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Characterization of microstructure and nanoscale phase in Mg-15Gd-1Zn (wt.%) alloy fabricated by rotating magnetic field casting
Chang, Zhiyu1,2; Wu, Yujuan1,2; Heng, Xiangwen1,2; Su, Ning1,2; Zhang, Yu3; Yu, Baoyi4; Zheng, Li4; Shao, Xiaohong5; Peng, Liming1,2
Corresponding AuthorWu, Yujuan(wuyj@sjtu.edu.cn)
2020-12-01
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume170Pages:9
AbstractAn Mg-15Gd-1Zn (GZ151, wt.%) alloy was fabricated by rotating magnetic field (RMF) casting, and the microstructures were compared with those produced by conventional gravity casting (CGC). The results show that the RMF can cause significant dendritic fragmentation and resultant grain refinement of the as-cast alloy. Compared with the CGC, the RMF makes the distribution of secondary eutectic phase-(Mg, Zn)3Gd more uniform, but does not affect the phase types. Furthermore, the RMF contributes to the formations of kinks of long-period stacking ordered (LPSO) structures and c + a dislocations, which originate from the stress and strain caused by Lorenz force. Under the solution-treated condition, the RMF casting alloy presents higher content and larger size of X phases than those of CGC alloy. Interestingly, for the first time, some curved chain-like structures consisting of short rod-like nanoscale phases were found in the grains. The short rod-like nanoscale phase is composed of many gamma' precipitates confined in an elliptical domain.
KeywordMg-Gd-Zn alloy Rotating magnetic field (RMF) Microstructure Long-period stacking order (LPSO) structures Dislocation gamma' precipitate
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
DOI10.1016/j.matchar.2020.110660
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFB0701201] ; National Natural Science Foundation of China[51971130] ; National Natural Science Foundation of China[51771113] ; National Natural Science Foundation of China[51821001]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS IDWOS:000598514700004
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158860
Collection中国科学院金属研究所
Corresponding AuthorWu, Yujuan
Affiliation1.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China
2.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
3.Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
4.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China
5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Chang, Zhiyu,Wu, Yujuan,Heng, Xiangwen,et al. Characterization of microstructure and nanoscale phase in Mg-15Gd-1Zn (wt.%) alloy fabricated by rotating magnetic field casting[J]. MATERIALS CHARACTERIZATION,2020,170:9.
APA Chang, Zhiyu.,Wu, Yujuan.,Heng, Xiangwen.,Su, Ning.,Zhang, Yu.,...&Peng, Liming.(2020).Characterization of microstructure and nanoscale phase in Mg-15Gd-1Zn (wt.%) alloy fabricated by rotating magnetic field casting.MATERIALS CHARACTERIZATION,170,9.
MLA Chang, Zhiyu,et al."Characterization of microstructure and nanoscale phase in Mg-15Gd-1Zn (wt.%) alloy fabricated by rotating magnetic field casting".MATERIALS CHARACTERIZATION 170(2020):9.
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