Journal of Magnesium and Alloys最新文献_第3页

Multilayered PCL/MAO@TiO2 nanoparticle coatings: Optimizing degradation and mechanical stability of biodegradable magnesium alloy bone implants 多层PCL/MAO@TiO2纳米颗粒涂层：优化可生物降解镁合金骨植入物的降解和机械稳定性

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-16 DOI: 10.1016/j.jma.2025.08.014

Lvxin Chen, Jingyi Zhang, Jun Cheng, Yipei Mao, Jun Xu, Meng Yin, Yixuan He, Meifeng He

{"title":"Multilayered PCL/MAO@TiO2 nanoparticle coatings: Optimizing degradation and mechanical stability of biodegradable magnesium alloy bone implants","authors":"Lvxin Chen, Jingyi Zhang, Jun Cheng, Yipei Mao, Jun Xu, Meng Yin, Yixuan He, Meifeng He","doi":"10.1016/j.jma.2025.08.014","DOIUrl":"https://doi.org/10.1016/j.jma.2025.08.014","url":null,"abstract":"In this study, in view of the corrosion resistance and bio functionality limitations of medical magnesium alloys, a PCL/MAO@TiO₂ NPS composite coating was fabricated to enhance biodegradable magnesium alloy orthopedic implants. This composite coating effectively inhibited pitting corrosion and decreased the degradation rate of the magnesium alloy substrate. Specifically, the corrosion current density of the overall specimen decreased by five orders of magnitude compared to that of the substrate. In vitro cell experiments demonstrated that the composite coating significantly decelerated the degradation of the magnesium alloy. The degradation products and appropriate magnesium ion concentration promoted cell growth and proliferation. After 72-h co-culturing of specimen extracts with cells, cell viability remained at 100 %. Antimicrobial test results showed that due to the synergistic effect of ultraviolet treated TiO₂ nanoparticles and other components, the specimens exhibited excellent antimicrobial properties. Moreover, in vivo animal implantation tests revealed that the PCL/MAO@TiO₂ NPS composite coated specimens had remarkable bone enhancing capabilities, which were conducive to the healing and functional restoration of bone tissue. Overall, the numerous advantages suggest that the PCL/MAO@TiO₂ NPS composite coatings hold great promise for improving magnesium alloy implants in clinical applications.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"48 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145067819","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}

引用次数: 0

Three dimensional-transition element selectivity for electrochemical hydrogen charging in MgAlNi-based lightweight high-entropy alloys as electrodes for M-MH batteries mgalni基轻质高熵合金作为M-MH电池电极的电化学充氢的三维过渡元素选择性

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-16 DOI: 10.1016/j.jma.2025.08.029

A. Martinez-Garcia, Víctor M. Orozco-Carmona, J.M. Mendoza-Duarte, S. González, A.K. Navarro-Mtz, E.A. Juarez-Arellano, C.G. Garay-Reyes, R. Martínez-Sánchez

{"title":"Three dimensional-transition element selectivity for electrochemical hydrogen charging in MgAlNi-based lightweight high-entropy alloys as electrodes for M-MH batteries","authors":"A. Martinez-Garcia, Víctor M. Orozco-Carmona, J.M. Mendoza-Duarte, S. González, A.K. Navarro-Mtz, E.A. Juarez-Arellano, C.G. Garay-Reyes, R. Martínez-Sánchez","doi":"10.1016/j.jma.2025.08.029","DOIUrl":"https://doi.org/10.1016/j.jma.2025.08.029","url":null,"abstract":"This study reports the effect of 3d transition elements on the electrochemical hydrogen storage of MgNiAl-based high-entropy alloys (HEAs). The HEAs were designed using empirical equations that relate thermodynamic parameters such as enthalpy and valence electron concentration. The HEAs of the MgAlNiTiCr, MgAlNiTiCo, MgAlNiFeTi, MgAlNiFeCu and MgAlNiFeZn alloys systems were obtained by high-energy ball-milling. The electrochemical hydrogen storage properties investigated were the activation capacity, discharge capacity, charge-discharge kinetics, corrosion-passivation, and hydrogen diffusion mechanism. The design equations for the HEAs predicted the formation of a solid solution with a body-centered cubic structure as the main phase, which was confirmed after structural and microstructural characterization. Alloys with Ti presence favors the TiH2 formation as a secondary phase during the milling process. The HEAs revealed good activation properties for electrochemical hydrogen storage. The electrochemical analysis results of the HEAs porous electrodes showed that Cr inhibits the electrode discharge capacity, Co improves the charge/discharge kinetics, Ti and Fe influence the diffusion mechanism, Cu significantly increases the hydrogen discharge capacity and Zn provides a good discharge capacity and facilitates the corrosion-oxidation of the electrode surface, similar to Cr.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"78 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145067749","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}

引用次数: 0

The effect of ultrasonic surface rolling process on the gradient microstructure and wear resistance of AZ31 thin sheet 超声波表面轧制工艺对AZ31薄板梯度组织及耐磨性的影响

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-16 DOI: 10.1016/j.jma.2025.08.023

Rongxue Liu, Xihai Li, Yifan Song, Zhaojie Wang, Lingyu Zhao, Fangqiang Ning, Hong Yan, Rongshi Chen

{"title":"The effect of ultrasonic surface rolling process on the gradient microstructure and wear resistance of AZ31 thin sheet","authors":"Rongxue Liu, Xihai Li, Yifan Song, Zhaojie Wang, Lingyu Zhao, Fangqiang Ning, Hong Yan, Rongshi Chen","doi":"10.1016/j.jma.2025.08.023","DOIUrl":"https://doi.org/10.1016/j.jma.2025.08.023","url":null,"abstract":"This study investigates the effects of the ultrasonic surface rolling process (USRP) on the surface microstructure, texture, and wear behavior of commercial AZ31 magnesium alloy sheet. The application of USRP induces a depth-dependent gradient microstructure characterized by a gradual transition from fine-grained surface layers to coarser-grained regions. Severe plastic deformation at the surface significantly enhances surface microhardness, with values increasing from 63.8 HV in the untreated specimen to 132.9 HV after USRP-4 passes. The thickness of the plastic deformation layer exhibits process-dependent behavior, growing from 200 µm (two passes) to 250 µm (four passes). Wear test results indicate that the wear resistance of the material is significantly enhanced after USRP treatment. This improvement is primarily attributed to the combined effects of the following factors: surface grain refinement, the role of dislocation-induced twinning, increased hardness, the formation of nanoscale secondary phases, introduction of residual compressive stresses, weakened surface texture, and reduced surface roughness. Notably, both friction coefficients and wear volumes show a direct dependence on the number of rolling passes. This study systematically elucidates the underlying mechanisms linking USRP-induced microstructural evolution to enhanced wear performance, providing critical insights for optimizing surface engineering strategies in magnesium alloys.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"9 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145077491","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}

引用次数: 0

The role of microstructure on the degradation behavior and biocompatibility of Mg-Ca-Zn-Y-Mn alloy 微观结构对Mg-Ca-Zn-Y-Mn合金降解行为和生物相容性的影响

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-16 DOI: 10.1016/j.jma.2025.08.001

Diana C. Martinez, Anna Dobkowska, Alessia Paradiso, Daria Drozdenko, Andrea Farkas, Kristián Máthis, Péter Jenei, Péter Nagy, Jenő Gubicza, Shin-ichi Inoue, Yoshihito Kawamura, Wojciech Święszkowski

引用次数: 0

Structural and defect engineering of Pt-loaded MAX fibers with oxygen vacancies for enhanced hydrogen storage properties of MgH2 氧空位pt负载MAX纤维增强MgH2储氢性能的结构与缺陷工程

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-14 DOI: 10.1016/j.jma.2025.08.024

Guorong Zhang, Taigen Liang, Fen Xu, Lixian Sun, Sheng Wei, Jiaxi Liu, Lina Qin, Xia Lin, Yongpeng Xia

{"title":"Structural and defect engineering of Pt-loaded MAX fibers with oxygen vacancies for enhanced hydrogen storage properties of MgH2","authors":"Guorong Zhang, Taigen Liang, Fen Xu, Lixian Sun, Sheng Wei, Jiaxi Liu, Lina Qin, Xia Lin, Yongpeng Xia","doi":"10.1016/j.jma.2025.08.024","DOIUrl":"https://doi.org/10.1016/j.jma.2025.08.024","url":null,"abstract":"Magnesium hydride (MgH2) is a promising solid-state hydrogen storage material due to its high hydrogen content and cyclic stability. However, its practical applications are limited by slow desorption kinetics and a high dehydrogenation temperature. To address these challenges, Pt-loaded MAX fibers with oxygen vacancies (Pt@MFs) have been synthesized by using vortex and hydrothermal methods. And the effects of the Pt@MFs on the hydrogen storage properties of MgH2 are investigated. The results display that the MgH2 doped with 10wt% Pt@MFs begins dehydrogenation at 169.3 °C and absorbs 5.73 wt% hydrogen in just 30 s at 125 °C and 30 bar hydrogen pressure. After 30 cycles, the MgH2–10 wt% Pt@MFs retains 98.7% of its initial capacity, showcasing excellent cycling stability. The synergistic effect of the MAX fiber network's active sites, oxygen vacancies, anchored Pt nanoparticles and intermetallic compounds (PtTi, Pt3Ti) in the MgH2–10 wt% Pt@MFs composite significantly enhances hydrogen storage kinetics by facilitating diffusion, optimizing electron transfer, and weakening Mg-H bonds. The design concept of this material offers a novel strategy for improving the kinetics and stability of MgH2.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"70 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145056884","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}

引用次数: 0

Synergistic regulation of texture and second phases to enhance the mechanical properties and long-term corrosion resistance of friction stir processed Mg-14Gd-0.6Ce-0.5Zr alloy 通过织构和第二相的协同调节，提高搅拌摩擦处理Mg-14Gd-0.6Ce-0.5Zr合金的力学性能和长期耐腐蚀性

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-13 DOI: 10.1016/j.jma.2025.08.016

Dongzhen Wang, Xiaoya Chen, Zheng Wu, Quanan Li, Hongxi Zhu, Qiansen Liu, Tianyao Guo

{"title":"Synergistic regulation of texture and second phases to enhance the mechanical properties and long-term corrosion resistance of friction stir processed Mg-14Gd-0.6Ce-0.5Zr alloy","authors":"Dongzhen Wang, Xiaoya Chen, Zheng Wu, Quanan Li, Hongxi Zhu, Qiansen Liu, Tianyao Guo","doi":"10.1016/j.jma.2025.08.016","DOIUrl":"https://doi.org/10.1016/j.jma.2025.08.016","url":null,"abstract":"In this study, friction stir processing (FSP) was employed to modify the as-cast Mg-14Gd-0.6Ce-0.5Zr alloy, and the effects of texture evolution and distribution of second phases on mechanical properties were systematically investigated. The results show that friction stir processing effectively refined the coarse Mg5Gd phases into nanoscale second phases uniformly distributed along grain boundaries. The synergistic effect of texture weakening and second phases refinement significantly enhanced the tensile strength and elongation of the FSP-1000-120 alloy to 302.1 MPa and 18.3%, respectively, representing increases of 20.8% and 281.3% compared to the as-cast alloy. The as-cast alloy has a lower corrosion rate in the initial stage due to fewer micro-galvanic corrosion sites. However, the uniform distribution of the second phase in the FSP-treated (FSPed) alloy contributes to the formation of a more complete and dense corrosion product film. After 120 h of immersion, the as-cast alloy forms deep pits due to the continuous dissolution at the second phase-matrix interface, with the average corrosion rate increasing from 0.31 to 0.47 mL/cm2/h. The long-term corrosion rates of FSP-1000-60, FSP-1000-120, and FSP-1200-120 samples are stable at 0.36, 0.43, and 0.50 mL/cm2/h, respectively. Research reveals that FSP regulates texture and second phase distribution to achieve synergistic strengthening of alloy strength plasticity, and the homogenization of second phase distribution is a key factor in improving the long-term corrosion resistance of alloys.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"24 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145043256","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}

引用次数: 0

Pulse current induced damping enhancement in micron-submicron pure magnesium 微米亚微米纯镁中脉冲电流诱导的阻尼增强

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-13 DOI: 10.1016/j.jma.2025.08.009

Di Su, Jianfeng Fan, Qiang Zhang, Binshan Wang, Weiping Huang, Hongbiao Dong

{"title":"Pulse current induced damping enhancement in micron-submicron pure magnesium","authors":"Di Su, Jianfeng Fan, Qiang Zhang, Binshan Wang, Weiping Huang, Hongbiao Dong","doi":"10.1016/j.jma.2025.08.009","DOIUrl":"https://doi.org/10.1016/j.jma.2025.08.009","url":null,"abstract":"Achieving synergistic enhancement of damping-mechanical performance in pure Mg remains a tough challenge. Electric pulse treatment has proven effective in regulating the microstructure of materials. This work comprehensively investigated the effects of pulse current on the microstructure and damping performance of pure Mg with micron-submicron grains, and revealed the mechanisms of damping enhancement associated with electric pulse treatment. The results suggest that pulse current effectively promotes dislocation disentanglement, thereby increasing the mobile dislocation density. In addition, pulse current facilitates dislocation slip and grain boundary relaxation in submicron samples, accompanied by the generation of high-density stacking faults. The microstructural evolution enhances the damping capacity of pure Mg. After electric pulse treatment, the strain amplitude independent damping (Q0–1) in samples I-Q-0 (7 µm), I-Q-20 (308 nm), and I-Q-60 (155 nm) increased by 17%, 11%, and 14%, while the strain amplitude dependent damping (Qh-1) increased by 5%, 11%, and 54%, respectively. The increment in strain amplitude independent damping capacity ΔQ0–1 is dominated by dislocations. Because pulse current can induce higher mobile dislocation density, contributing to greater energy dissipation and enhanced damping. Besides, the increment in strain amplitude dependent damping capacity ΔQh-1 in micron I-Q-0 (7 µm) sample is also dominated by dislocation behavior. However, in submicron I-Q-20 (308 nm) and I-Q-60 (155 nm) samples, ΔQh-1 is dominated by stacking faults rather than dislocations. Consequently, damping and mechanical properties are synergistically improved in micron–submicron pure Mg by electric pulse treatment.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"16 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145043255","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}

引用次数: 0

Improvement heat resistance and thermal stability of Mg-7Y-3Zn-0.4Mn alloy by Al/Ca element addition 添加Al/Ca元素提高Mg-7Y-3Zn-0.4Mn合金的耐热性和热稳定性

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-12 DOI: 10.1016/j.jma.2025.08.008

Fan Wu, Jiabo Luo, Qiuju He, Yao Cheng, Xuan Luo, Xinde Huang, Yunchang Xin

{"title":"Improvement heat resistance and thermal stability of Mg-7Y-3Zn-0.4Mn alloy by Al/Ca element addition","authors":"Fan Wu, Jiabo Luo, Qiuju He, Yao Cheng, Xuan Luo, Xinde Huang, Yunchang Xin","doi":"10.1016/j.jma.2025.08.008","DOIUrl":"https://doi.org/10.1016/j.jma.2025.08.008","url":null,"abstract":"Elevated temperatures lead to a reduction in the strength of magnesium-based alloys. At elevated temperatures (200–300 °C), even rare-earth reinforced Mg alloys experience notable strength deterioration. In this paper, the additions of different composition (0.4 and 0.8 wt.%) of Ca or Al in Mg-7Y-3Zn-0.4Mn alloy is added to increase the service temperature. The strength of Mg-7Y-3Zn-0.4Mn is effectively improved by Al element and higher after more Al is added, particularly at 300 °C. Specifically, the ultimate tensile strength (UTS) of Mg-7Y-3Zn-0.4Mn alloy increases from 181 MPa to 213 MPa by adding 0.8 wt.% Al. Remarkably, the UTS declines merely by 36 MPa (from 249 to 213 MPa) between 200 °C and 300 °C. And at both RT and elevated temperature (300 °C), Al alloying effectively improves the EL of Mg-7Y-3Zn-0.4Mn alloy, with improvements from 5.4 % to 14.4 % and 8.2 % to 23.1 %, respectively. Al element has dramatically increased the thermal stability and more significant effect at higher temperature. After prolonged annealing at 475 °C for 48 h, the Mg-7Y-3Zn-0.4Mn-0.8Al alloy shows only a limited increase in grain size from 16.9 to 23 µm. Even after annealing at 525 °C for 48 h, the Mg-7Y-3Zn-0.4Mn-0.8Al alloy maintains a grain size of approximately 41 µm. However, the growth of grain in basic alloy and 0.4 wt.% Ca alloy exceeds 150 µm. For microstructure, Ca addition primarily promotes LPSO phase formation and subsequent coarsening. Alloying with Al leads to three distinct microstructural changes: the LPSO phase transitions from interconnected networks to discrete blocks, Al2Y particles precipitate homogenously, and second phases distribute more uniformly. And the texture is also weakened by Al element. Essential mechanisms of Ca/Al effects on mechanical properties, thermal stability, and microstructure in Mg-7Y-3Zn-0.4Mn alloys are investigated.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"106 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145043264","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}

引用次数: 0

Review of development and progress on thixomolding technology of magnesium alloys 镁合金触变成型技术的发展与进展

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-12 DOI: 10.1016/j.jma.2025.08.011

Minjie Huang, Jufu Jiang, Ying Wang

{"title":"Review of development and progress on thixomolding technology of magnesium alloys","authors":"Minjie Huang, Jufu Jiang, Ying Wang","doi":"10.1016/j.jma.2025.08.011","DOIUrl":"https://doi.org/10.1016/j.jma.2025.08.011","url":null,"abstract":"In recent years, thixomolding technology has injected new vitality into the large-scale application of magnesium (Mg) alloys in multiple fields of manufacturing, promoting the lightweighting and green manufacturing of structural component products. This article aims to comprehensively summarize the development and progress of Mg alloy thixomolding technology. This paper first reviews the materials including Mg alloys and Mg based composites for thixomolding applications, as well as thixomolding process including process characteristic, influence of process parameters, process defects, process optimization. Subsequently, properties of thixomolded Mg alloys and Mg based composites are discussed in detail. Then, development of thixomolding machine, progress of equipment units, advanced and large-scale thixomolding equipment are discussed. The current industrial application of Mg alloy thixomolding technology and present successful application cases are also summarized. Finally, perspectives on Mg alloy thixomolding technology in terms of developing specialized Mg alloys, technological barriers and breakthroughs, advanced thixomolding equipment, talent cultivation and sustainable development are proposed. Overall, this paper offers an in-depth insight of Mg alloy thixomolding technology, highlighting its potential in manufacturing high-performance and high-quality Mg alloy components for multiple fields.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"54 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145043224","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}

引用次数: 0

Influence of initial texture on twinning and slip behaviors in rolled AZ31 magnesium alloy during three-point bending deformation 初始织构对轧制AZ31镁合金三点弯曲孪晶和滑移行为的影响

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-09-11 DOI: 10.1016/j.jma.2025.08.015

Jong Un Lee, Taekyung Lee, Jong Woo Won, Sung Hyuk Park

{"title":"Influence of initial texture on twinning and slip behaviors in rolled AZ31 magnesium alloy during three-point bending deformation","authors":"Jong Un Lee, Taekyung Lee, Jong Woo Won, Sung Hyuk Park","doi":"10.1016/j.jma.2025.08.015","DOIUrl":"https://doi.org/10.1016/j.jma.2025.08.015","url":null,"abstract":"This study investigates the influence of initial crystallographic texture on the deformation mechanisms during three-point bending of AZ31 Mg alloy sheets. Three distinct orientations are examined by using the following bending specimens: (i) the normal direction (ND) sample, where the c-axes are predominantly aligned along the specimen thickness, (ii) the rolling direction (RD) sample, where the c-axes are mostly aligned along the longitudinal direction, and (iii) the 45 sample, where the c-axes are tilted at approximately 45° from both the thickness and longitudinal directions. The bending properties vary significantly depending on the initial texture, thereby affecting the strain accommodation and dominant deformation modes. The ND sample exhibits the lowest bendability due to its unfavorable orientation for {10–12} extension twinning and basal slip, which results in poor strain accommodation and early crack initiation in the outer tensile side. By comparison, the RD sample demonstrates an approximately 22.1 % improvement, with extensive {10–12} extension twinning in the outer tensile zone. Meanwhile, the 45 sample exhibits the highest bendability (approximately 75.7 % greater than that of the ND sample) due to sustained activation of both basal slip and {10–12} extension twinning, promoting uniform strain distribution and delaying fracture. Detailed electron backscatter diffraction analysis reveals that the 45 sample retains favorable crystallographic orientations for basal slip throughout bending, minimizing strain localization and enhancing the bendability. These findings highlight the importance of tailoring the initial texture in order to optimize the bending properties of Mg alloy sheets, and provide valuable insights for improving the manufacturability of Mg-based structural components.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"16 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145043259","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}

引用次数: 0