Journal of Magnesium and Alloys最新文献_第6页

Recent developments in coatings on biodegradable Mg alloys: A review 可生物降解镁合金涂层研究进展

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-12 DOI: 10.1016/j.jma.2025.01.027

Jie Yang, Zhihan Zhang, Wenhui Yao, Yulong Wu, Yuyang Gao, Yan Yang, Liang Wu, Maria Serdechnova, Carsten Blawert, Fusheng Pan

{"title":"Recent developments in coatings on biodegradable Mg alloys: A review","authors":"Jie Yang, Zhihan Zhang, Wenhui Yao, Yulong Wu, Yuyang Gao, Yan Yang, Liang Wu, Maria Serdechnova, Carsten Blawert, Fusheng Pan","doi":"10.1016/j.jma.2025.01.027","DOIUrl":"https://doi.org/10.1016/j.jma.2025.01.027","url":null,"abstract":"Mg and its alloys show high potential to be applied as implant materials due to their superior properties like biodegradability, bioactivity, biocompatibility, and suitable mechanical behaviors. Nevertheless, the fast and uncontrolled degradation of Mg alloys in biological environment severely restricts their wide applications as biomedical materials. In comparison with alloying, surface coatings can not only improve corrosion resistance but also impart other bio-functional properties to achieve diverse clinical requirements. This review analyzes and summarizes the most recent developments in popular coating technologies, including micro-arc oxidation, electrophoretic deposition, chemical conversion, anodic oxidation, layered double hydroxide, and sol-gel coatings. Considering inevitable damages under complex service conditions, smart self-healing coatings are also introduced in each coating technology. The existing issues and future perspectives are finally discussed to facilitate applications of Mg alloys as biomedical materials in the medical industry.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"24 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608517","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

3D forming space and abnormal lamellar microstructures in a Mg-10Gd-Zr alloy fabricated by laser powder bed fusion 激光粉末床熔合制备Mg-10Gd-Zr合金的三维成形空间和异常层状组织

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-10 DOI: 10.1016/j.jma.2025.02.005

Ziyi Liu, Qingchen Deng, Ziyan Li, Yiwen Ding, Jing Luo, Hong Liu, Liming Peng

{"title":"3D forming space and abnormal lamellar microstructures in a Mg-10Gd-Zr alloy fabricated by laser powder bed fusion","authors":"Ziyi Liu, Qingchen Deng, Ziyan Li, Yiwen Ding, Jing Luo, Hong Liu, Liming Peng","doi":"10.1016/j.jma.2025.02.005","DOIUrl":"https://doi.org/10.1016/j.jma.2025.02.005","url":null,"abstract":"Mg-10Gd-Zr (G10K, wt. %) is a commonly used high-performance magnesium-rare earth alloy that has demonstrated good suitability for additive manufacturing processes. However, the formability and microstructures need to be further explored for its engineering application. This study presents a systematic and in-depth investigation of the defects, microstructural characteristics, and mechanical properties of G10K alloy fabricated by laser powder bed fusion (LPBF) as a function of processing parameters. A 3D forming space for LPBF-G10K alloy is constructed by adopting laser beam diameter as the third variant other than laser power and scanning speed. With a laser beam diameter of 120 µm, the fluctuation of the melt pool is minimized, leading to the suppression of gas porosities and balling defects, and thus the expansion of forming zone of the alloy as compared to laser beam diameters of 100 or 140 µm. LPBF-G10K alloy under the optimal processing parameter consists of a heterogeneous microstructure of coarse and fine grains. The formation of abnormal lamellar structures in the coarse grains at the middle of melt pools is attributed to the planar growth along laser scanning direction. The lamellar coarse grains provide strength in the alloy due to texture-strengthening effect, while plastic deformation is primarily accommodated by equiaxed grains. These findings are instrumental for application and future modification of the LPBF-G10K alloy.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"19 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143582863","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

Enhancing the formability of flame-retardant magnesium alloy through Zn alloying 通过锌合金化提高阻燃镁合金的成形性

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-07 DOI: 10.1016/j.jma.2024.11.001

Xizao Wang, Ce Zheng, Tianjiao Luo, Tianyu Liu, Qiuyan Huang, Yingju Li, Yuansheng Yang

{"title":"Enhancing the formability of flame-retardant magnesium alloy through Zn alloying","authors":"Xizao Wang, Ce Zheng, Tianjiao Luo, Tianyu Liu, Qiuyan Huang, Yingju Li, Yuansheng Yang","doi":"10.1016/j.jma.2024.11.001","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.001","url":null,"abstract":"Poor formability is a key problem that limits the application of flame-retardant Mg-Al-Ca based alloys at room temperature. In this study, we present a new Mg-6Al-3Ca-0.4Mn-2Zn (wt%) alloy which exhibits excellent flame-retardant performance and excellent formability. Due to the high Ca content, the Mg-6Al-3Ca-0.4Mn-2Zn (wt%) alloy does not burn at 1065 °C. The formability of the alloys is measured using a three-point bending test, and the Mg-6Al-3Ca-0.4Mn-2Zn (wt%) alloy shows excellent formability, with a significant increase in bending displacement from 7.1 mm to 23.8 mm compared to the Mg-6Al-3Ca-0.4Mn (wt%) alloy. The combined effect of the weakened basal texture, the reduction of twins and the plastically deformable Al<sub>2</sub>Ca phase particles ensures good formability of the Mg-6Al-3Ca-0.4Mn-2Zn (wt%) alloy. The dynamic recrystallization mechanisms of the alloys have been analyzed, and the promotion of dynamic recrystallization by the PSN mechanism is responsible for the weakened basal texture and the reduction of twins in the Mg-6Al-3Ca-0.4Mn-2Zn (wt%) alloy. The new Mg alloy is attractive for industrial applications due to its excellent flame-retardant performance and formability.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"26 7 Suppl 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570287","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

Magnesium-reinforced sandwich structured composite membranes promote osteogenesis 镁增强夹层结构复合膜促进成骨

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-06 DOI: 10.1016/j.jma.2025.02.008

Feilong Wang, Yunjiao He, Dong Xiang, Xuenan Liu, Fan Yang, Yulin Hou, Weiliang Wu, Dandan Xia, Yongxiang Xu, Yunsong Liu

{"title":"Magnesium-reinforced sandwich structured composite membranes promote osteogenesis","authors":"Feilong Wang, Yunjiao He, Dong Xiang, Xuenan Liu, Fan Yang, Yulin Hou, Weiliang Wu, Dandan Xia, Yongxiang Xu, Yunsong Liu","doi":"10.1016/j.jma.2025.02.008","DOIUrl":"https://doi.org/10.1016/j.jma.2025.02.008","url":null,"abstract":"Guided bone regeneration (GBR) membranes are extensively utilized in dental implantation. However, the existing GBR membranes showed insufficient space-maintaining capability and poor bone promoting ability, affecting the effectiveness of clinical bone augmentation, which in turn resulted in poor implant outcomes and even failure. In this study, we designed a novel magnesium reinforced sandwich structured composite membrane, consisting of an inner magnesium scaffold and a PLGA/collagen hybrid (mixture of poly(lactic-co-glycolic acid) and collagen) top and bottom layer. The magnesium scaffold provided mechanical support and released Mg<sup>2+</sup> to enhance osteogenesis. The PLGA/collagen hybrid regulated membrane degradation and improved biocompatibility, promoting cell adhesion and proliferation (<em>P</em> < 0.05). The PLGA/collagen hybrid regulated the release of magnesium ions, such that the MgP10C (mass ratios of PLGA and collagen =100:10) group showed the best in vitro osteogenic effect. Further mechanism exploration confirmed that MgP10C membranes significantly enhanced bone defect repair via the MAPK/ERK 1/2 pathway by the Mg<sup>2+</sup> released from the composite membranes. In rat calvarial defect and rabbit alveolar defect model (<em>P</em> < 0.05), the in vivo osteogenic effect of the MgP10C group was superior to that of other groups. Finite element analysis models validated the support effect of composite membranes, demonstrating lower stress and a significant reduction in strain on the bone graft in the MgP10C group. In conclusion, the magnesium-reinforced sandwich structure composite membrane, with its space-maintaining properties and osteoinductive activity, represents a new strategy for GBR and enhancing osteogenic potential that meets directly clinical needs.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"284 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143560724","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

Unraveling electrochemical performance of magnesium vanadate-based nanostructures as advanced cathodes for rechargeable aqueous zinc-ion batteries 钒酸镁基纳米结构作为可充电水性锌离子电池先进阴极的电化学性能研究

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-05 DOI: 10.1016/j.jma.2025.02.014

R. Shanthappa, Ashok Kumar Kakarla, Hari Bandi, Wasim Akram Syed, Jae Su Yu

{"title":"Unraveling electrochemical performance of magnesium vanadate-based nanostructures as advanced cathodes for rechargeable aqueous zinc-ion batteries","authors":"R. Shanthappa, Ashok Kumar Kakarla, Hari Bandi, Wasim Akram Syed, Jae Su Yu","doi":"10.1016/j.jma.2025.02.014","DOIUrl":"https://doi.org/10.1016/j.jma.2025.02.014","url":null,"abstract":"High-performance aqueous zinc (Zn)-ion batteries (AZIBs) have emerged as one of the greatest favorable candidates for next-generation energy storage systems because of their low cost, sustainability, high safety, and eco-friendliness. In this report, we prepared magnesium vanadate (MgVO)-based nanostructures by a facile single-step solvothermal method with varying experimental reaction times (1, 3, and 6 h) and investigated the effect of the reaction time on the morphology and layered structure for MgVO-based compounds. The newly prepared MgVO-1 h, MgVO-3 h and MgVO-6 h samples were used as cathode materials for AZIBs. Compared to the MgVO-1 h and MgVO-6 h cathodes, the MgVO-3 h cathode showed a higher specific capacity of 492.74 mA h g<sup>-1</sup> at 1 A g<sup>-1</sup> over 500 cycles and excellent rate behavior (291.58 mA h g<sup>-1</sup> at 3.75 A g<sup>-1</sup>) with high cycling stability (116 %) over 2000 cycles at 5 A g<sup>-1</sup>. Moreover, the MgVO-3 h electrode exhibited good electrochemical performance owing to its fast Zn-ion diffusion kinetics. Additionally, various ex-situ analyses confirmed that the MgVO-3 h cathode displayed excellent insertion/extraction of Zn<sup>2+</sup> ions during charge and discharge processes. This study offers an efficient method for the synthesis of nanostructured MgVO-based cathode materials for high-performance AZIBs.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546291","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

Achieving the strength and ductility synergy in the AlN/ZK60 Mg matrix composite with the bimodal structure 实现双峰结构AlN/ zk60mg基复合材料强度与延性的协同

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-03 DOI: 10.1016/j.jma.2025.01.020

Sinuo Xu, Chaoyang Sun, Hongxiang Li, Boyu Liu, Yinghao Feng, Chunhui Wang, Jingchen Liu

{"title":"Achieving the strength and ductility synergy in the AlN/ZK60 Mg matrix composite with the bimodal structure","authors":"Sinuo Xu, Chaoyang Sun, Hongxiang Li, Boyu Liu, Yinghao Feng, Chunhui Wang, Jingchen Liu","doi":"10.1016/j.jma.2025.01.020","DOIUrl":"https://doi.org/10.1016/j.jma.2025.01.020","url":null,"abstract":"Overcoming the strength and ductility trade-off is conducive to expanding the application prospects of the Mg matrix composites. A new approach of using the master alloy containing particulate reinforcements to achieve the strength and ductility synergy in the Mg matrix composites was proposed, which can induce the grain size bimodal structure by regulating the dynamic recrystallization (DRX). Specifically, a novel AlN-Al master alloy was prepared via powder metallurgy to fabricate the AlN/ZK60 composite, and the effects of adding the AlN-Al master alloy on microstructure evolution related to the strength and ductility synergy in the composite were thoughtfully investigated, involving precipitation, grain size, and DRX behavior. The reaction between the Al in the master alloy and the Zr in the ZK60 Mg alloy suppressed the grain refinement, and the coarse grains were further formed after the solution treatment on the as-cast composite. Subsequently, deformation heterogeneity between the AlN and Mg matrix during the hot extrusion induced discontinuous dynamic recrystallization (DDRX) and promoted fine grain fraction. The combination formed the bimodal structure in the AlN/ZK60 composite, and coarse and fine grains acted as hard and soft zones, respectively, during the room temperature deformation. The hard zone was enhanced by the basal texture strengthening, and the ductility was improved due to the promotion of the basal 〈a〉 slipping in the soft zone, jointly leading to the strength and ductility synergy in the AlN/ZK60 composite for the ultimate tensile strength increased by ∼7.4 % while maintaining the same elongation compared with the ZK60 Mg alloy.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"105 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532567","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

Clarifying the adverse effect of secondary phase on the tribological property of Mg alloy 澄清次生相对镁合金摩擦学性能的不利影响

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-03 DOI: 10.1016/j.jma.2025.02.003

Jie Li, Ting Zou, Junjie Yang, Helong Yu, Peng Zhang, Xiaochao Ji, Xin Zhao, Zhiyong Yan, Wei Li

{"title":"Clarifying the adverse effect of secondary phase on the tribological property of Mg alloy","authors":"Jie Li, Ting Zou, Junjie Yang, Helong Yu, Peng Zhang, Xiaochao Ji, Xin Zhao, Zhiyong Yan, Wei Li","doi":"10.1016/j.jma.2025.02.003","DOIUrl":"https://doi.org/10.1016/j.jma.2025.02.003","url":null,"abstract":"Introduction of hard particles is considered an effective approach to improve alloy wear resistances. However, the wear resistances of Mg alloys could be deteriorated by increasing the hard particle content in many researches. To reveal the underlying negative effect of precipitate on the wear resistance, the wear behaviors of three AZ-Mg alloys (precipitate contents: AZ31: 2.1 %, AZ61: 3.8 %, AZ91: 5.0 %) at the axial loads of 3 and 15 N were investigated. The results indicated that although wear volume of the AZ-Mg alloys decreased with the increasing Mg<sub>17</sub>Al<sub>12</sub> content at 3 N (0.30→0.24→0.20 µm<sup>3</sup>) and 15 N (1.04→0.88→0.85 µm<sup>3</sup>), the relative wear resistances of AZ61 and AZ91 to AZ31 decreased with increasing load (AZ61: 1.25→1.17, AZ91: 1.50→1.22) and the reduction was proportional to the precipitates content (AZ61:7 %, AZ91:28 %). That is because the wear volume of AZ-Mg was mainly attributed to micro-cutting, which was negatively correlated with the precipitate content and tribolayer hardness. However, the wear hardening ability of AZ-Mg alloys was weakened by precipitate for its inhibition on the formation of mechanical twins that the precursors for the tribolayer. Moreover, the inhibition of the precipitate on tribolayer could be amplified by the load, resulting in an increase in tribolayer hardness at 3 N (AZ31: 0.94, AZ61: 1.03, AZ91: 1.10 GPa) but a decrease at 15 N (AZ31: 1.77, AZ61: 1.73, AZ91: 1.62 GPa). Therefore, the formation of twin was inhibited by precipitates, which is detrimental to the wear resistance of Mg alloys. That means the wear resistance could be enhanced by promoting twin formation, which provides a new concept for the design of wear-resistant Mg alloys.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"45 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532565","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

Mechanical behavior of SiC reinforced ZA63 Mg matrix composites: Experiments and 3D finite element modelling 碳化硅增强ZA63镁基复合材料的力学行为：实验和 3D 有限元建模

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-01 DOI: 10.1016/j.jma.2024.03.027

Chong Wang , Zelong Du , Enyu Guo , Shuying Bai , Zongning Chen , Huijun Kang , Guohao Du , Yanling Xue , Tongmin Wang

{"title":"Mechanical behavior of SiC reinforced ZA63 Mg matrix composites: Experiments and 3D finite element modelling","authors":"Chong Wang , Zelong Du , Enyu Guo , Shuying Bai , Zongning Chen , Huijun Kang , Guohao Du , Yanling Xue , Tongmin Wang","doi":"10.1016/j.jma.2024.03.027","DOIUrl":"10.1016/j.jma.2024.03.027","url":null,"abstract":"<div><div>In this work, the microstructure evolution and mechanical behavior of extruded SiC/ZA63 Mg matrix composites are investigated via combined experimental study and three-dimensional finite element modelling (3D FEM) based on the actual 3D microstructure achieved by synchrotron tomography. The results show that the average grain size of composite increases from 0.57 µm of 8 µm-SiC/ZA63 to 8.73 µm of 50 µm-SiC/ZA63. The type of texture transforms from the typical fiber texture in 8 µm-SiC/ZA63 to intense basal texture in 50 µm-SiC/ZA63 composite and the intensity of texture increases sharply with increase of SiC particle size. The dynamic recrystallization (DRX) mechanism is also changed with increasing SiC particle size. Experimental and simulation results verify that the strength and elongation both decrease with increase of SiC particle size. The 8 µm-SiC/ZA63 composite possesses the optimal mechanical property with yield strength (YS) of 383 MPa, ultimate tensile strength (UTS) of 424 MPa and elongation of 6.3%. The outstanding mechanical property is attributed to the ultrafine grain size, high-density precipitates and dislocation, good loading transfer effect and the interface bonding between SiC and matrix, as well as the weakened basal texture. The simulation results reveal that the micro-cracks tend to initiate at the interface between SiC and matrix, and then propagate along the interface between particle and Mg matrix or at the high strain and stress regions, and further connect with other micro-cracks. The main fracture mechanism in 8 µm-SiC/ZA63 composite is ductile damage of matrix and interfacial debonding. With the increase of particle size, interface strength and particle strength decrease, and interface debonding and particle rupture become the main fracture mechanism in the 30 µm- and 50 µm-SiC/ZA63 composites.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 3","pages":"Pages 1294-1309"},"PeriodicalIF":15.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140769221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The growth behavior and performance of microarc oxidation coating on AZ91/Ti composite: Influence of Ti-reinforcement phase and electrolyte AZ91/Ti 复合材料微弧氧化涂层的生长行为和性能：钛强化相和电解质的影响

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-01 DOI: 10.1016/j.jma.2024.04.023

Jinchao Jiao , Yongrui Gu , Jin Zhang , Yong Lian , Xintao Li , Kaihong Zheng , Fusheng Pan

{"title":"The growth behavior and performance of microarc oxidation coating on AZ91/Ti composite: Influence of Ti-reinforcement phase and electrolyte","authors":"Jinchao Jiao , Yongrui Gu , Jin Zhang , Yong Lian , Xintao Li , Kaihong Zheng , Fusheng Pan","doi":"10.1016/j.jma.2024.04.023","DOIUrl":"10.1016/j.jma.2024.04.023","url":null,"abstract":"<div><div>Magnesium matrix composites with both high strength and ductility have been achieved by introducing pure Ti particles. However, the properties of the surfaces of the composites need to be improved by surface technology, such as micro-arc oxidation (MAO). In this study, we investigated the influence of the Ti-reinforcement phase on coating growth and evolution by subjecting both AZ91 alloy and AZ91/Ti composite to MAO treatment using silicate-based and phosphate-based electrolytes. Results revealed that the Ti-reinforcement phase influenced the MAO process, altering discharge behavior, and leading to a decreased cell voltage. The vigorous discharge of the Ti-reinforcement phase induced the formation of coating discharge channels, concurrently dissolving and oxidizing Ti-reinforcement to produce a composite ceramic coating with TiO<sub>2</sub>. The MAO coating on the AZ91/Ti composite exhibited a dark blue macromorphology and distinctive local micromorphological anomalies. In silicate electrolyte, a “volcano-like” localized morphology centered on the discharge channel emerged. In contrast, treatment in phosphate-based electrolyte resulted in a coating morphology similar to typical porous ceramic coatings, with visible radial discharge micropores at the reinforcement phase location. Compared to the AZ91 alloy, the coating on the AZ91/Ti composite exhibited lower thickness and higher porosity. MAO treatment reduced the self-corrosion current density of the AZ91/Ti surface by two orders of magnitude. The silicate coating demonstrated better corrosion resistance than the phosphate coating, attributed to its lower porosity. The formation mechanism of MAO coatings on AZ91/Ti composites in phosphate-based and silicate-based electrolytes was proposed.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 3","pages":"Pages 1160-1175"},"PeriodicalIF":15.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141047673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding pyramidal slip-induced deformation bands and dynamic recrystallization in AZWX3100 magnesium alloy AZWX3100镁合金锥体滑移诱导变形带及动态再结晶研究

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-03-01 DOI: 10.1016/j.jma.2025.02.013

Risheng Pei, Fatim-Zahra Mouhib, Mattis Seehaus, Simon Arnoldi, Pei-Ling Sun, Talal Al-Samman

{"title":"Understanding pyramidal slip-induced deformation bands and dynamic recrystallization in AZWX3100 magnesium alloy","authors":"Risheng Pei, Fatim-Zahra Mouhib, Mattis Seehaus, Simon Arnoldi, Pei-Ling Sun, Talal Al-Samman","doi":"10.1016/j.jma.2025.02.013","DOIUrl":"10.1016/j.jma.2025.02.013","url":null,"abstract":"<div><div>Dynamic recrystallization (DRX) in inhomogeneous deformation zones, such as grain boundaries, shear bands, and deformation bands, is critical for texture modification in magnesium alloys during deformation at elevated temperatures. This study investigates the DRX mechanisms in AZWX3100 magnesium alloy under plane strain compression at 200 °C. Microstructural analysis revealed necklace-type DRX accompanied by evidence of local grain boundary bulging. Additionally, ribbons of recrystallized grains were observed within fine deformation bands, aligned with theoretical pyramidal I and II slip traces derived from the matrix. The distribution of local misorientation within the deformed microstructure demonstrated a clear association between deformation bands and localized strain. Dislocation analysis of lamellar specimens extracted from two pyramidal slip bands revealed <<em>c</em> + <em>a</em>> dislocations, indicating a connection between <<em>c</em> + <em>a</em>> slip activation and the formation of deformation bands. Crystal plasticity simulations suggest that the orientation of deformation bands is responsible for the unique recrystallization texture of the DRX grains within these bands. The texture characteristics imply a progressive, glide-induced DRX mechanism. A fundamental understanding of the role of deformation bands in texture modification can facilitate future alloy and process design.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 3","pages":"Pages 1088-1098"},"PeriodicalIF":15.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143560942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0