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Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy
Cui, Jie1,2; Luo, Tianjiao2; Wang, Cong1,2; Li, Yingju2; Feng, Xiaohui2; Huang, Qiuyan2; Yang, Yuansheng2
Corresponding AuthorYang, Yuansheng(ysyang@imr.ac.cn)
2020-10-09
Source PublicationADVANCED ENGINEERING MATERIALS
ISSN1438-1656
Pages8
AbstractThe evolution of the microstructure and microsegregation in a new type of Mg-6Al-4Zn-1.2Sn (wt%) cast magnesium alloy solidified at cooling rates from 4.5 x 10(1) degrees C s(-1)to 2.3 x 10(3) degrees C s(-1)is investigated. The results indicate that the secondary dendrite arm spacing and the average grain sizes decrease from 14.3 to 2.9 mu m and from 187 to 78 mu m, respectively, as the cooling rate increases from 4.5 x 10(1) degrees C s(-1)to 2.3 x 10(3) degrees C s(-1). The relationship between the secondary dendrite arm spacing (lambda(2)) and cooling rate (R) is fitted as lambda(2) = 69.7 x R-0.42. When the alloy solidifies in the range of cooling rates, a new quasi-crystalline I phase is formed due to faster solidification. The microsegregation ratios of Al, Zn, and Sn elements decrease significantly with the increase in cooling rate. Compared with the specimen solidified at 4.5 x 10(1) degrees C s(-1), the microsegregation ratios of Al, Zn, and Sn of that solidified at a cooling rate of 2.3 x 10(3) degrees C s(-1)decrease by 37.4%, 45.7%, and 31.6%, respectively.
Keywordgrain refinement magnesium alloy microsegregation quasi-crystalline phase subrapid solidification
Funding OrganizationNational Key Research and Development Program of China
DOI10.1002/adem.202000583
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFB0103904]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000579286800001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140935
Collection中国科学院金属研究所
Corresponding AuthorYang, Yuansheng
Affiliation1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Cui, Jie,Luo, Tianjiao,Wang, Cong,et al. Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy[J]. ADVANCED ENGINEERING MATERIALS,2020:8.
APA Cui, Jie.,Luo, Tianjiao.,Wang, Cong.,Li, Yingju.,Feng, Xiaohui.,...&Yang, Yuansheng.(2020).Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy.ADVANCED ENGINEERING MATERIALS,8.
MLA Cui, Jie,et al."Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy".ADVANCED ENGINEERING MATERIALS (2020):8.
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