrCoAl 1 HEAs coatings exhibits the best corrosion resistance, which were attributed to the uniform distribution of various elements in the coatings due to the higher △ S mix of HEAs and the preferentially formed uniform oxide films (mainly AlO x and CrO x ) on the coatings due to the lower △ G .

Insights on mechanical properties of dual-phase high entropy alloys via Y introduction

AlCoCrFeNi high entropy alloy (HEA) with a dual-phase A2+B2 structure has received significant research interests due to its favorable mechanical properties. In order to further optimize the mechanical properties of the dual-phase AlCoCrFeNi HEA, we design several types of (AlCoCrFeNi)100-xYx (x = 0, 0.05, 0.1, 0.5 and 1, at%) HEAs and explore the microstructure evolution as well as mechanical behaviors as a function of the Y addition. Adding Y element into the (AlCoCrFeNi)100-xYx HEAs tailors the phase composition, where Y-0.05 HEA is of the single BCC solid solution, similar to Y-0 HEA. And when Y addition is equal to or higher than 0.1 at%, (Ni, Y)-rich HCP phase is identified except for the BCC phase, coinciding with a δ-Ω phase selection model. Meanwhile, Y introduction can lighten the intragranular dendrite segregation. The volume fraction of HCP phase follows a growing trend from 0 vol% to 10.33 vol% with an increment of Y introduction, which is beneficial to enhancing the yield strength (from 1302 to 1447 MPa) and microhardness (from 517 to 597 HV). Furthermore, the fracture mechanism from a transgranular fracture mode to an intergranular fracture mode is also revealed.

Tailoring high-temperature oxidation resistance of FeCrMnVSix high entropy alloy coatings via building Si-rich dendrite microstructure

In this work, a novel FeCrMnVSix (x = 0, 0.5, 1.0, 1.5, 2.0) high entropy alloy (HEA) coatings with dendrite structure were successfully designed and prepared by laser cladding technology. The evolution law of the coatings' microstructure and high-temperature oxidation resistance behavior were systematically studied, and the influencing mechanism of Si in FeCrMnVSix HEA was proposed. Results showed that the HEA coatings were dense and uniform, exhibiting the characteristics of metallurgical bonding. And the HEA coatings had a single BCC solid solution structure. Moreover, the addition of Si aggravated the degree of lattice shrinkage and lattice distortion of HEA. Based on the non-equilibrium solidification effect of the laser cladding, the Si-rich dendritic structure was formed in the coating, which was strengthened with the increase of Si content. Additionally, the high-temperature oxidation resistance of HEA coatings was significantly improved. The Si2.0 HEA coating reduced the mass gain by about 75%, compared to the substrate. The excellent oxidation resistance was attributed to the thermodynamically preferential oxidation of Si in Si-rich dendritic structures, further forming a dense SiO2 layer on the surface of the HEA coatings.

Laser-clad Al-Ti-Zr and Cr-Ti-Zr coatings on Zr alloy: composition-induced microstructural and hardness differences

In this study, Al-Ti-Zr and Cr-Ti-Zr metallic coatings with thichness of 250-280 μm were fabricated successfully on Zr alloy using pulsed laser cladding. By jointly employing multiple characterization techniques, microstructural characteristics of the coatings were probed with their formation reasons explored. The Al-Ti-Zr coating consists of a single BCC solid-solution phase (average size 8.6 ± 6.3 μm) with hardness of 405.5 ± 16.6 HV that is more than twice that of the substrate (198.7 ± 2.0 HV). Such marked hardening is mainly related to the contribution from the solid-solution strengthening produced by Al and Ti. The Cr-Ti-Zr coating consists of cellular BCC phase (average size 0.9 ± 0.4 μm) and C14-type Cr2(Ti,Zr) Laves phase with nanoscale lamellar structures. Its average hardness is 584.8 ± 33.6 HV, about three times of that of the substrate, which can be ascribed to synergistic effects of solid-solution, grain refinement and second phase strengthening. The formation of the single BCC solid-solution phase in the Al-Ti-Zr coating is mainly due to the relatively small differences in atomic size and electronegativity between Al, Ti and Zr. For the Cr-Ti-Zr coating, however, due to large atomic size and electronegativity differences between Cr and Zr (as well as Cr and Ti), Cr2(Ti,Zr) Laves phase was formed in addition to the BCC phase.

Microstructure and elevated temperature wear behavior of laser-cladded AlCrFeMnNi high-entropy alloy coating

The AlCrFeMnNi high-entropy alloy (HEA) coatings were deposited on 316L stainless steel through laser cladding technology that employs pre-alloyed HEA powders. The microstructure, phase composition and hardness of the laser-cladded coatings prepared at different laser scanning speeds were investigated. The wear behavior and properties of the HEA coatings at different temperatures (from room temperature to 600 °C) was comprehensively evaluated using a pin-on-disc test. It was demonstrated that the laser-cladded AlCrFeMnNi HEA coatings exhibited dense and uniform microstructures consisting of a single BCC solid solution phase. A columnar-to-equiaxed transition structure feature was observed in the molten pool of the laser-cladded coating. The coatings possessed better high-temperature wear performance due to the protective effect of oxide films on the wear track. The coating at 400 °C exhibited the best wear resistance, which had the lowest friction coefficient and wear rate of 0.48 and 1.246 × 10−4 mm3/N · m, respectively. At room temperature, the main wear mechanism of the coating was abrasive wear. However, the predominant wear mechanism at high temperatures was oxidation and adhesive wear.

High temperature oxidation resistance of W-containing high entropy alloys

Tungsten containing refractory high entropy alloys (HEAs) are potential candidate for high temperature applications owing to their remarkable mechanical properties. However, the oxidation resistance of W containing HEAs at high temperatures is problematic, and it received less attention. In this work, several equiatomic W containing WTaTiCr, WMoTaTiCr, WTaAlCr, and WMoTaAlCr refectory HEAs were fabricated by arc melting technique and their oxidation behavior at 1000 °C for 10 h was compared with MoTaTiCr medium entropy alloy (MEA). The as cast microstructure of the MoTaTiCr, WTaTiCr, WMoTaTiCr, and WMoTaAlCr alloys exhibited a single BCC solid solution, while the as cast WTaAlCr MEA showed some extent of intermetallic compounds along with the BCC phase. The best oxidation resistance was obtained for MoTaTiCr MEA, which was protected by a continuous CrTaO4 scale layer. The formation of tungsten oxides (mainly WO3) prohibited the evolution of a protective oxide layer of AlTaO4, CrTaO4 or Al2O3 on the surface of W containing alloys. WMoTaAlCr HEA exhibited the best oxidation resistance among all the W containing alloys, which was protected by a nearly continuous rutile type (Al,Cr)TaO4 oxide layer.

Microstructure and mechanical properties of multi-phase reinforced Hf-Mo-Nb-Ti-Zr refractory high-entropy alloys

In this paper, Hf-Mo-Nb-Ti-Zr alloy system with single BCC solid solution phase was selected as the matrix alloy. In order to design a new high temperature structural material with excellent comprehensive properties, the multiphase reinforced refractory high entropy alloys was prepared by adding metallic elements of Al or Cr and nonmetallic elements of B, C or Si into Hf-Mo-Nb-Ti-Zr alloys at the same time. The results show that the type and content of newly formed phases are closely related to the mixing enthalpy between alloying elements and the constituent elements of the matrix alloy. This provides a valuable reference for the prediction of phase formation when adding alloying elements to improve the properties of high entropy alloys.

Microstructural evolution and corrosion behavior of CoCrFeNiAlxMn(1−x) dual-phase high-entropy alloy coatings prepared by laser cladding

CoCrFeNiAlxMn(1−x) (x = 0, 0.2, 0.4, 0.6, 0.8, 1.0) high-entropy alloy (HEA) coatings were prepared on the surface of AISI 1045 steel via laser cladding technology. The microstructural evolution and corrosion resistance of the coatings have been systematically studied. The results showed that the crystalline structure of the HEA coatings changed from a single FCC solid-solution to dual-phase of FCC+BCC solid-solution, and eventually to a single BCC solid-solution, with the gradual increase of x. The decrease in the ratio of FCC phase to BCC phase volume fraction with increasing of x indicated that Al element had a stronger effect to form BCC phase than Mn element. The corrosion resistance of CoCrFeNiAlxMn(1−x) HEA coatings was quantitatively analyzed by fitting equivalent circuit and calculating electrochemical parameters. For the dual-phase HEA coatings (x = 0.2 to 0.8), the coating had the best corrosion resistance with maximum impedance (25,016.228 Ω/cm2) and the minimum corrosion rate (0.0464 g/m2h) when x = 0.8. This was due to the fact that the passive film became stable and had stronger self-repair ability with x increasing from 0.2 to 0.8. The passive film was mainly identified as Al2O3, Co3O4, Cr2O3, Fe2O3, Fe3O4, and a small amount of Mn2O3. With the gradual increasing of x, the dominant corrosion mechanism changed from pitting corrosion to dual-phase corrosion. The mechanisms of pitting corrosion and dual-phase corrosion were analyzed in detail.

Improved tribological behavior of plasma-nitrided AlCrTiV and AlCrTiVSi high-entropy alloy films

Plasma nitriding was used to improve the tribological properties of AlCrTiV and AlCrTiVSi high-entropy alloy (HEA) films. The results indicated that after plasma nitriding, the microstructure and tribological property were improved greatly. For plasma-nitrided AlCrTiV, it is still composed of a single BCC solid solution but with a decreased lattice constant, while for plasma-nitrided AlCrTiVSi, a new V4.75Si3N0.58 nitride phase forms in the amorphous matrix, which all lead to the increase of nano-hardness, promoting the reduction of wear degree or wear rate against GCr15 and Al2O3. Due to the perfect balance of hardness and toughness, the plasma-nitrided AlCrTiV HEA film has the lowest friction coefficient (against Al2O3) and the best wear-resistance.

ZrC reinforced refractory-high-entropy-alloy coatings: compositional design, synthesis, interstitials, and microstructure evolution effects on wear, corrosion and oxidation behaviors+

A BCC-structural refractory-high-entropy-alloy (RHEA) composition of (TiZrNb)14AlMo (Al6.25Mo6.25Ti29.2Zr29.2Nb29.2, at.%) was designed by cluster-plus-glue-atom model. Its bulk and C-contained coatings were successfully achieved by arc-melting and laser-cladding techniques, respectively. The C interstitials were also introduced into RHEA coatings to investigate the effect of microstructure evolution on wear, corrosion and oxidation behaviors. The experimental results show that the bulk RHEA and its coating are composed of a single BCC solid solution. With the increasing additions of C atoms, the phase composition transforms into BCC solid solution and MC carbide plus HCP-α phase. The finer microstructure and slighter intergranular segregation render the RHEA coating with higher hardness (~431.3 HV0.2), compared with the bulk RHEA. Besides, the C interstitials effectively enhance hardness and wear resistance. While C content increasing up to 0.8 at.%, the C2 coating shows high hardness of 570.2 HV0.2 and low friction coefficient of 0.56. However, excessive C addition is deleterious to the corrosion resistance. In addition, RHEA and its C-free coating possess poor oxidation resistance mainly ascribed to the porous and much cracked oxide film. The additions of C atoms effectively improve the oxidation resistance. As for the C2 coating, the oxide gain decreases into 3.03 mg·cm−2.

Fabrication and wear behavior of TiC reinforced FeCoCrAlCu-based high entropy alloy coatings by laser surface alloying

High entropy alloy (HEA) coatings of FeCoCrAlCu reinforced by TiC were successfully fabricated on Q235 steel by laser surface alloying (LSA). The effect of various TiC content on the constituent phases, microstructure, chemical composition, and grain orientation of the HEA coatings were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), electron backscattered diffraction (EBSD), respectively. The microhardness and wear properties of the HEA coatings were investigated using micro-hardness tester and wear tester, respectively. Experimental result confirmed that with the optimized processing parameters, the FeCoCrAlCu-based HEA coatings free of pores and cracks were achieved, in addition to obtaining good metallurgical bonding between coating and substrate. The coatings were made up of a single BCC solid solution and a few TiC phases. EBSD maps of the HEA specimens exhibited anisotropy due to the complex heat flux direction during LSA process. The microhardness and the wear resistance of the FeCoCrAlCu-xTiC (x = 0, 10, 30, 50 wt%) composite coating were improved with the volume of TiC increasing from 0 wt% to 50 wt%. Especially for FeCoCrAlCu-50 wt%TiC composite coating, the microhardness, wear volume and specific wear rate were 10.78 GPa, 5.2 × 105 μm3 and 9.6 × 10−5 mm3/N m, respectively.