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Evolution of Quasicrystals and Long-Period Stacking Ordered Structures During Severe Plastic Deformation and Mixing of Dissimilar Mg Alloys Upon Friction Stir Welding

文献类型：期刊论文

作者Liang, Meichen1; Zhang, Hao1; Zhang, Lifeng1; Xue, Peng1; Ni, Dingrui1; Wang, Weizhen1; Ma, Zongyi1; Ye, Hengqiang1,2; Yang, Zhiqing1
刊名ACTA METALLURGICA SINICA-ENGLISH LETTERS
出版日期2020-08-14
页码13
关键词Mg alloy Microstructure Phase transformation Severe plastic deformation Mechanical property
ISSN号1006-7191
DOI10.1007/s40195-020-01122-z
通讯作者Yang, Zhiqing(yangzq@imr.ac.cn)
英文摘要Microstructural evolution during severe plastic deformation and mixing of Mg(95.8)Zn(3.6)Gd(0.6)and Mg97Cu1Y2(at%) alloys upon friction stir welding was studied. A laminated onion-ring structure composed of alternative distribution of layers with significantly refined microstructures from different alloys was formed in the stirred zone. Coarse quasicrystals were broken up and dispersed with most of them being transformed into cubic W-phase particles, and thick 18R long-period stacking ordered plates were fractured and transformed into fine 14H-LPSO lamellae in the stirred zone (SZ) experiencing complex material flow under high strain rate. Fine W-phase particles and 14H-LPSO lamellae formed during dissimilar friction stir welding (FSW) usually have no specific orientation relationship with surrounding Mg matrix. Chemical measurements demonstrated occurrence of interdiffusion between dissimilar layers in the SZ. Phase transformation was observed for some particles of quasicrystals and long-period stacking ordered (LPSO) in regions slightly outside the SZ. An ultimate tensile strength of similar to 415 MPa and an elongation to failure of similar to 27.8%, both exceeding those of base materials, were obtained in the SZ, due to microstructural refinement and formation of a laminated structure.
资助项目National Nature Science Foundation of China[51771202] ; National Nature Science Foundation of China[51971225] ; National Nature Science Foundation of China[U1760201] ; Key Research Program of Frontier Science, Chinese Academy of Sciences[QYZDY-SSW-JSC207]
WOS研究方向Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000559682200009
出版者CHINESE ACAD SCIENCES, INST METAL RESEARCH
资助机构National Nature Science Foundation of China ; Key Research Program of Frontier Science, Chinese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/140241]  
专题金属研究所_中国科学院金属研究所
通讯作者Yang, Zhiqing
作者单位1.Chinese Acad Sci, Univ Sci & Technol China, Sch Mat Sci & Engn, Inst Met Res,Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Jihua Lab, Foshan 528251, Peoples R China
推荐引用方式
GB/T 7714		 Liang, Meichen,Zhang, Hao,Zhang, Lifeng,et al. Evolution of Quasicrystals and Long-Period Stacking Ordered Structures During Severe Plastic Deformation and Mixing of Dissimilar Mg Alloys Upon Friction Stir Welding[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:13.
APA Liang, Meichen.,Zhang, Hao.,Zhang, Lifeng.,Xue, Peng.,Ni, Dingrui.,...&Yang, Zhiqing.(2020).Evolution of Quasicrystals and Long-Period Stacking Ordered Structures During Severe Plastic Deformation and Mixing of Dissimilar Mg Alloys Upon Friction Stir Welding.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13.
MLA Liang, Meichen,et al."Evolution of Quasicrystals and Long-Period Stacking Ordered Structures During Severe Plastic Deformation and Mixing of Dissimilar Mg Alloys Upon Friction Stir Welding".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):13.

入库方式： OAI收割

来源：金属研究所

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