An Yang , Cheng Wang , Hong Ning , Xin-Yu Xu , Yipeng Gao , Zhangting Hu , Lu Xu , Shunbo Wang , Xianke Li , Hui-Yuan Wang
{"title":"Heterostructure control enabling outstanding strength-crack tolerance synergy in a dilute Mg-Al-Mn-Zn-Ce-Nd alloy","authors":"An Yang , Cheng Wang , Hong Ning , Xin-Yu Xu , Yipeng Gao , Zhangting Hu , Lu Xu , Shunbo Wang , Xianke Li , Hui-Yuan Wang","doi":"10.1016/j.jma.2025.06.004","DOIUrl":"10.1016/j.jma.2025.06.004","url":null,"abstract":"<div><div>There exists a severe strength-crack tolerance trade-off in dilute magnesium (Mg) alloys. Herein, a heterogeneous Mg-0.6Al-0.6Mn-0.5Zn-0.2Ce-0.2Nd (A200-10) alloy with a high density of dislocations was obtained through low-temperature extrusion and short-term annealing. The microstructure consists of recrystallized (RXed) and unrecrystallized (unRXed) regions, with a precisely controlled volume fraction ratio of 3:1. The heterogeneous A200-10 alloy exhibits a high tensile yield strength (TYS) of ∼306 MPa and a superior tensile elongation (TEL) of ∼18.4%. Based on <em>quasi-in-situ</em> electron backscattered diffraction (EBSD) and scanning electron microscope (SEM)-digital image correlation (DIC) analysis, we find that plastic deformation occurs preferentially in the RXed regions, mediated by the mobile <<em>a</em>> dislocations. As strain increases, strain gradient gradually accumulates at the interface between RXed and unRXed regions, generating hetero-deformation induced (HDI) strengthening and hardening. Besides, there is significant intergranular slip transfer in RXed regions, which can coordinate partial strain incompatibility. Furthermore, heterogeneous interfaces play a crucial role in enhancing crack tolerance. The heterogeneous interface functions as a bridging ligament to withstand stresses, and activates non-basal slips in the unRXed grains near the crack tip. Such activation of extra dislocations not only alleviates stress concentration but also dissipates the energy essential for microcrack propagation, thus effectively blunting the crack tip. Accordingly, the heterogeneous A200-10 alloy obtains an excellent strength and elongation combination. This work is anticipated to provide a valuable avenue for the development of Mg alloys with outstanding performance by regulating the appropriate heterostructure.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 8","pages":"Pages 4045-4060"},"PeriodicalIF":13.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144565881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Formation mechanism of cluster-arranged layers in Mg-Y-Zn alloy: A density functional theory study","authors":"Ryosuke Matsumoto, Naoki Uemura","doi":"10.1016/j.jma.2025.07.013","DOIUrl":"10.1016/j.jma.2025.07.013","url":null,"abstract":"<div><div>A sparsely introduced basal intrinsic 2-type stacking fault (I<sub>2</sub>-SF) with a dense segregation of clusters (cluster-arranged layer; CAL) in α-Mg exerts a sufficient strengthening effect with a reduced content of additive elements. Moreover, the dynamic nucleation and growth of CALs during deformation largely improves the creep resistance. This paper analyzes the cosegregation behaviors of yttrium (Y) and zinc (Zn) atoms at an I<sub>2</sub>-SF in bulk and at basal edge dislocations using density functional theory calculations. We also study the modification of the generalized stacking-fault energy (GSFE) curves associated with the cosegregation. The segregation energies of Y and Zn atoms in the I<sub>2</sub>-SF are relatively small during the initial segregation of a cluster, but increases stepwise as the cluster grows. After introducing Y and Zn atoms in the I<sub>2</sub>-SF in an energetically stable order, we obtain an L1<sub>2</sub>-type cluster resembling that reported in the literature. Small structural changes driven by vacancy diffusion produce an exact L1<sub>2</sub>-type cluster. Meanwhile, the core of the Shockley partial dislocation generates sufficient segregation energy for cluster nucleation. Migration of the Shockley partial dislocation and expansion of the I<sub>2</sub>-SF part are observed at a specific cluster size. The migration is triggered by a large modification of the GSFE curve and destabilization of the hexagonal close-packed stacking (hcp) by the segregated atoms. At this point, the cluster has reached sufficient size and continues to follow the growth in the I<sub>2</sub>-SF part. According to our findings, the CAL at elevated temperature is formed through repeated synchronized behavior of cluster nucleation at the Shockley partial dislocation, dislocation migration triggered by the destabilized hcp stacking, and following of cluster growth in the I<sub>2</sub>-SF part of the dislocation.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 8","pages":"Pages 3702-3712"},"PeriodicalIF":13.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144819420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhiqi Zhu , Irfan Ayoub , Jie He , Jingran Yang , HanDong Zhang , Zhiqin Zhu , Qi Hao , Ziming Cai , Oluwafunmilola Ola , Santosh K. Tiwari
{"title":"Magnesium alloys with rare-earth elements: Research trends applications, and future prospect","authors":"Zhiqi Zhu , Irfan Ayoub , Jie He , Jingran Yang , HanDong Zhang , Zhiqin Zhu , Qi Hao , Ziming Cai , Oluwafunmilola Ola , Santosh K. Tiwari","doi":"10.1016/j.jma.2025.07.012","DOIUrl":"10.1016/j.jma.2025.07.012","url":null,"abstract":"<div><div>Magnesium alloys have emerged as promising light weight materials due to their low density, high specific strength, excellent machinability, and superior damping capacity, making them ideal for aerospace, automotive, and electronics applications. However, broader use of magnesium alloys is limited by poor thermo-mechanical performance, corrosion susceptibility, and low formability at room temperature. The addition of rare-earth elements such as gadolinium, yttrium, and neodymium has meaningfully improved these limitations, enhancing the overall performance of magnesium alloys. This review highlights recent advancements in rare-earth magnesium alloys, focusing on their improved thermo-mechanical properties, microstructural evolution, crystallization behavior, and texture development. Herein, strengthening mechanisms associated with rare-earth additions are discussed in detail. Furthermore, the article explores growing relevance of these alloys in advanced applications, including biomedical implants, IoT devices, aerospace structures, defense systems, and general engineering. With their enhanced mechanical and functional properties, rare-earth magnesium alloys represent a new generation of high-performance, functional materials poised to drive innovation across multiple technology sectors.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 8","pages":"Pages 3524-3563"},"PeriodicalIF":13.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144899389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
X.Z. Jin , G.J. Yang , Xinyu Xu , D.B. Shan , B. Guo , B.B. He , C. Fan , W.C. Xu
{"title":"On the origin of non-basal texture in extruded Mg-RE alloys and its implication for texture engineering","authors":"X.Z. Jin , G.J. Yang , Xinyu Xu , D.B. Shan , B. Guo , B.B. He , C. Fan , W.C. Xu","doi":"10.1016/j.jma.2024.10.004","DOIUrl":"10.1016/j.jma.2024.10.004","url":null,"abstract":"<div><div>The work aims to investigate the formation and transformation mechanism of non-basal texture in the extruded Mg alloys. With this purpose a pure Mg as reference and eight Mg-Gd binary alloys with the Gd concentration ranging from 0.5 wt.% to 18 wt.% were prepared for extrusion. This study shows that the basal fiber texture in pure Mg transited into RE (rare earth) texture in diluted Mg-Gd alloys and into the abnormal C-texture in high-concentration Mg-Gd alloys. In pure Mg, discontinuous dynamic recrystallization plays a predominant role during the extrusion process, resulting in the formation of a typical basal fiber texture. Alloying with high concentration of Gd impedes the dynamic recrystallization process, facilitating the heterogeneous nucleation of shear bands as well as the dynamic recrystallization within shear bands. Dynamic recrystallized grains within shear bands nucleate with a similar orientation to the host deformed parent grains and gradually tilt their c-axis to the extrusion direction during growth by absorbing dislocations, leading to the formation of either the RE-texture orientation or the C-texture orientation, depending on the stored energy within shear bands. The analysis aided by IGMA and TEM characterization reveals that the shear bands originate from the extensive but heterogeneous activation of pyramidal I slip. Tensile tests illustrate a close correlation between the fracture elongation and texture types. A comprehensive understanding of the formation and transformation mechanism of different texture components in Mg alloys holds significant importance for the design of high-performance Mg alloys by texture engineering.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 8","pages":"Pages 3642-3658"},"PeriodicalIF":13.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chenchen Zhao , Zhiquan Huang , Haoran Zhang , Peng Li , Tao Wang , Qingxue Huang
{"title":"Research on edge defects suppression of Mg/Al composite plate rolling: Development of embedded rolling technology","authors":"Chenchen Zhao , Zhiquan Huang , Haoran Zhang , Peng Li , Tao Wang , Qingxue Huang","doi":"10.1016/j.jma.2024.11.024","DOIUrl":"10.1016/j.jma.2024.11.024","url":null,"abstract":"<div><div>Edge defects significantly impact the forming quality of Mg/Al composite plates during the rolling process. This study aims to develop an effective rolling technique to suppress these defects. First, an enhanced Lemaitre damage model with a generalized stress state damage prediction mechanism was used to evaluate the key mechanical factors contributing to defect formation. Based on this evaluation, an embedded composite rolling technique was proposed. Subsequently, comparative validation was conducted at 350 °C with a 50% reduction ratio. Results showed that the plates rolled using the embedded composite rolling technique had smooth surfaces and edges, with no macroscopic cracks observed. Numerical simulation indicated that, compared to conventional processes, the proposed technique reduced the maximum edge stress triaxiality of the plates from −0.02 to −1.56, significantly enhancing the triaxial compressive stress effect at the edges, which suppressed void nucleation and growth, leading to a 96% reduction in damage values. Mechanical property evaluations demonstrated that, compared to the conventional rolling process, the proposed technique improved edge bonding strength and tensile strength by approximately 67.7% and 118%, respectively. Further microstructural characterization revealed that the proposed technique, influenced by the restriction of deformation along the transverse direction (TD), weakened the plastic flow in the TD and enhanced plastic flow along the rolling direction (RD), resulting in higher grain boundary density and stronger basal texture. This, in turn, improved the toughness and transverse homogeneity of the plates. In summary, the embedded composite rolling technique provides crucial technical guidance for the preparation of Mg-based composite plates.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 8","pages":"Pages 3751-3767"},"PeriodicalIF":13.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142804501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of Yb element on microstructure and mechanical properties of high-strength Mg-Sm-Gd(-Yb)-Zr extruded alloys","authors":"Nana Zhang , Xiaoya Chen , Quanan Li , Zeyu Zheng , Zheng Wu , Jiaqi Xie","doi":"10.1016/j.jma.2025.02.006","DOIUrl":"10.1016/j.jma.2025.02.006","url":null,"abstract":"<div><div>A high-strength magnesium alloy containing Yb was prepared through a simple hot extrusion process. The effect of Yb addition on dynamic precipitation, texture evolution, dynamic recrystallization mechanisms, deformation mechanisms, and strengthening mechanisms in as-extruded Mg-4Sm-3Gd(-2Yb)-0.5Zr (SGY0, SGY2) alloys was systematically investigated. The results indicated that the average grain size decreased from 4.17 µm to 1.48 µm with the addition of Yb. This extreme grain refinement greatly enhances the strength. The addition of Yb significantly facilitated the phase precipitation, but did not change the texture type. The non-dynamic recrystallized (unDRXed) grains exhibited a strong basal plane texture of <01<span><math><mover><mn>1</mn><mo>¯</mo></mover></math></span>0> parallel to the extrusion direction (ED), while the dynamic recrystallized (DRXed) grains showed a weaker rare earth texture, characterized by <<span><math><mrow><mover><mrow><mn>1</mn></mrow><mo>‾</mo></mover><mn>2</mn><mover><mrow><mn>1</mn></mrow><mo>‾</mo></mover><mn>2</mn></mrow></math></span>> // ED. Moreover, the as-extruded SGY0 and SGY2 alloys predominantly undergo continuous dynamic recrystallization (CDRX), and some DRXed grains exhibit a discontinuous dynamic recrystallization mechanism (DDRX). In addition, the addition of Yb facilitates the activation of non-basal plane slip. The dislocation types in the as-extruded SGY0 and SGY2 alloys include 〈a〉, 〈c〉 and 〈c + a〉 dislocations. However, the SGY2 alloy exhibits a relatively high dislocation density, which contributes to the enhancement of the strength. Extreme grain refinement and the dispersion of nanoscale second-phase particles are key factors in increasing the strength.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 8","pages":"Pages 3931-3946"},"PeriodicalIF":13.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research progress on magnesium materials for structural, biomedical and energy applications","authors":"Yuanding Huang, Domonkos Tolnai, Norbert Hort","doi":"10.1016/j.jma.2025.07.014","DOIUrl":"10.1016/j.jma.2025.07.014","url":null,"abstract":"","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 8","pages":"Pages 3487-3489"},"PeriodicalIF":13.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shusheng Cao, Yinghui Li, Bolun Wang, Wentao Rao, Yanyue Wang, Hao Du, Dong Wang, Jiaqi Zhang, Xi Lin, Jianxin Zou
{"title":"Low temperature thermolysis and hydrolysis of MgH2 generated from a titanium-mediated hydrogenation of Mg2Si","authors":"Shusheng Cao, Yinghui Li, Bolun Wang, Wentao Rao, Yanyue Wang, Hao Du, Dong Wang, Jiaqi Zhang, Xi Lin, Jianxin Zou","doi":"10.1016/j.jma.2025.07.002","DOIUrl":"https://doi.org/10.1016/j.jma.2025.07.002","url":null,"abstract":"The magnesium-silicon hydrogen storage system (Mg<sub>2</sub>Si+H<sub>2</sub>↔MgH<sub>2</sub>+Si) has attracted considerable attention with the potential of achieving near-room temperature hydrogen sorption since the reaction enthalpy is only ∼36.8 kJ/mol H<sub>2</sub>, offering much better thermodynamic properties over MgH<sub>2</sub>. However, the rehydrogenation of Mg<sub>2</sub>Si faces significant kinetic barriers, restricting its practical utilization. In this work, hydrogen-assisted high-energy ball milling (HHBM) was employed to hydrogenate Mg<sub>2</sub>Si. XRD and HRTEM results confirmed that Mg<sub>2</sub>Si was successfully converted into MgH<sub>2</sub> under the influence of titanium (Ti), achieving a conversion rate up to 76%. Aberration-corrected TEM (AC-TEM) revealed that <em>in situ</em> formed MgH<sub>2</sub> and titanium silicide (TiSi<sub>2</sub>) were homogenously mixed with robust interfaces. Such a growth mode reduces the migration path of Si atoms and the stability of Mg<sub>2</sub>Si, thus promoting the formation of MgH<sub>2</sub>. Furthermore, the as-synthesized MgH<sub>2</sub> particles with ultrafine particle size and adjacent catalysts show superior thermolysis and hydrolysis performances. Consequently, the composite exhibits excellent hydrogen storage properties, absorbing 50% of its total hydrogen capacity at room temperature and initiating dehydrogenation at 114.3 °C. <em>In situ</em> synchrotron X-ray diffraction (ISXRD) confirms the dehydrogenation of <em>in situ</em> generated ultrafine MgH<sub>2</sub> and part of TiSi<sub>2</sub> is converted to Mg<sub>2</sub>Si at 283 °C. In addition, the ultrafine, defect-rich MgH<sub>2</sub> particles show favorable hydrolysis kinetics and high conversion efficiency at relatively low temperatures (91.9% of the hydrogen yield can be achieved at 5 °C). This method developed in this work exhibits a new way to synthesize high-performance hydrogen storage materials.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"37 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144719583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhikang Ji, Wanting Sun, Xiaoguang Qiao, Lin Yuan, Fuguan Cong, Guojun Wang, Zhuoran Zeng, Mingyi Zheng, Shiwei Xu
{"title":"Microstructure tailoring and enhanced fracture toughness in as-extruded Mg-9Gd-4Y-1Zn-0.5Zr alloy via lamellar γ’ phase","authors":"Zhikang Ji, Wanting Sun, Xiaoguang Qiao, Lin Yuan, Fuguan Cong, Guojun Wang, Zhuoran Zeng, Mingyi Zheng, Shiwei Xu","doi":"10.1016/j.jma.2025.06.026","DOIUrl":"https://doi.org/10.1016/j.jma.2025.06.026","url":null,"abstract":"In this study, by adjusting the homogenization process, numerous lamellar-shaped γ’ phases are generated and uniformly distributed throughout the grain interior within as-extruded Mg-9Gd-4Y-1Zn-0.5Zr (wt.%) alloy, leading to a remarkable increase enhancement in both tensile strength and fracture toughness. Notably, as compared to the alloy containing block-shaped long-period stacking-ordered (LPSO) phase, when the lamellar-shaped γ’ phase is introduced within the α-Mg matrix, the fracture toughness of 29.7 MPa·m<sup>1/2</sup> can be achieved with a 27 % improvement. This superior fracture resistance is mainly attributed to the delamination toughening derived from the intensive micro-cracks occurring along γ’ phase interfaces oriented perpendicular to the primary fracture surface. Owing to the presence of lamellar-shaped γ’ phase, the fracture morphology can be significantly changed and characterized with deep dimples and pronounced deflection of main crack, which collectively contribute to the enhanced plastic energy dissipation and fracture toughness. The characteristics of deformed microstructure near the fracture surface demonstrate the activation of kinking and the inhibition of twin propagation due to the interactions with lamellar γ’ phase. Such deformation behavior can effectively impede the crack propagation and contribute to the superior fracture resistance. Besides, the X-ray computed tomography analysis of the fractured alloy exhibits the distribution and size of voids, indicating that the prolate voids preferentially nucleate and propagate parallel to the lamellar γ’ phase. Accordingly, the deformation mechanisms under a triaxial stress state involve the intricate interplay between lamellar γ' phase-induced delamination, crack deflection as well as void formation. Through the application of tailored pre-treatment heat treatment processes, the control of phase constituents within the microstructure can be achieved to improve the mechanical properties of Mg alloys. It is anticipated to provide a comprehensive understanding of the fracture behavior of Mg-Gd-Y-Zn-Zr, with particular emphasis on the synergistic effects of lamellar γ' phase and LPSO phase in the optimization of overall mechanical performance.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"24 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144719752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Simultaneously improving mechanical and corrosion properties of Mg-Y-Nd-Zr alloy via Sm addition","authors":"Zheng Wu, Xiaoya Chen, Dongzhen Wang, Quanan Li, Yunwei Gui, Baosheng Liu, Zeyu Zheng, Lingxiao Wang","doi":"10.1016/j.jma.2025.06.022","DOIUrl":"https://doi.org/10.1016/j.jma.2025.06.022","url":null,"abstract":"The strength-ductility trade-off in magnesium alloys remains a critical challenge urgently requiring resolution in their engineering applications. In this study, both mechanical and corrosion properties are enhanced in extruded Mg-Y-Nd-Zr alloys by Sm addition. Sm promotes dynamic recrystallization, activates non-basal slip systems and weakens basal texture intensity, leading to the sub-grain lamellar structure and rare earth texture. The EWS2 alloy exhibits an outstanding combination of high yield strength (328 MPa) and ductility (15.1 %). Furthermore, the fragmented second phases in the Sm-containing alloy are uniformly distributed, reducing the subsequent corrosion driving force after micro-galvanic corrosion and facilitating the growth of a more passivating and compact corrosion film. These combined effects contribute to the lowest degradation rate in the EWS2 alloy. This study demonstrates the correlation between microstructure and properties in Sm-containing WE series alloys, providing insights for the design of other high performance magnesium alloys.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"15 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}