Materials Science and Engineering: A最新文献

{"title":"Improving mechanical properties of extruded Al-Zn-Mg-Cu alloys under secondary aging by Yb-doped microalloying","authors":"Qiuxiang Chang ,&nbsp;Yanyan Deng ,&nbsp;Lin Gu ,&nbsp;Fei Chen ,&nbsp;Quanqing Zeng","doi":"10.1016/j.msea.2025.148900","DOIUrl":"10.1016/j.msea.2025.148900","url":null,"abstract":"<div><div>To investigate the influence of ytterbium (Yb) on precipitation behavior and mechanical property evolution in AA7150 Al-Zn-Mg-Cu alloys during two-stage aging, we systematically compared Yb-modified and Yb-free alloys using transmission electron microscopy (TEM), atom probe tomography (APT), and room-temperature tensile testing. The results revealed that The addition of Yb did not significantly promote the formation of intermetallic phases in the Al-Zn-Mg-Cu alloy, but effectively induced grain refinement and suppressed recrystallization behavior during thermomechanical processing. The Yb element participates in Zn-Mg cluster formation during the first-stage aging (120 °C), promoting the generation of vacancy-rich clusters. However, the low aging temperature impedes vacancy dissolution, resulting in reduced free vacancy concentration, fewer nucleation sites, and lower precipitate number density, ultimately diminishing the mechanical performance of Yb-containing alloys at this stage. In contrast, during the second-stage aging (160 °C), elevated temperature facilitates the dissolution of Yb-associated vacancy-rich clusters, significantly increasing free vacancy concentration and accelerating atomic diffusion. This mechanism enhances precipitate number density and improves mechanical properties, with the Yb-modified alloy achieving a peak yield strength (YS) of 681 MPa at peak-aged condition. Our findings elucidate the critical role of Yb in modulating vacancy dynamics and precipitation kinetics during multi-step aging, providing insights into microstructure-property relationships in advanced age-hardenable aluminum alloys.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148900"},"PeriodicalIF":7.0,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144757661","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 La content on inclusions, grain refinement, and impact toughness in low alloy wear-resistant steel: in-situ tensile testing and EBSD orientation analysis of inclusions","authors":"Haixiang Zheng ,&nbsp;Shengchao Duan ,&nbsp;Lifeng Zhang","doi":"10.1016/j.msea.2025.148867","DOIUrl":"10.1016/j.msea.2025.148867","url":null,"abstract":"<div><div>In the current study, the effects of varying La concentrations—specifically 0, 25, 40, and 96 ppm—on the feature of inclusions, the alteration of prior austenite grain size, and the impact toughness of the low alloy wear-resistant steel were systematically investigated. As the La content in the steel increased, the impact toughness first rose and then decreased, reaching a maximum of 76.83 J cm⁻² at 40 ppm La, with an increase of 19.6 %. The improvement in impact toughness primarily depended on the beneficial effects of La on inclusions and grain refinement. Adding La reduced the quantity of large non-metallic inclusions and the proportion of multiphase inclusions, which significantly improved the impact toughness. However, at 96 ppm La, the occurrence of large-sized La-O-P-As compromised impact toughness. With the increase in La content from 0 ppm to 96 ppm, the prior austenite grain size decreased, achieving the optimal refinement effect (from 14.18 μm to 9.94 μm) at 96 ppm. This is because the number of fine-dispersed inclusions (LaAlO₃ and La₂O₂S) that could act as nucleation sites increased significantly. EBSD showed that fine prior austenite grains were only present around the La₂O₂S (100), regardless of single-phase or multiphase inclusions. This indicated that if inclusions had planes with suitable planar disregistry matching the γ-Fe, they could serve as cores for heterogeneous nucleation. However, the ability of single-phase inclusions for heterogeneous nucleation was much higher than that of multiphase inclusions. The optimal performance was observed at 40 ppm La due to the ideal balance of inclusion type, size, and prior austenite grain refinement.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148867"},"PeriodicalIF":7.0,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738010","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":"Ordered phase transformation and nanotwin formation of Cu-15Ni-8Sn-0.2Nb alloy induced by cold deformation aging to achieve ultra-high strength and good plasticity","authors":"Yanjun Zhou ,&nbsp;Wenhao Yang ,&nbsp;Shaodan Yang ,&nbsp;Ran Yang ,&nbsp;Huiwen Guo ,&nbsp;Fei Zhou ,&nbsp;Jibao Li ,&nbsp;Jidong Chen ,&nbsp;Kexing Song","doi":"10.1016/j.msea.2025.148894","DOIUrl":"10.1016/j.msea.2025.148894","url":null,"abstract":"<div><div>In this paper, the influence of cold drawing deformation (0 %, 10 % and 36 %) on the grain characteristics and mechanical properties of Cu-15Ni-8Sn-0.2Nb alloy in solid solution was studied. With the increase of cold deformation, the grains are gradually elongated along the axial direction, and the dislocation density and the number of deformation twins are increasing continuously. When 36 % cold deformation is applied, the tensile strength of Cu-15Ni-8Sn-0.2Nb alloy is 865.3 MPa, which is 49.3 % higher than that of solid solution state, and the elongation at this time is 9.9 %. On this basis, the aging precipitation behavior of Cu-15Ni-8Sn-0.2Nb alloy after 36 % cold deformation was further studied after holding at 400 °C for different times (30 min, 60 min, 120 min, 240 min, 480 min, 600 min). The evolution law of microstructure characteristics such as dislocations, precipitates and twins during cold deformation aging was proved. It is found that the cold deformation before aging promoted the growth of ordered phases of D0₂₂ and L1₂. After 36 % cold drawing deformation and aging treatment at 400 °C for 60 min, the tensile strength of Cu-15Ni-8Sn-0.2Nb alloy reaches the highest value of 1284.1 MPa and the elongation of 5.4 %. Compared with the conventional solution + aging process, the tensile strength of the alloy is increased by 24 %. The increase of dislocation density induced by cold deformation aging and the precipitation of NbNi₃ phase, as well as the coexistence of nanotwins and ordered phases, are the dominant factors to achieve ultra-high strength.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148894"},"PeriodicalIF":7.0,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749250","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":"Enhancing Charpy impact toughness by constructing metastable dual-phase structure in Fe-based medium entropy alloys","authors":"Chengfu Han ,&nbsp;Wenqiang Li ,&nbsp;Zhenyu Du ,&nbsp;Shaojie Wu ,&nbsp;Ran Wei ,&nbsp;Chen Chen ,&nbsp;Tan Wang ,&nbsp;Yongfu Cai ,&nbsp;Fushan Li","doi":"10.1016/j.msea.2025.148895","DOIUrl":"10.1016/j.msea.2025.148895","url":null,"abstract":"<div><div>Systematic investigations were performed to characterize the Charpy impact behavior of Fe-based medium-entropy alloys (Fe-MEAs) with single-phase face-centered cubic (FCC) (Fe₅₇Ni₁₈Cr₁₅Si₇Al₃) and dual-phase FCC + body-centered cubic (BCC) (Fe₆₂Ni₁₃Cr₁₅Si₇Al₃) structures in this work. The results reveal that both alloys possess a fine-grained microstructure with average grain sizes of 1.6 μm and 1.7 μm, respectively, accompanied by nanoscale precipitates and well-defined annealing twins. Notably, the dual-phase alloy exhibits excellent impact properties; specifically, it demonstrates remarkable impact toughness values of 138.3 J/cm² at 298 K and 138.8 J/cm² at 77 K, which are ∼2.1 and ∼2.6 times higher than those of the single-phase Ni18 alloy. This superior mechanical performance can be explained in terms of the synergistic strengthening contributions arising from four principal factors, i.e., microstructural refinement, dual-phase FCC + BCC crystalline structure, nanoscale precipitates, and transformation-induced plasticity (TRIP). Especially, the stress-induced phase transformation taking place during plastic deformation is predominantly localized in the notch root regions, which are subjected to triaxial stress, and it exhibits different divergent evolution patterns during crack initiation and propagation. Furthermore, the crack propagation energy accounts for over 70 % of the total absorbed energy, which demonstrates its critical role in determining the impact resistance of the alloy. These findings provide fundamental insights into how to optimize the mechanical properties of Fe-MEAs through a combination of multi-phase architecture and TRIP effects and thus offer significant guidance for the development of advanced impact-resistant materials for use in extreme environments.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148895"},"PeriodicalIF":7.0,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749245","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":"Heterogeneous microstructure fabricated by cryogenic rolling and annealing reinforced TRIP effect for superior cryogenic strength-ductility in Fe44Co36Cr10V10 HEA","authors":"Hai-long Yi,&nbsp;Hongbing Yang,&nbsp;Jiarui Fan","doi":"10.1016/j.msea.2025.148888","DOIUrl":"10.1016/j.msea.2025.148888","url":null,"abstract":"<div><div>The exceptional strength-ductility of high-entropy alloys (HEAs) achieved by phase transformation-induced plasticity (TRIP) has become a research hotspot in recent years, but their cryogenic mechanical properties still need to be improved. Here, we propose a novel strategy to significantly increase the cryogenic performance of Fe₄₄Co₃₆Cr₁₀V₁₀ high-entropy alloy. This method involves cryogenic rolling at −196 °C followed by short-term annealing at 745 °C; a bimodal grain structure and a dual-phase (FCC/BCC) heterogeneous structure within the Fe₄₄Co₃₆Cr₁₀V₁₀ high-entropy alloy were formed. This design effectively triggers a pronounced TRIP effect at −196 °C, leading to exceptional synergistic properties with a yield strength of 1476 MPa, a tensile strength of 1619 MPa, and an elongation after fracture of 54.5 %. The improvement of cryogenic properties is primarily attributed to the cooperative interaction of multiple strengthening mechanisms, including dislocation strengthening facilitated by high-density crystalline defects (such as stacking faults, twins, and Lomer–Cottrell locks), the TRIP effect, and heterogeneous strengthening arising from the interactions between coarse and fine grains. Among all these mechanisms, the TRIP effect stands out as the dominant mechanism driving performance enhancement. This study provides a new paradigm for the development of high-performance alloys for extremely cryogenic applications.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148888"},"PeriodicalIF":7.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144748568","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":"Strengthening mechanisms of nanoprecipitates at elevated temperature in secondary hardening steel","authors":"Yu Ji ,&nbsp;Chao Yang ,&nbsp;Tingting Xu ,&nbsp;Chundong Hu ,&nbsp;Han Dong","doi":"10.1016/j.msea.2025.148891","DOIUrl":"10.1016/j.msea.2025.148891","url":null,"abstract":"<div><div>This study systematically investigated the effects of tempering temperature on the microstructural evolution, carbide precipitation behavior, and high-temperature mechanical properties of a newly developed 30Cr2Ni3Mo3V secondary hardening steel using SEM, TEM, XRD, and high-temperature tensile testing. The results show that the high-temperature strength initially increased and then decreased with increasing tempering temperature. The tensile strength reached a peak value of 405 MPa at 700 °C for samples tempered at 600 °C. When the tempering temperature was raised to 700 °C, carbides significantly coarsened, and the dislocation density decreased, resulting in a tensile strength drop to 338 MPa. During high-temperature tensile testing, the dispersed precipitation of nanoscale MC carbides (3–5 nm) effectively hindered dislocation motion via the Orowan mechanism, exhibiting superior thermal stability compared to M₂₃C₆. This study revealed that the high-temperature strength of 30Cr2Ni3Mo3V steel originates from the strengthening mechanism induced by the dispersion of nanoscale MC carbides during high-temperature deformation.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148891"},"PeriodicalIF":7.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738023","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":"Laser remelting driven synergy of ordered precipitation strengthening and sub-grain structure for enhanced strength-toughness in K447A superalloy","authors":"Qi Wei,&nbsp;Shangzhe Du,&nbsp;Qi Hu,&nbsp;Pulin Nie,&nbsp;Chengwu Yao,&nbsp;Jian Huang","doi":"10.1016/j.msea.2025.148889","DOIUrl":"10.1016/j.msea.2025.148889","url":null,"abstract":"<div><div>This study investigated the laser surface remelting (LSR) of non-weldable K447A superalloy castings to repair damaged surfaces and enhance the mechanical properties of the remelted layers. The results indicated a significant improvement in hardness, room temperature, and 760 °C high-temperature tensile properties of the LSR layer. The LSR process reduced element segregation, allowing for increased solid solution of elements such as Al, Ti, and Ta. This led to an increase in the volume fraction of γ′ phase and the anti-phase boundary (APB) energy, resulting in a 37.7 % improvement in the yield strength of the LSR layer. During tensile deformation, the remelted structure more readily formed dislocation forest, causing local differences in strain hardening rates and inducing sub-grain formation. The sub-grain structure provided an additional mechanism for strain coordination, alleviating local stress concentration, thus improving toughness under 25 °C tensile conditions. At 760 °C, sub-grain boundaries underwent dynamic recrystallization driven by the combined effects of thermal activation and tensile stress, which reduced stress concentration by eliminating deformation energy, resulting in stress relaxation and thus enhancing the high-temperature tensile toughness of the LSR layer. During room temperature tensile, the interaction between dislocations and γ′ precipitates in the base material (BM) and LSR samples followed the APB strongly coupled dislocation shear mechanism. At 760 °C high-temperature tensile, the activation of more slip systems and the thermal activation of dislocations led to dislocation climb, cross-slip, Orowan bypass, and stacking fault shear mechanism, which dominated 760 °C high-temperature plastic deformation.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148889"},"PeriodicalIF":7.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724644","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 the ratio of CO2 in the shielding gas on the microstructure and mechanical properties of maraging steel fabricated by wire arc additive manufacturing","authors":"Chenyu Liu,&nbsp;Xiaoyong Zhang,&nbsp;Xiaotian Zhang,&nbsp;Zhen Wang,&nbsp;Ziyuan Chen,&nbsp;Wei Zhang,&nbsp;Qiangkun Wang,&nbsp;Pengfei Gao,&nbsp;Kehong Wang","doi":"10.1016/j.msea.2025.148883","DOIUrl":"10.1016/j.msea.2025.148883","url":null,"abstract":"<div><div>This study investigated the effect of the CO₂ ratio in shielding gas on the microstructure and mechanical properties of maraging steel fabricated by Wire Arc Additive Manufacturing. By employing mixed shielding gases with varying CO₂ proportions (100 % Ar, 95 % Ar + 5 % CO₂, and 90 % Ar + 10 % CO₂), the formation quality, thermal cycling characteristics, microstructural evolution, and mechanical performance were systematically analyzed. The results indicated that increasing the CO₂ proportion elevated the arc heat input and reduced cooling rates, leading to grain coarsening and the precipitation of Ti-Al oxides. Microstructural evolution reduced material hardness and tensile strength, but significantly enhanced ductility. Ti-Al oxides cause stress concentration while also acting as a nucleation site for promoting localized plastic deformation. The study revealed the synergistic mechanism of CO₂ through thermal decomposition-induced reactive oxygen, altered arc characteristics, and heat input modulation, providing theoretical guidance for optimizing WAAM process parameters.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148883"},"PeriodicalIF":7.0,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725041","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":"High-temperature creep response of a nickel-based single crystal superalloy with varying initial microstructures","authors":"Jiachen Xu ,&nbsp;Huanchang Duan ,&nbsp;Xinbao Zhao ,&nbsp;Yuan Cheng ,&nbsp;Hao Liu ,&nbsp;Wanshun Xia ,&nbsp;Quanzhao Yue ,&nbsp;Yuefeng Gu ,&nbsp;Yong Yuan ,&nbsp;Ze Zhang","doi":"10.1016/j.msea.2025.148881","DOIUrl":"10.1016/j.msea.2025.148881","url":null,"abstract":"<div><div>This study examines the impact of different initial microstructures on the creep behavior of nickel-based single crystal superalloys. Three alloy samples (A1, A2, A3) with varying γ′ precipitate sizes and matrix channel widths were prepared through different aging treatments and subjected to high-temperature creep tests. Results show that the A2 sample, with moderate γ′ precipitate size and narrow matrix channels, exhibited the best creep resistance, lasting the longest in the steady-state stage. In contrast, A1 and A3 samples transitioned into the tertiary stage earlier due to larger or smaller precipitates and wider channels. Dislocation behavior analysis revealed that narrower matrix channels in A2 hindered dislocation motion, promoting a stable dislocation network and reducing superdislocations during creep. Calculations of critical stress and effective lattice misfit confirmed that A2's microstructure enhanced resistance to dislocation motion and antiphase boundary shearing, contributing to its superior creep performance. Overall, the findings highlight that an optimized γ′ precipitate size and matrix channel width significantly improve creep resistance, providing insights for designing high-performance nickel-based single crystal superalloys.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148881"},"PeriodicalIF":7.0,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738022","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 mechanical properties of TiC-modified Al-Zn-Mg-Cu aluminum alloys fabricated by laser powder bed fusion","authors":"Xiaohui Liu ,&nbsp;Yunzhong Liu ,&nbsp;Shuaixing Wang ,&nbsp;Nan Du ,&nbsp;Shaofeng Yang ,&nbsp;Bangyan Zhang","doi":"10.1016/j.msea.2025.148878","DOIUrl":"10.1016/j.msea.2025.148878","url":null,"abstract":"<div><div>Promoting columnar-to-equiaxed transition (CET) of grain structures is a critical strategy for enhancing the printability and mechanical properties of high-strength aluminum alloys fabricated by laser powder bed fusion (LPBF). One effective method to achieve CET is by enhancing the heterogeneous nucleation of α-Al through the use of in-situ L1₂-Al₃Ti nucleants. Herein, TiC nanoparticles, which are stable at room temperature, are proposed as a safer and more economical alternative to traditional Ti or TiH₂ particles for triggering the formation of in-situ L1₂-Al₃Ti nucleants. The effects of TiC content on the microstructure and tensile properties of LPBF-processed Al-Zn-Mg-Cu aluminum alloys were systematically investigated. The results reveal that TiC nanoparticles effectively induce the formation of potent L1₂-Al₃Ti nucleants and prevent grain growth, facilitating CET, grain refinement, and suppressing cracking without requiring extensive modifications to LPBF processing parameters. The resulting alloys exhibit crack-free, dense, equiaxed, and fine-grained microstructures. The density of the as-built alloys reaches 99.2 %, and the average grain area decreases from 348.3 μm² to 1.7 μm² as the TiC content increases from 0 to 5 wt%. Following conventional T6 heat treatment, the tensile strengths of the LPBF-processed Al-Zn-Mg-Cu aluminum alloys modified with 2.5 wt% TiC are comparable to those of wrought Al-Zn-Mg-Cu aluminum alloys, achieving an ultimate tensile strength (UTS) of 609 MPa, a yield strength (YS) of 537 MPa, and an elongation (El) of 8.3 %, respectively. These findings highlight the potential of TiC nanoparticles as an effective agent for tailoring the microstructure and enhancing the mechanical properties of additively manufactured high-strength aluminum alloys.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"944 ","pages":"Article 148878"},"PeriodicalIF":7.0,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738021","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}