Journal of Magnesium and Alloys最新文献

{"title":"Grain growth stagnation at 525 °C by nanoparticles in a solid-state additively manufactured Mg-4Y-3RE alloy","authors":"Xingjian Zhao, Daniel Olden, Brady Williams, Abhishek Pariyar, Dalong Zhang, Matthew Murphy, Philippa Reed, Paul Allison, Brian Jordon, Jiahui Qi, W. Mark Rainforth, Dikai Guan","doi":"10.1016/j.jma.2024.12.010","DOIUrl":"https://doi.org/10.1016/j.jma.2024.12.010","url":null,"abstract":"Ultrafine-grained (UFG) materials exhibit high strengths due to grain boundary strengthening, but grains can grow rapidly if post heat treatment is required, making it challenging to achieve grain boundary and precipitation strengthening simultaneously. Grain growth stagnation at 525 °C (0.87 T_m, melting point) was observed in a Mg-4Y-3RE alloy fabricated by additive friction stir deposition (AFSD), a novel solid-state additive manufacturing technology. The AFSD processing produced a UFG microstructure and two major second phases, Mg₄₁RE₅ and nanoparticles containing Y and O. After solid solution treatment (SST) at 525 °C for 72 h, no noticeable grain growth occurred. While Mg₄₁RE₅ particles dissolved into the matrix within 4 h of SST, the nanoparticles remained stable and unaltered. The observed grain growth stagnation is attributed to Zener pinning by these thermally stable nanoparticles. These new findings offer a novel approach to designing UFG materials with exceptional thermal stability for high-temperature applications.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"64 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857838","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":"A surface emphasized multi-task learning framework for surface property predictions: A case study of magnesium intermetallics","authors":"Gaoning Shi, Yaowei Wang, Kun Yang, Yuan Qiu, Hong Zhu, Xiaoqin Zeng","doi":"10.1016/j.jma.2024.12.005","DOIUrl":"https://doi.org/10.1016/j.jma.2024.12.005","url":null,"abstract":"Surface properties of crystals are critical in many fields, including electrochemistry and photoelectronics, the efficient prediction of which can expedite the design and optimization of catalysts, batteries, alloys etc. However, we are still far from realizing this vision due to the rarity of surface property-related databases, especially for multicomponent compounds, due to the large sample spaces and limited computing resources. In this work, we present a surface emphasized multi-task crystal graph convolutional neural network (SEM-CGCNN) to predict multiple surface properties simultaneously from crystal structures. The model is evaluated on a dataset of 3526 surface energies and work functions of binary magnesium intermetallics obtained through first-principles calculations, and obvious improvements are observed both in efficiency and accuracy over the original CGCNN model. By transferring the pre-trained model to the datasets of pure metals and other intermetallics, the fine-tuned SEM-CGCNN outperforms learning from scratch and can be further applied to other surface properties and materials systems. This study could be a paradigm for the end-to-end mapping of atomic structures to anisotropic surface properties of crystals, which provides an efficient framework to understand and screen materials with desired surface characteristics.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"41 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848859","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":"Enhancing the room-temperature plasticity of magnesium alloys: Mechanisms and strategies","authors":"Lu Zhang, Qian Yuan, Jun Tan, Quan Dong, Hao Lv, Fanglei Wang, Aitao Tang, Jürgen Eckert, Fusheng Pan","doi":"10.1016/j.jma.2024.12.008","DOIUrl":"https://doi.org/10.1016/j.jma.2024.12.008","url":null,"abstract":"The room-temperature plasticity of magnesium and its alloys is limited primarily by their hexagonal close-packed (HCP) crystal structure, which restricts the number of active slip systems available at room temperature. This limitation hinders their broader application in various industries. Consequently, enhancing the room-temperature plasticity of magnesium alloys is essential for expanding their usage. This review provides a comprehensive overview of the underlying mechanisms and strategies for enhancing room-temperature plasticity in magnesium alloys. The first section emphasizes the importance of improving plasticity in these materials. The second section uses bibliometric analysis to identify key research trends and emerging hotspots in the field. The third section explores the deformation mechanisms and factors that influence room-temperature plasticity. The fourth section discusses various methods for enhancing plasticity. The fifth section focuses on achieving a balance between strength and plasticity. Finally, the review concludes with insights into future prospects and challenges, offering guidance for the development of high-plasticity magnesium alloys and serving as a resource for both research and industrial applications.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"11 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848858","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":"Analytical model to characterize temperature-dependent anisotropic-asymmetric behavior of Mg-Gd-Y alloy","authors":"Pengfei Wu, Qiang Chen, Liucheng Zhou, Xiaoqing Liang, Yanshan Lou","doi":"10.1016/j.jma.2024.11.035","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.035","url":null,"abstract":"The work is conducted to uncover and simulate the dependence of the evolving anisotropic-asymmetric yield behavior on the temperature for an Mg-Gd-Y alloy. Experiments were carried out at 25∼300 °C, including uniaxial tension and compression. The strength is observed to decrease non-linearly as the temperature increases. Thermal softening effect is not significant when the temperature is lower than 200 °C, but the strength decreases dramatically at high temperature than 250 °C. Tension-compression asymmetry and anisotropy are observed to be strongly and nonlinearly dependent on strain and temperature. The temperature effect is taken into account in a combined Swift-Voce (SVT) model to predict the temperature-dependent strain hardening behavior with a higher accuracy than the traditional Johnson-Cook and Zerilli-Armstrong equations. An analytical Yoon2014 (A-Yoon2014) yield function is established to capture the evolving anisotropic-asymmetric behavior with respect to strain and temperature. The predicted force-stroke curves of the A-Yoon2014+SVT model are closer to the experimental results of the three-point bending process than the numerical results of the original Yoon2014+SVT model. Given its user-friendliness and high accuracy for the modeling of temperature-dependent anisotropic-asymmetric hardening behavior, the A-Yoon2014+SVT model is recommended to be utilized in the numerical simulation of plastic forming process for hexagonal close-packed metals.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"10 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857839","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":"The influence of Sm2O3 dopant on structure, morphology and transport critical current density of MgB2 wires investigated by using the transmission electron microscope","authors":"Daniel Gajda, Michał Babij, Andrzej Zaleski, Doğan Avci, Fırat Karaboga, Hakan Yetis, Ibrahim Belenli, Dariusz Zasada, Damian Szymański, Małgorzata Małecka, Wojciech Gil, Tomasz Czujko","doi":"10.1016/j.jma.2024.12.009","DOIUrl":"https://doi.org/10.1016/j.jma.2024.12.009","url":null,"abstract":"This study reports results for the morphology, crystal structure and critical parameters of Sm₂O₃-doped MgB₂ wires with low and high initial filling densities. The transmission electron microscope (TEM) images were done for the longitudinal section of MgB₂ wires. The results show that the Sm₂O₃ admixture significantly changes the morphology of the MgB₂ material, accelerates the formation of the MgB₂ phase, does not form rectangular MgB₂ crystallites, does not leave pure Mg, and forms Sm₂O₃ areas of 10 nm and 20 nm. The effects of Sm₂O₃ addition on MgB₂ formation in superconducting wires were revealed in detail in this study. Additionally, Sm₂O₃ causes the formation of point pinning regions that significantly increase the critical transport current density at the temperature range from 15 K to 30 K. The TEM images point out that rectangular MgB₂ crystallites are formed in undoped MgB₂ wires, which have not been previously reported. XRPD results showed that short-term heating allowed obtaining a larger amount of MgB₂ phase for the MgB₂ wire with high initial filling density. On the other hand, long heating time and high initial density slow down the creation of MgB₂ phase when the Mg is in the solid state.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"1 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848860","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":"Phase equilibria and crystal structures of ternary compounds in the Mg–Gd–Ag system over a composition range of 0–50 at.% Gd at 450 and 500 °C","authors":"Qin Li, Honghui Xu, Lijun Zhang","doi":"10.1016/j.jma.2024.11.032","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.032","url":null,"abstract":"Alloying with Gd and Ag can significantly enhance the comprehensive properties of magnesium alloys, and accurate phase equilibria are a necessity for advanced alloy design. However, literature review reveals limited information on the phase equilibria in the ternary Mg–Gd–Ag system. Thus, in this paper, the phase equilibria of the ternary Mg–Gd–Ag system in the region of 0–50 at.% Gd at 450 °C and 500 °C were investigated by combining the electron probe microanalysis and X-ray diffraction of totally 66 equilibrated alloys, with two isothermal sections at 450 °C and 500 °C established accordingly; and relatively high solid solubility of Ag in GdMg<sub>3</sub> was characterized. Moreover, seven ternary compounds (denoted as τ<sub>1</sub> to τ<sub>7</sub>) were found, and their crystal structures were refined by using Rietveld method. The τ<sub>1</sub> was identical to the previously reported X phase with a diamond-cubic structure, while the remaining six ternary compounds (τ<sub>2</sub> to τ<sub>7</sub>) were newly found. The seven ternary compounds (τ<sub>1</sub> to τ<sub>7</sub>) are among the space groups of Fd<span><span style=\"\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mover accent=\"true\" is=\"true\"><mn is=\"true\">3</mn><mo is=\"true\">¯</mo></mover></math>' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"2.202ex\" role=\"img\" style=\"vertical-align: -0.235ex;\" viewbox=\"0 -846.5 570.5 947.9\" width=\"1.325ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"><g is=\"true\"><g is=\"true\" transform=\"translate(35,0)\"><use xlink:href=\"#MJMAIN-33\"></use></g><g is=\"true\" transform=\"translate(0,197)\"><use x=\"-70\" xlink:href=\"#MJMAIN-AF\" y=\"0\"></use><use x=\"70\" xlink:href=\"#MJMAIN-AF\" y=\"0\"></use></g></g></g></svg><span role=\"presentation\"><math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mover accent=\"true\" is=\"true\"><mn is=\"true\">3</mn><mo is=\"true\">¯</mo></mover></math></span></span><script type=\"math/mml\"><math><mover accent=\"true\" is=\"true\"><mn is=\"true\">3</mn><mo is=\"true\">¯</mo></mover></math></script></span>m (τ<sub>1</sub>), P4/nmm (τ<sub>2</sub>), P6<sub>3</sub>mc (τ<sub>3</sub>), P6<sub>3</sub>mc (τ<sub>4</sub>), Pmn2<sub>1</sub> (τ<sub>5</sub>), P<span><span style=\"\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mover accent=\"true\" is=\"true\"><mn is=\"true\">6</mn><mo is=\"true\">¯</mo></mover></math>' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"2.202ex\" role=\"img\" style=\"vertical-align: -0.235ex;\" viewbox=\"0 -846.5 570.5 947.9\" width=\"1.325ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g ","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"7 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848906","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":"Fabrication and characterization of magnesium-based nanocomposites reinforced with Baghdadite and carbon nanotubes for orthopaedical applications","authors":"Mojtaba Ansari, Shiva Mahdavikia, Hossein Eslami, Mozhdeh Saghalaini, Hamid Taghipour, Fatemeh Zare, Shahin Shirani, Mohammad Hossein Alizadeh Roknabadi","doi":"10.1016/j.jma.2024.12.004","DOIUrl":"https://doi.org/10.1016/j.jma.2024.12.004","url":null,"abstract":"This study explores the potential of Mg/Carbon Nanotubes/Baghdadite composites as biomaterials for bone regeneration and repair while addressing the obstacles to their clinical application. BAG powder was synthesized using the sol-gel method to ensure a fine distribution within the Mg/CNTs matrix. Mg/1.5 wt.% CNT composites were reinforced with BAG at weight fractions of 0.5, 1.0, and 1.5 wt.% using spark plasma sintering at 450 °C and 50 MPa after homogenization via ball milling. The cellular bioactivity of these nanocomposites was evaluated using human osteoblast-like cells and adipose-derived mesenchymal stromal cells. The proliferation and attachment of MG-63 cells were assessed and visualized using the methylthiazol tetrazolium (MTT) assay and SEM, while AD-MSC differentiation was measured using alkaline phosphatase activity assays. Histograms were also generated to visualize the diameter distributions of particles in SEM images using image processing techniques. The Mg/CNTs/0.5 wt.% BAG composite demonstrated optimal mechanical properties, with compressive strength, yield strength, and fracture strain of 259.75 MPa, 180.25 MPa, and 31.65 %, respectively. Machine learning models, including CNN, LSTM, and GRU, were employed to predict stress-strain relationships across varying BAG amounts, aiming to accurately model these curves without requiring extensive physical experiments. As shown by contact angle measurements, enhanced hydrophilicity promoted better cell adhesion and proliferation. Furthermore, corrosion resistance improved with a higher BAG content. This study concludes that Mg/CNTs composites reinforced with BAG concentrations below 1.0 wt.% offer promising biodegradable implant materials for orthopedic applications, featuring adequate load-bearing capacity and improved corrosion resistance.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"23 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848857","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":"Ga5Mg2 alloy solid electrolyte interphase in-situ formed in [Mg(DME)3][GaCl4]2/PYR14TFSI/DME electrolyte enables high-performance rechargeable magnesium batteries","authors":"Miao Cheng, Yabing Li, Jiaming Shi, Qianqian Liu, Ruirui Wang, Wujun Ma, Bo Liu, Muzi Chen, Wanfei Li, Yuegang Zhang","doi":"10.1016/j.jma.2024.12.003","DOIUrl":"https://doi.org/10.1016/j.jma.2024.12.003","url":null,"abstract":"Exploiting high-performance electrolyte holds the key for realization practical application of rechargeable magnesium batteries (RMBs). Herein, a new non-nucleophilic mononuclear electrolyte was developed and its electrochemical active species was identified as [Mg(DME)₃][GaCl₄]₂ through single-crystal X-ray diffraction analysis. The as-synthesized Mg(GaCl₄)₂-IL-DME electrolyte could achieve a high ionic conductivity (9.85 mS cm⁻¹), good anodic stability (2.9 V vs. Mg/Mg²⁺), and highly reversible Mg plating/stripping. The remarkable electrochemical performance should be attributed to the in-situ formation of Mg²⁺-conducting Ga₅Mg₂ alloy layer at the Mg/electrolyte interface during electrochemical cycling, which not only efficiently protects the Mg anode from passivation, but also allows for rapid Mg-ion transport. Significantly, the Mg(GaCl₄)₂-IL-DME electrolyte showed excellent compatibility with both conversion and intercalation cathodes. The Mg/S batteries with Mg(GaCl₄)₂-IL-DME electrolyte and KB/S cathode showed a high specific capacity of 839 mAh <em>g</em>⁻¹ after 50 cycles at 0.1 C with the Coulombic efficiency of ∼100 %. Moreover, the assembled Mg||Mo₆S₈ batteries delivered a reversible discharge capacity of 85 mAh <em>g</em>⁻¹ after 120 cycles at 0.2 C. This work provides a universal electrolyte for the realization of high-performance and practical RMBs, especially Mg/S batteries.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"18 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841426","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":"Statistical investigation on the tension-compression asymmetry of slip behavior and plastic heterogeneity in an aged Mg-10Y sheet","authors":"Ran Ni, Huashen Liu, Shen Hua, Hao Zhou, Ying Zeng, Dongdi Yin","doi":"10.1016/j.jma.2024.11.033","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.033","url":null,"abstract":"The grain-scale tension-compression (T-C) asymmetric slip behavior and geometrically necessary dislocation (GND) density in an aged and twin-free Mg-10Y sheet were statistically studied using slip trace analysis and electron backscatter diffraction (EBSD) analysis. A significantly asymmetric slip activity, i.e., higher tensile slip activity and proportion of non-basal slip, was manifested. Prismatic 〈a〉 (37.1 %) and basal 〈a〉 (27.6 %) slips dominated the tensile deformation, followed by pyramidal II 〈<em>c</em> + <em>a</em>〉 slip (20.0 %). While during compression, basal 〈a〉 slip (61.9 %) was the most active slip mode, and only 6.9 % pyramidal II 〈<em>c</em> + <em>a</em>〉 slip was observed. The critical resolved shear stress (CRSS) ratio was estimated based on ∼800 sets of the identified slip traces, which suggested that the CRSS_{pyr II}/CRSS_bas for compression was ∼3 times than that of tension. The pyramidal II 〈<em>c</em> + <em>a</em>〉 slip was more active when the slip plane was under tension than under compression, which was consistent with the calculated asymmetric CRSS_{pyr II}/CRSS_bas. The activity of multiple slip, cross slip and slip transfer, as well as the GND density were also T-C asymmetric. This work thoughtfully demonstrated the T-C asymmetric slip behavior and plastic heterogeneity in Mg alloys which was believed to be responsible for the macroscopic T-C asymmetry when twinning was absent. The present statistical results are valuable for validating and/or facilitating crystal plasticity simulations.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"43 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142832013","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":"Understanding activation and growth of twin variants in polycrystalline magnesium under tension and compression: An atomistic study","authors":"Huicong Chen, Cheng Chen, Jun Song, Stephen Yue","doi":"10.1016/j.jma.2024.12.007","DOIUrl":"https://doi.org/10.1016/j.jma.2024.12.007","url":null,"abstract":"Deformation twinning is known to be important in the acquisition of plasticity for hexagonal close-packed crystal structures, of great implication to the design and development of novel high-strength Mg alloys with enhanced formability. Accurate understanding of deformation twinning necessitates critical mechanistic knowledge of the activation and selection of twins at nanoscale. In this work, considering polycrystalline Mg, we performed comprehensive molecular dynamics simulations to investigate deformation twinning under uniaxial tension and compression loading. An algorithm has been developed and implemented to identify the active twin variants of three operating twin modes during deformation. Sharp contrast between tension and compression loading in terms of twin patterns and twin growth was observed, attributed to difference in twin variant activation and twin-twin interaction under the two loading conditions. Furthermore, the critical role of Schmid factor in twin variant activation and selection has been elucidated, in good agreement with experimental observations. This study contributes critical insights towards advancing our understanding of the complex behaviors of deformation twinning in polycrystalline Mg.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"30 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142832012","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}