Squeeze Casting Research Articles

Tensile, flexural and fatigue response of lightweight pumice-reinforced magnesium composite: Experimentation followed by an analytical modelling

Abstract Featherweight material to sustain mountainous loads is an extreme contrast. Still, in reality, the automobile and aerospace industries seek very light materials with high specific strength to survive in global competition. This study offers a timely answer to the problems faced by those sectors. Through the use of a stir-assisted squeeze casting method, the current investigation aims to generate a lightweight magnesium composite that is reinforced with porous low-density pumice particles at weight percentages of 5, 10, and 15 per cent. An examination of the density indicates that there is a downward tendency in conjunction with the growing reinforcement. In comparison to the magnesium alloy in its natural state, the Pumice 15 coupon achieves a tensile strength increment of 47%, flexural strength increment of 35% and a 10-times increment in service cycle at fatigue increase. The micromechanics model is implemented to justify the strengthening process in terms of the adhesion between the filler matrix and the interface shear strength. The property plots that were drafted provide evidence that the suggested material is lightweight while exhibiting a significant amount of strength in tensile, flexural and fatigue. Post-fracture surface morphology analysis exhibits distinct tensile, flexural and fatigue patterns.

Corrosion and mechanical characterisation of Al/TiO2/Y2O3 hybrid nanocomposites produced by squeeze casting

ABSTRACT In this study, the corrosion and mechanical performance of hybrid aluminium matrix nanocomposites (HAMNCs) reinforced with titanium oxide (TiO2) and yttrium oxide (Y2O3) nanoparticles were investigated. A squeeze-casting process was used to develop five HAMNCs with wt.% of nanoparticles of 2.5, 5, 7.5, and 10. The corrosion resistance of HAMNCs was investigated during a 168-h salt spray test. XRD examined the crystallographic and elemental properties of the HAMNCs. FESEM was used to examine nanoparticle distribution and interaction in the matrix. The microhardness, compression strength and yield strength properties of the fabricated samples were examined. The introduction of nanoparticles at 5 wt.% TiO2 +5 wt.% Y2O3 (HAMNC6) in the Al matrix had the most outstanding properties (corrosion resistance, microhardness, compression strength, yield strength). The properties were shown to be inversely proportional with an increase in the wt.% of the nanoparticles. The SEM analysis of corroded surfaces revealed that TiO2 and Y2O3 nanoparticles were found near the grain boundaries of HAMNC6, causing small pits and minor cracks.

Achieving refined microstructures and improved mechanical properties in a cup-shaped Mg-Gd-Y-Zr alloy casting by novel near-liquidus squeeze cast process

We have recently proposed a novel process named low frequency electro-magnetic stirring assisted near-liquidus squeeze cast (NSC), which has been shown effective grain refinement effect in pure Mg and binary Mg-RE alloys. In this work, the NSC process was introduced for fabricating of a cup-shaped casting by Mg-Gd-Y-Zr alloy (VW103K). The cup-shaped VW103K alloy castings fabricated by NSC process show good surface quality and dimensional accuracy, as well as with fine microstructures and no megascopic pores and surface shrinkages. At the cross section of the cup-shaped castings, the grain size, phase compositions and hardness are nearly equally distributed. The NSC processed VW103K alloy show finer average grain size and higher yield strength than that of gravity cast, squeeze cast and rheo-squeeze cast counter parts. Pouring temperature is critical and may influence the microstructure and mechanical properties of NSC processed alloys. With the decrease of pouring temperature from ∼660 to ∼630 °C, the grain size is decreased initially and then coarsened slightly, while the distribution of eutectic phase gets worse continuously. An optimal pouring temperature range of ∼660 to ∼640 °C was obtained for fabricating of VW103K alloy. The mechanisms on formation of fine microstructures in NSC processed VW103K alloys is the combined effects influenced by applied pressure, pouring temperature and the shape of mold cavity.

Effect of active powder addition on the mechanical properties of TiCp/manganese steel matrix composites

Abstract Different active powders were incorporated into TiC particle (TiCp) preforms of TiCp/manganese steel matrix composites to enhance the TiC/steel interfacial bonding. The effect of the active powders on bending strength and toughness of the composites was investgated. The composites were fabricated using a squeeze casting infiltration method, with a TiCp volume fraction of 50%. The active powders were mixed powders of Fe and tungsten carbide (WC), Ni and WC, and Ni and Si, respectively. Energy dispersive spectrometer (EDS) and transmission electron microscopy (TEM) were employed to analyze the interfacial microstructure of the composites. The results show that the addition of WCp results in the formation of a (W, Ti)C layer around TiCps, thereby strengthening the interfacial bonding. Conversely, the addition of Fe powder leads to the presence of significant glass-phase material at the interface, which is prone to cracking. Consequently, the composite with active Ni+WC exhibits notably higher bending strength (680.3 MPa) and impact toughness (7.7 J cm−2) compared to the composite with active Fe+WC (574.3 MPa and 2.6 J cm−2), with increases of 18.5% and 196.2%, respectively. Furthermore, the composite with active Ni+Si demonstrates the highest bending strength (886.7 MPa) and good toughness (4.3 J cm−2), which are 54.4% and 65.4% higher than those of the Fe+WC active composite, respectively, and its strength is 30.3% greater than that of the Ni+WC active composite. This improvement is attributed to enhanced wettability between TiCp and the matrix.

Influence of nanodiamond on compressive and dry-sliding wear behaviors of Al2O3–Al interpenetrating-phase composites

In this research, the effects of nanodiamond (ND) addition at different loadings on the compressive and wear properties of the interpenetrating phases hybrid aluminum/alumina (Al/Al2O3) composite were investigated. The samples were fabricated in a two-step process. First, the Al2O3-ND preforms were fabricated via the replica method. Second, the squeeze casting route was employed to infiltrate the molten pure Al. The ceramic preforms were made by immersing a polyurethane foam with 17 ppi pores in a slurry containing α-Al2O3 powder (1 μm), ND particles (0–10 vol%), and natural egg white. After sintering at 1500 °C for 4 h, the preheated preforms were infiltrated with molten Al. The microstructural evaluations of the preforms and composites revealed a proper distribution of the ND particles in the preform, as well as the formation of the ND agglomerates at higher volume percentages. Also, the hardness of the samples enhanced with an increase in the ND loading, reaching a maximum of 263.8 Vickers for the 10 vol% ND-loaded composite. The compressive strength of the samples enhanced up to 3 vol% ND addition and then decreased due to the agglomeration. The wear test results indicated that the best behavior was related to the 3 vol% ND-loaded composite. Embedding the 3 vol% ND decreased the weight rate and friction coefficient of the interpenetrating phases hybrid Al/Al2O3 composite by 16 % (from 8.2396×10−3 to 6.9269×10−3 mm3/m) and 12 % (0.8165 to 0.7238), respectively. The study of the worn surfaces of the samples after wear testing revealed that the dominant wear mechanisms were abrasive and adhesive for the higher and lower volume fractions of the ND, respectively.

Tribological Behavior of Hybrid Aluminum-TiB2 Metal Matrix Composites for Brake Rotor Applications

This research investigates the feasibility of hybrid aluminum metal matrix composites (MMC) incorporating TiB2 particles for brake rotor applications. The composites were produced by incorporating both in-situ, submicron-sized TiB2 particles and regular micron-sized TiB2 powders via stir and squeeze casting techniques into a A206 aluminum alloy matrix. Systematic adjustments in the fractions of in-situ and ex-situ TiB2 particles were conducted to evaluate their impact on wear behavior and mechanisms. Combination of both particle types allowed composites with up to 10 vol% of reinforcements. Composites with higher proportions of ex-situ particles demonstrated increased wear resistance compared to those solely composed of in-situ particles, control specimens without TiB2, and conventional cast iron counterparts. The lowest wear rate for the hybrid composites sliding against phenolic brake pads was 1.1 x 10-5 mm3/Nm, signifying a 3-fold reduction relative to cast iron sliding against the same pads. Wear analysis elucidated distinctive mechanisms within the hybrid composites, characterized by mild fragmented abrasive wear, adhesive wear, and plastic deformation, accompanied by the formation of an intermixed tribo-oxide layer.

Study on the investigation of creep behaviour in squeeze cast Ca-modified AZ91 magnesium alloy

ABSTRACT The AZ91 (Mg-Al) alloy is the most commonly used Mg-cast alloy with high specific strength and excellent die-castability; however, its poor creep performance limits its applications at elevated temperatures. In the present investigation, the effect of Ca addition on the microstructure development and creep performance of squeeze-cast AZ91 alloy recognised as AZX911 alloy has been investigated at 150°C–250°C temperature under 65 and 80 MPa stress. The addition of Ca in the AZ91 alloy results in the precipitation of the thermally stable Al2Ca intermetallic phase, which partially suppresses the precipitation of the thermally unstable β-Mg17Al12 phase and significantly improves the creep resistance of the AZ91 Mg alloy. The governing creep mechanism of AZX911 alloy is found to follow power law creep with n = 3.49 at 150°C that mainly results from dislocation climb. In contrast, a transition to power-law breakdown is observed at 175°C. The resistance to creep deformation of AZX911 further improves with heat treatment at 450°C as compared to the as-cast specimen of the same alloy due to the complete dissolution of the β-Mg17Al12 phase. The activation energy of phase dissolution, estimated using the Kissinger method, is found to be higher (923 kJ/mol) for the Al2Ca intermetallic phase as compared to that for β-Mg17Al12 phase (664 kJ/mol) in AZX911 alloy.

Mechanical properties and fractography of SiC and fly ash particulates reinforced Al2024 alloy aerospace metal composites

An effort has been made to study the effect of 15-micron sized fly ash and 70 microns sized SiC particles reinforced Al2024 alloy composites in the present work. By squeeze casting method the hybrid composites with constant 3 wt.% of fly ash and 5 and 7 varying wt. percentages of SiC particulates were fabricated. The hybrid composites were analyzed for Microstructure hardness and UTS. Using SEM microstructure characteristics were carried out to find the distribution of the reinforcements in the base matrix. The hardness and UTS were enhanced with the increase in percentage of reinforcements. It is found to be slight decrease in the impact strength of hybrid composites as compared to the base alloy. Various types of fracture mechanisms were analyzed in the Al2024 alloy with SiC and fly ash particulates reinforced composites using SEM.

Effect of Cr:C ratio on open three-body wear resistance of squeeze cast high chromium cast iron

A series of high chromium white cast iron (HCCI) alloys with varying Cr:C ratios were designed and fabricated through the squeeze casting process. This study investigates the effect of the Cr:C ratio on the mechanical properties, microstructure, phase diagram, and both low-stress and high-stress abrasion performance of HCCIs. Alloys with a very high Cr:C ratio exhibited better impact toughness but poorer hardness. Scanning electron microscopy (SEM) and phase diagram calculations elucidated the influence of the Cr:C ratio on microstructure, carbide volume fraction, and carbide type. Abrasion resistance was evaluated using impact abrasive wear (high-stress) and rubber-wheel (low-stress) abrasion on quartzite in open three-body wear. Comprehensive assessments under impact abrasive wear and rubber-wheel abrasive wear conditions suggest that the alloy achieves optimal abrasion resistance with a Cr:C ratio ranging from 8 to 11. Post-wear analysis reveals that surface damage varies between high-stress and low-stress conditions. The microstructure of squeeze HCCIs is significantly influenced by the Cr:C ratio, resulting in diverse operative wear mechanisms, including micro-cutting and micro-fracture. Successful adjustment of the Cr:C ratio led to the attainment of a nearly eutectic HCCIs composition suitable for squeeze casting.

Innovation in sustainable composite research: Investigating graphene-reinforced MMCs for liquid hydrogen storage tanks in aerospace and space exploration

The demand for lightweight materials in space exploration applications has seen a significant rise. This study presents a novel approach by integrating graphene with Aluminium alloy (AA) 2900 powder, synthesized through High energy ball milling technique. The resulting powder was used to reinforce Aluminium alloy 2195, creating metal matrix composites (MMCs) via squeeze casting. The findings demonstrate that incorporating 0.5 wt % 2D graphene nanoplatelets (2D-Grnp) in AA 2195 achieved density match, enabling homogeneous dispersion, addressing composite casting challenges. Consequently, the AA 2900 alloy embedded with 2D-Grnp facilitated the homogeneous dispersion of reinforcements during the squeeze casting process, yielding MMCs Ideal for potential use in lightweight liquid hydrogen fuel tank structures for launch vehicles. Following T8 heat treatment, the final casted composite plate exhibited significant enhancements in ultimate tensile strength, with a 4.5% increase over monolithic Al 2195-T8, exhibiting nominal reduction in elongation behavior and higher hardness. Additionally, scanning and transmission electron microscopy (SEM, TEM), Small Angle Neutron Scattering (SANS) and Electron Backscatter Diffraction (EBSD) revealed the squeeze casting technique's effectiveness by exhibiting enhanced bonding among homogeneously reinforced 2D-Grnp, T1/θ’ precipitates, and AA 2195.

Studies on tribological behavior of aluminum hybrid composites strengthened with MoS2 and wheat husk ash

The current study examines the dry sliding wear characteristics of a hybrid aluminum matrix composite reinforced with wheat husk ash (WHA) and molybdenum disulfide (MoS2), produced through the squeeze casting technique. Experiments were conducted utilizing Taguchi's L27 (3)13 orthogonal array, with input parameters including applied load (20, 30, 40 N), sliding speed (1, 2, 3 m/s), reinforcement percentage (wt. 2.5, 5% and 7.5%), while wear and friction coefficient were observed as measurable responses. Analysis of variance (ANOVA) results highlighted that the reinforcement percentage had the most significant impact on the wear behavior of the hybrid composite. Notably, the (Al/5WHA/5MoS2) hybrid composite exhibited superior wear resistance (129 µm), accompanied by a 27% increase in hardness compared to the parent metal. Surface morphology analysis of worn-out specimens depicted the presence of fine grooves, delamination, and cracks.

Effect of Casting Process and Thermal Exposure on Microstructure and Mechanical Properties of Al-Si-Cu-Ni Alloy.

This paper employed squeeze-casting (SC) technology to develop a novel Al-7Si-1.5Cu-1.2Ni-0.4Mg-0.3Mn-0.15Ti heat-resistant alloy, addressing the issue of low room/high temperature elongation in traditional gravity casting (GC). Initially, the effects of SC and GC processes on the microstructure and properties of the alloy were investigated, followed by an examination of the evolution of the microstructure and properties of the SC samples over thermal exposure time. The results indicate that the SC process significantly improves the alloy's microstructure. Compared to the GC alloy, the secondary dendrite arm spacing of the as-cast SC alloy is refined from 50.5 μm to 18.5 μm. Meanwhile, the size and roundness of the eutectic Si phase in the T6-treated SC alloy are optimized from 11.7 μm and 0.75 μm to 9.5 μm and 0.85 μm, respectively, and casting defects such as porosity are reduced. Consequently, the ultimate tensile strengths (UTSs) at room temperature and at 250 °C of the SC alloy are 5% and 4.9% higher than that of GC alloy, respectively, and its elongation at both temperatures shows significant improvement. After thermal exposure at 250 °C for 120 h, the morphology of the residual second phase at the grain boundaries in the SC alloy becomes more rounded, but the eutectic Si and nano-precipitates undergo significant coarsening, resulting in a 49% decrease in UTS.

Investigation on corrosion behaviour of metal oxide nanoparticles reinforced magnesium composites by salt spray and immersion corrosion test methods

ABSTRACT This study explores the increasing utilisation of lightweight materials, particularly magnesium (Mg) alloy, in sectors such as automobile, aerospace, and marine due to its notable advantages such as high strength-to-weight ratio, good castability, and excellent damping capacity. Despite these merits, Mg alloy faces challenges, notably in wear and corrosion resistance. The research focuses on enhancing the corrosion resistance of Mg alloy by incorporating Zinc Oxide (ZnO), Manganese Oxide (MnO), and Titanium Oxide (TiO2) nanoparticles. The alloy AZ91D and three nanocomposites, namely AZ91D + 1% ZnO, AZ91D + 1% MnO, and AZ91D + 1% TiO2, were manufactured using a stir squeeze casting technique combined with an ultrasonication process. To confirm the even distribution of reinforcement particles, Optical Microscope (OM), Scanning Electron Microscope (SEM) and High-Resolution Scanning Electron Microscope (HR-SEM) were employed. X-ray Diffraction (XRD) analysis revealed the presence of matrix and reinforcement material with intermetallic precipitates around the grain boundaries. Corrosion properties were assessed following ASTM standards and utilising a 3.5% NaCl concentration. The study found that AZ91D + 1% TiO2 nanocomposites exhibited superior corrosion resistance compared to the AZ91D alloy, showing a remarkable 77.78% and 69.89% improvement in corrosion behaviour under salt spray and immersion environments, respectively, after 48 hours.

Wear behavior of Si<sub>3</sub>N<sub>4</sub> Reinforced AA2219 Metal Matrix Composites

In today’s manufacturing industries, Metal Matrix Composites (MMCs) are in high demand owing to their valuable properties like high strength-to-weight ratio and resistance against wear. This research evaluates the wear properties of AA2219 matrix composites reinforced using varying amounts (2%, 4% and 6% by weight) of Si3N4 particles, fabricated by squeeze casting. Wear performance testing of the developed Aluminium Matrix Composite (AMC) is executed by utilising pin-on-disc equipment subjected to varying conditions of load and speed. The wear rate is reported to rise with increasing normal load and sliding velocity. The study also reveals that the wear rate reduces with increasing reinforcement content.

Unveiling the novel anti-corrosion and anti-bacterial biofilm forming characteristics of eco-safe MWCNT-AZ91E alloy for food-processing surfaces

This study explores the eco-friendly modification of AZ91E alloy with MWCNT casting to enhance surfaces crucial for food processing, storage, and transportation, with a specific focus on reducing bacterial biofilm formation and preventing corrosion. Incorporating nanomaterials like MWCNT into magnesium alloys offers promising prospects for improving the surfaces of equipment and structures used in food-related industries. The advanced mechanical properties observed in MWCNT-doped alloys can lead to the development of lightweight yet durable surfaces essential for maintaining hygiene standards and ensuring food safety during processing, storage, and transportation. Employing sophisticated systematic practices such as XRD, FTIR, and Vickers hardness testing allows for comprehensive evaluation of surface modifications and mechanical enhancements. Furthermore, the demonstrated corrosion resistance of MWCNT-doped magnesium alloys is crucial for protecting surfaces from degradation caused by exposure to corrosive environments commonly encountered in food processing facilities and transportation systems. Additionally, the remarkable antibacterial properties exhibited by MWCNT-doped alloys hold promise for mitigating bacterial biofilm formation on surfaces, thereby contributing to enhanced sanitation and hygiene practices in food-related industries. KEY WORDS: Multiwalled carbon nanotube, Magnesium alloys, Anticorrosion, Squeeze casting, Antibacterial, Biofouling Bull. Chem. Soc. Ethiop. 2024, 38(6), 1897-1914. DOI: https://dx.doi.org/10.4314/bcse.v38i6.30

Study on the Effect of Pressure on the Microstructure, Mechanical Properties, and Impact Wear Behavior of Mn-Cr-Ni-Mo Alloyed Steel Fabricated by Squeeze Casting

ZG25MnCrNiMo steel samples were prepared by squeeze casting under pressure ranging from 0 to 150 MPa. The effects of pressure on the microstructure, low-temperature toughness, hardness, and impact wear performance of the prepared steels were experimentally investigated. The experimental results indicated that the samples fabricated under pressure exhibited finer grains and a significant ferrite content compared to those produced without pressure. Furthermore, the secondary dendrite arm spacing of the sample produced at 150 MPa decreased by 45.3%, and the ferrite content increased by 39.1% in comparison to the unpressurized sample. The low-temperature impact toughness of the steel at −40 °C initially increased and then decreased as the pressure varied from 0 MPa to 150 MPa. And the toughness achieved an optimal value at a pressure of 30 MPa, which was 65.4% greater than that of gravity casting (0 MPa), while the hardness decreased by only 6.17%. With a further increase in pressure, the impact work decreased linearly while the hardness increased slightly. Impact fracture analysis revealed that the fracture of the steel produced without pressure exhibited a quasi-cleavage morphology. The samples prepared by squeeze casting under 30 MPa still exhibited a large number of fine dimples even at −40 °C, indicative of ductile fracture. In addition, the impact wear performance of the steels displayed a trend of initially decreasing and subsequently increasing across the pressure range of 0–150 MPa. The wear resistance of samples prepared without pressure and at 30 MPa was superior to that at 60 MPa, and the wear resistance deteriorated when the pressure increased to 60 MPa, after which it exhibited an upward trend as the pressure continued to rise. The wear mechanisms of the samples predominantly consisted of impact wear, adhesive wear, and minimal abrasive wear, along with notable occurrences of plastic removal, furrows, and spalling.

Inhibiting Eutectic Si Macrosegregation in Squeeze Cast A356 Alloy by Symmetrical Multidirectional Pressure

The process of symmetrical multidirectional pressure was adopted to inhibit the macrosegregation of eutectic Si in squeeze cast A356 alloy. Five pressure modes were applied to study the effects of multidirectional pressure and the timing of pressure application on the macrosegregation of eutectic Si. The results show that the directional movement of the solute-rich liquid phase could be inhibited by symmetrical multidirectional pressure. Therefore, the macrosegregation of eutectic Si in the casting part was inhibited. Moreover, the timing of pressure application should be matched with the local pressure position. After the effective inhibition of the macrosegregation of eutectic Si, the elongation of the alloy was significantly improved, reaching up to 7.12%. In addition, the plastic deformation region was observed at the local pressure position. The grains in the plastic deformation region were refined. The proportion of low-angle grain boundaries in the deformed region was about 30%, which was much higher than that in the other undeformed region. The size of the Fe-containing intermetallics in the deformed region decreased to 5–10 μm, which is favorable for the mechanical properties of the alloy.

Synergistic approach to wear rate forecasting in AZ31/5% Yttria stabilized zirconia reinforced composite through response surface methodology-genetic algorithm integration

In this work, the wear behavior of a novel AZ31 magnesium alloy reinforced with 5% yttria-stabilized zirconia (YSZ) composite was evaluated using a hybrid Response Surface Methodology (RSM) and Genetic Algorithm (GA) approach. The composite was fabricated using ultrasonic-assisted stir squeeze casting technique, ensuring homogeneous distribution of spherical YSZ particles, as validated by the scanning electron microscope integrated with energy dispersive spectroscope. Wear tests were carried out according to the ASTM standards using a pin-on-disc (POD) tribometer, with applied load (AL), sliding speed (SS), and sliding distance (SD) as the main parameters. An empirical wear rate regression model was developed using RSM/Box-behnken design, and Genetic Algorithm was deployed for parametric optimization, achieving a minimal wear rate of 0.0144 g/m under a load of 30 N, sliding speed of 260 rpm, and sliding distance of 400 m. Confirmation tests were performed to validate the GA predictions. The wear mechanisms were observed, showing reduced wear in GA-optimized samples due to optimized load distribution resulting minimized ploughing, grooving and delamination. This work highlights the efficacy of the hybridized RSM / GA for the wear performance in advanced magnesium alloy matrix composites.

Effects of Impact Energy, Impact Frequency, and Test Time on Impact Wear Characteristics of Zirconia-Toughened Alumina Particles-Iron (ZTAp-Fe) Composites Using Response Surface Methodology

The study aimed to investigate the effects of wear parameters including impact energy, impact frequency, test time, and their interactions on the impact wear characteristics of high chromium white iron (HCWI) and zirconia toughened alumina (ZTA) reinforced HCWI composites fabricated by squeeze casting method using response surface methodology (RSM). The Box-Behnken Design (BBD) method was employed, and a linear model was developed to describe the relationship between wear loss and wear parameters, and to predict the wear behavior of the tested materials. The parameters of energy, frequency, and test time were found to be statistically significant, and positively influencing the wear behavior. Specifically, test time emerged as the most influential factor, followed by energy and frequency. The wear characteristics of HCWI are primarily characterized by shallower plowing and furrows, partial plastic deformation, surface spalling, and inserted abrasives. In contrast, the predominant wear mechanisms for ZTA/HCWI composites include slight breaking of ZTA particles, plowing, and cutting of the metal matrix; breaking and falling of ZTA particles; broken abrasive particles encrusted into the matrix; and the formation of spalling pits.

Effect of in-situ forging assisted squeeze casting on the forming quality and mechanical properties of automobile control arm

The squeeze casting technique offers promising prospects for a wide range of applications, as it provides an effective solution to address the challenges associated with the poor casting performance of wrought aluminum alloys. In this paper, we implemented in-situ forging assisted squeeze casting (IFSC) to form an automobile control arm using a high-strength Al–Zn–Mg–Cu alloy modified with Zr and Er. The solidification defects, microstructures, and mechanical properties of the part were investigated under different pressures and in-situ forging using various analytical techniques. With the increase of squeezing pressure from 0 MPa to 120 MPa, the ultimate tensile strength (UTS) of the sample increases from 500 MPa to 593.3 MPa, and the elongation is 4.35 %. After in-situ forging, the tensile strength of the sample is 600.9 MPa and the elongation is 5.59 %. UTS is comparable to squeeze casting, but the elongation is increased by 28.5 %. The results indicate that increasing the forming pressure enhances the surface quality of the parts and reduces the solidification defects. In addition, increasing the forming pressure not only refines the grain but also improves the grain morphology and enhances the uniformity of the structure. The squeezing pressure can enhance the contact between the alloy melt and the mold, increasing the metal's cooling rate and promoting nucleation for grain refinement. In-situ forging further facilitates liquid phase feeding, reduces alloy defects, and improves the overall mechanical properties.