Materials Science and Engineering: A最新文献

{"title":"Additive manufacturing process related mechanical performance of cobalt-chromium-molybdenum alloy: In-situ X-ray computed tomography study","authors":"Junhan Zhou ,&nbsp;Rongzheng Huang ,&nbsp;Qidong Yang ,&nbsp;Ye Zhou ,&nbsp;Meiming Xie ,&nbsp;Haiqiong Xie ,&nbsp;Xu Cai ,&nbsp;Kai Wei","doi":"10.1016/j.msea.2025.148393","DOIUrl":"10.1016/j.msea.2025.148393","url":null,"abstract":"<div><div>Laser powder bed fusion (PBF-LB) shows significant potential in additively manufacturing personalized CoCrMo alloy orthopedic implants. However, the characteristics of microstructures and defects, and especially their influence on the mechanical performance of PBF-LB processed CoCrMo alloy remain underexplored. Here, CoCrMo alloy is additively manufactured, and we first employ an in-situ X-ray computed tomography (XCT) tensile test to investigate the exclusive microstructures and defects and their influence mechanism on mechanical properties. Adequate laser energy density (<em>E</em>_v = 106.67–152.38 J/mm³) reduces defect number and increases sphericity, improving manufacturing quality, while insufficient or excessive energy input leads to LOF or keyhole defects, respectively. Besides, by first conducting the in-situ XCT tensile tests, we originally 3D visually reveal that the underlying failure mechanism is the defect growth and coalescence, which lead to the crack initiation and eventual brittle fracture. At <em>E</em>_v = 152.38 J/mm³, the alloy exhibits the best mechanical performance (tensile strength: 1193.41 MPa, elongation: 4.99 %), with fracture behavior governed by intrinsic microstructural characteristics. The PBF-LB processed CoCrMo alloy exhibits even higher ultimate strength and comparable elongation than the conventionally casted ones. Moreover, the heat treatment enables the recrystallization and precipitate formation, significantly improving the elongation of the PBF-LB processed CoCrMo alloy to 26.65 % at <em>E</em>_v = 266.67 J/mm³, achieving a marvelous balance between strength and ductility. This study fills the gap in understanding the relationship between additive manufacturing, defect formation, and mechanical performance of CoCrMo alloy, establishing a basis for efficient manufacturing and superb mechanical performance for its biomedical applications.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"935 ","pages":"Article 148393"},"PeriodicalIF":6.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Partially recrystallized 0000 microstructure enhanced strength-ductility synergy in a single phase Co35.5Ni35.5Cr10Fe10Mo9 multi-principal element alloy","authors":"Kerui Yu ,&nbsp;Honghong Su ,&nbsp;Yixi Hou ,&nbsp;Guoliang Pei ,&nbsp;Qiyu Wang ,&nbsp;Cheng Jiang ,&nbsp;Luyan Yang ,&nbsp;Dawei Pang ,&nbsp;Xiao Wei ,&nbsp;Shengcheng Mao ,&nbsp;Xiaodong Han","doi":"10.1016/j.msea.2025.148398","DOIUrl":"10.1016/j.msea.2025.148398","url":null,"abstract":"<div><div>The CoCrFeNi multi-principal element alloy (MPEA) is well known for its remarkable ductility; however, its low room-temperature strength limits its broader practical applications. In this study, a partially recrystallized heterostructure single-phase Co_35.5Ni_35.5Cr₁₀Fe₁₀Mo₉ alloy was developed. This alloy was engineered through the doping of molybdenum (Mo), an element with a larger atomic radius, in combination with a heterostructure strategy. The alloy exhibits both high yield strength (1131 MPa) and excellent ductility (23.6 %) at room temperature, showcasing a balanced enhancement of strength and ductility. Such exceptional properties of this alloy are attributed to the synergistic effects of several mechanisms, including stacking fault networks, Lomer-Cottrell dislocation locks, deformation twinning-induced plasticity, and heterogeneous deformation-induced hardening. These mechanisms work together to enhance strain-hardening during tensile deformation. This study highlights the potential of utilizing partially recrystallized heterostructures as means to optimize the mechanical properties of MPEAs.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"935 ","pages":"Article 148398"},"PeriodicalIF":6.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global 3D-gradient-structured steel sheets with superior strength-ductility combination","authors":"Yindong Shi ,&nbsp;Aojie Zhang ,&nbsp;Lina Wang ,&nbsp;Tao Liu ,&nbsp;Xiliang Zhang ,&nbsp;Xinrui Yang ,&nbsp;Zhenguo Xing ,&nbsp;Yuntian Zhu","doi":"10.1016/j.msea.2025.148383","DOIUrl":"10.1016/j.msea.2025.148383","url":null,"abstract":"<div><div>Global gradient structures (GGS) from core to surface processed by twisting have been reported to possess exceptional strength-ductility combinations. However, it is hard to apply this technique to sheet (plate) samples because of their lower axial symmetry. Here, we report a novel 3D-GGS produced in a 304 stainless steel (304ss) sheet using cyclic twisting. The 3D-GGS 304ss sheets exhibited much better strength-ductility combinations than GGS 304ss rods due to their more pronounced heterostructural effects. During the tensile testing, a unique transformation-induced plasticity (TRIP) effect was activated in which reverse martensitic transformation (<em>α′ → γ</em>) was first activated, then transited to forward martensitic transformation (<em>γ → α′</em>) after some strain. Both the reverse and forward TRIP effects contributed to higher ductility. In addition, the 3D-structures also produced hetero-deformation induced (HDI) work hardening to retain ductility. This work developed a practical approach to constructing 3D-GGS to enhance integrated performances of metal sheets and components without changing their geometries.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"935 ","pages":"Article 148383"},"PeriodicalIF":6.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanisms of synergistically enhanced strength and plasticity in 316L stainless steel fabricated by laser powder bed fusion via cold rolling and annealing treatments","authors":"Yuanjian Hong ,&nbsp;Guotao Yin ,&nbsp;Yuanyuan Zheng ,&nbsp;Wei Zhang ,&nbsp;Zhonghua Wei","doi":"10.1016/j.msea.2025.148364","DOIUrl":"10.1016/j.msea.2025.148364","url":null,"abstract":"<div><div>The effect of the cross-scale interfaces on the strengthening mechanism of laser powder bed fusion processed (L-PBFed) 316L stainless steel was investigated by nanoindentation, rolling-annealed and tensile test. The cellular sub-grain with high density dislocations and element segregation supressed dislocation nucleation and move, acting as grain boundary during deformation. The cellular sub-grain showed high stability despite of rolling and annealed. Rolling-annealing induced a bimodal grain size distribution in additively manufactured stainless steel. This strategy retained the grain boundary strengthening effect from cellular boundaries while introducing high-density dislocations to elevate yield strength. Concurrently, localized recrystallized grains modulated strain distribution, enabling more uniform deformation and promoting widespread deformation twin formation, thereby enhancing plasticity. These findings demonstrate that optimizing grain size while preserving cellular structure strengthening offers a viable pathway to improve the comprehensive mechanical properties of materials.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"935 ","pages":"Article 148364"},"PeriodicalIF":6.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deformation mechanisms and remarkable strain hardening in a lightweight high-temperature eutectic high-entropy alloy","authors":"Caiying Chen ,&nbsp;Li Jiang ,&nbsp;Wenna Jiao ,&nbsp;Yanhui Li ,&nbsp;Aohan Zhang ,&nbsp;Zhibin Zhu ,&nbsp;Haohao Deng ,&nbsp;Wei Zhang","doi":"10.1016/j.msea.2025.148387","DOIUrl":"10.1016/j.msea.2025.148387","url":null,"abstract":"<div><div>The utilization of lightweight high entropy alloys (LWHEAs) in aerospace materials hold significant potential. However, addressing the urgent challenge of enhancing mechanical properties such as specific strength and compressive strain equilibrium at room temperature and high temperature remains a crucial problem in developing new, cost-effective structural materials. In this work, Al_1.0CrVNi_<em>x</em> (<em>x</em> = 1.3, 1.5, 1.7, 2.0 and 2.5) and Al_<em>y</em>CrVNi_1.5 (<em>y</em> = 0.75, 1.25, 1.3, 1.37 and 1.5) LWHEA systems with low densities of 5.6–6.6 g cm⁻³, have been proposed. Two eutectic LWHEAs with B2/BCC and L2₁/BCC structures are obtained in Al_1.0CrVNi_1.7 and Al_1.37CrVNi_1.5, respectively. The alloys show excellent specific yield strengths of 311 and 277 MPa (g cm⁻³)⁻¹, respectively (typically ∼ 220 MPa (g cm⁻³)⁻¹ in conventional Ti- and Ni-based alloys at room temperature), and hardness of 648 and 568 HV, respectively (typically ∼ 480 HV in conventional Ti- and Ni-based alloys), while keeping the compressive strain over 30 %. Furthermore, Al_1.37CrVNi_1.5 and Al_1.5CrVNi_1.5 LWHEAs possess excellent mechanical properties at high temperature, whose specific yield strengths are as high as 177 and 161 MPa (g cm⁻³)⁻¹ respectively at 800 °C, far exceeding those currently reported LWHEAs. The alloys exhibit significant strain hardening capability, resulting from the interaction between ordered and disordered phases with semi-coherent interfaces, along with the presence of coherent nano-precipitates dispersed throughout the eutectic phases.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"936 ","pages":"Article 148387"},"PeriodicalIF":6.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasonic fatigue performance of the shot-peened TC4 titanium Alloy: Improved or deteriorated?","authors":"Qiang Wang ,&nbsp;Tianyi Hu ,&nbsp;Yuping Ren ,&nbsp;Panfeng Xu ,&nbsp;Yingjie Wu ,&nbsp;Xin Zhi ,&nbsp;Junliang Lin ,&nbsp;Gaowu Qin","doi":"10.1016/j.msea.2025.148391","DOIUrl":"10.1016/j.msea.2025.148391","url":null,"abstract":"<div><div>The mechanism behind the fatigue life improvement or deterioration of the shot peened TC4 titanium alloy rod used as ultrasonic scalpel is a valuable scientific issue. In this paper, the ultrasonic fatigue property of the shot peened TC4 titanium alloy rod specimen was investigated based on microstructure characterization, mechanical tests and ultrasonic fatigue tests. The experimental results show that obvious grain refinement can be observed in the topmost surface layer of the shot peened TC4 titanium alloy rod specimens. Moreover, a large number of crater defects left on the surface of specimens leading to the increase of surface roughness. A maximum residual compressive stress of approximately 450 MPa was introduced into the surface layer of the specimens. The microhardness distribution is very discrete at the same depth, and thus the contribution of microhardness enhancement to suppressing fatigue crack initiation is limited. Surprisingly, the fatigue lives of the shot peened TC4 titanium alloy rod specimens are slightly deteriorated as compared with that of the un-shot peened specimens. The fatigue risk factor model was used to evaluate the difficulty of fatigue crack initiation. By the calculation, the fatigue risks of the shot peened TC4 titanium alloy rod specimens are generally higher than that of the un-shot peened specimens under the same stress amplitude, which can be mainly attributed to the effect of the competition between the beneficial effects, i.e., the introduction of residual compressive stress, and the harmful effects, i.e., stress concentration caused by crater defects, on the initiation of fatigue cracks.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"935 ","pages":"Article 148391"},"PeriodicalIF":6.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atomic-level study of twinning behaviors in metastable hexagonal high-entropy alloys","authors":"Bo Li ,&nbsp;Kaisheng Ming ,&nbsp;Yuchen Zhang ,&nbsp;Nan Zi ,&nbsp;Wenqian Wu ,&nbsp;Jian Wang","doi":"10.1016/j.msea.2025.148358","DOIUrl":"10.1016/j.msea.2025.148358","url":null,"abstract":"<div><div>High-entropy alloy (HEAs) with a hexagonal close-packed (hcp) structure can be generated from the high-entropy face-centered cubic (fcc) matrix phase through martensitic transformation (MT) as deformed at low temperatures. {10 <span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 1} deformation twinning (DT) was widely observed in these deformation-induced hcp HEAs. Corresponding to local heating by plastic work, the deformation-induced hcp phase is generally metastable during plastic deformation. The metastability of the hcp phase facilitates the formation of high-density basal stacking faults (BSFs) and two types of fcc nano-bands with a {111} twinning relationship, significantly influencing {10<span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 1} twin propagation and thickening. Using high-resolution transmission electron microscopy (HRTEM) and molecular dynamics (MD) simulations, we systematically investigated the behaviors of {10<span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 1} DT and its interactions with BSFs and fcc nano-bands associated with reversible martensitic transformation (RMT) in the deformation-induced hcp phase. The dynamically coupled deformation mechanisms of RMT (fcc ↔ hcp) and {111} DT generate complex structural evolutions within {10 <span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 1} twins, where kinematic paths of RMT are influenced by twin boundaries. Interactions between {10<span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 1} twin and fcc nano-bands are categorized into “non-crossing” and “apparent crossing” mechanisms, depending on their crystallographic orientations. HRTEM characterizations and MD simulations reveal that {10 <span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 1} twin transmission through fcc nano-bands with low misorientation angles is facilitated by indirect slip transmission via re-nucleation of {10<span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 1} twinning dislocations from the hcp/fcc phase boundaries. These findings provide an in-depth understanding of the deformation mechanisms in metastable hcp HEAs, highlighting the role of dynamically coupled DT and RMT mechanisms in governing microstructural evolutions during plastic deformation.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"935 ","pages":"Article 148358"},"PeriodicalIF":6.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Nb element on the solidification microstructures and high-temperature tensile properties of nickel-based eutectic composite","authors":"Jiawei Pei ,&nbsp;Dongwei Yang ,&nbsp;Min Yang,&nbsp;Tingting Cui,&nbsp;Min Guo,&nbsp;Haijun Su,&nbsp;Lin Liu","doi":"10.1016/j.msea.2025.148381","DOIUrl":"10.1016/j.msea.2025.148381","url":null,"abstract":"<div><div>Nickel-based eutectic composite is considered a promising high-temperature structural material due to its intrinsic stability of the eutectic microstructure at elevated temperatures and its composite reinforcement of strength by carbide fibers and γ′ precipitations. To optimize the microstructure and enhance the mechanical properties of nickel-based eutectic composite, the effect of Nb, a key element promoting the formation of NbC fibers and γ′ phase, is investigated on solidification microstructure and tensile properties. The 3D reconstruction by X-ray imager indicates that NbC fibers are the branch arms growing from the top corners of NbC blocks and continuous in 3D space. The NbC fibers and γ/γ′ phases have an orientation relationship of [100]_γ/γ′||[100]_NbC and (002)_γ/γ′||(002)_NbC. As the Nb content increases from 3 to 5.6 wt%, the stability of planar interface growth during directional solidification decreases, resulting in the formation of long strip-shaped NbC fibers in the composites with 3 and 4.3 wt% Nb, and skeleton-like NbC in the composite with 5.6 wt% Nb. The volume fraction of NbC fibers and γ′ phase respectively decreases and increases with increasing Nb content, due to compositional re-distribution induced by varying Nb content. The composite with 3 wt% Nb exhibits the best tensile properties at 900 °C, mainly attributed to its good microstructures consisting of Nb fibers with high volume fraction and slender transverse area and γ′ precipitates with small size. Additionally, the fracture morphologies and fracture mechanism are discussed. These findings provide valuable insights for the composition design and performance optimization of nickel-based eutectic composites.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"935 ","pages":"Article 148381"},"PeriodicalIF":6.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-situ investigation of a heat-treated AlSi7Cu3Mg cast alloy: influence of solidification rate on the cyclic fatigue behaviour","authors":"Davide Maghini ,&nbsp;Toni Bogdanoff ,&nbsp;Annalisa Fortini ,&nbsp;Mattia Merlin","doi":"10.1016/j.msea.2025.148370","DOIUrl":"10.1016/j.msea.2025.148370","url":null,"abstract":"<div><div>The study investigates the influence of the solidification rate on both crack initiation and propagation on a heat-treated AlSi7Cu3Mg cast alloy under cyclic loading conditions. Three different cooling speeds were applied to the alloy in a Bridgman furnace to enhance controlled fine to coarse microstructures, and the same post-solidification heat treatment parameters were adopted. Optical microscopy, scanning electron microscopy and energy dispersive x-ray analyses were performed for the microstructural characterisation, which also concerned quantitative analyses on Si particles to deepen the effect of the solidification rates on their geometrical features. In-situ fatigue tests in a scanning electron microscope and electron backscattered diffraction analyses were carried out to study the two-dimensional fatigue behaviour of the alloy depending on the coarseness of the microstructural features. Focused ion beam slices and three-dimensional tomography were performed ahead of the crack tips, revealing micro-cracks closer to the intermetallic particles with the decreasing of the microstructural coarseness. EBSD analyses also supported results correlating the effect of different solidification rates on the transgranular/intergranular propagation paths. In contrast, tensile and microhardness tests were also conducted to better understand the mechanical properties of the alloy. The results showed that the solidification rate and the heat treatment have a synergic effect in controlling the fatigue crack initiation and the subsequent propagation path. Specifically, higher solidification rates lead to a finer microstructure with smaller, rounder Si particles, increased hardness of the α-Al matrix, and concentrated fatigue crack initiation and propagation in eutectic areas. This contrasts with lower solidification rates, where cracks are more likely to initiate and propagate in the softer α-Al matrix or near larger Si and intermetallic particles.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"936 ","pages":"Article 148370"},"PeriodicalIF":6.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure and properties evolution, toughening mechanism of 10 % SiC/6063 composite fabricated by strip casting: Experiment and simulation","authors":"Jianbin Wang,&nbsp;Yuanxiang Zhang,&nbsp;Jingda Liu,&nbsp;Lei Chen,&nbsp;Yang Wang,&nbsp;Feng Fang,&nbsp;Guodong Wang","doi":"10.1016/j.msea.2025.148390","DOIUrl":"10.1016/j.msea.2025.148390","url":null,"abstract":"<div><div>The 10 % SiC/6063 composite was prepared by strip casting technology for the first time. The microstructure evolution and toughening mechanism before and after cold rolling were investigated by experimental and finite element methods. The hardness and strength of the composite cast strip were higher than that of 6063 aluminium alloy due to grain refinement and dislocation obstruction of SiC particles. After cold rolling, the strength of the composite material increased by 33 MPa, with a substantial 240.2 % increase in elongation from 9.7 ± 3 % to 33 ± 5 %. The significant increase in elongation is mainly attributed to the high proportion of &lt;111&gt;//RD {Cubic} texture (48.5 %) of the densely packed surface providing favourable conditions for dislocation slip, allowing the material to coordinate deformation through dislocation motion. The simulation and KAM results confirm that there is stress concentration around the SiC particles, which can share the stress and hinder the crack propagation. This corresponds to the low angle grain boundary of the composite material after cold rolling up to 97.7 %. Different from 6063 alloy, the recrystallisation volume of composite materials fraction increased to 5.15 % and possessed uniform continuous recrystallisation characteristics to uniformly disperse the stress. This makes the composite material structure more uniform, reduces local stress, and improves comprehensive mechanical properties.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"936 ","pages":"Article 148390"},"PeriodicalIF":6.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}