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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
Liang, Meichen1; Zhang, Hao1; Zhang, Lifeng1; Xue, Peng1; Ni, Dingrui1; Wang, Weizhen1; Ma, Zongyi1; Ye, Hengqiang1,2; Yang, Zhiqing1
Corresponding AuthorYang, Zhiqing(yangzq@imr.ac.cn)
2020-08-14
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages13
AbstractMicrostructural 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.
KeywordMg alloy Microstructure Phase transformation Severe plastic deformation Mechanical property
Funding OrganizationNational Nature Science Foundation of China ; Key Research Program of Frontier Science, Chinese Academy of Sciences
DOI10.1007/s40195-020-01122-z
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000559682200009
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140242
Collection中国科学院金属研究所
Corresponding AuthorYang, Zhiqing
Affiliation1.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
Recommended Citation
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.
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