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

doi:10.1007/s40195-020-01122-z

IMR OpenIR

	Evolution of Quasicrystals and Long-Period Stacking Ordered Structures During Severe Plastic Deformation and Mixing of Dissimilar Mg Alloys Upon Friction Stir Welding
	Liang, Meichen 1; Zhang, Hao 1; Zhang, Lifeng 1; Xue, Peng 1; Ni, Dingrui 1; Wang, Weizhen 1; Ma, Zongyi 1; Ye, Hengqiang 1,2; Yang, Zhiqing 1
通讯作者	Yang, Zhiqing(yangzq@imr.ac.cn)
	2020-08-14
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	13
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.
关键词	Mg alloy Microstructure Phase transformation Severe plastic deformation Mechanical property
资助者	National Nature Science Foundation of China ; Key Research Program of Frontier Science, Chinese Academy of Sciences
DOI	10.1007/s40195-020-01122-z
收录类别	SCI
语种	英语
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
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000559682200009
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/140244
专题	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.