Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy

doi:10.1002/adem.202000583

IMR OpenIR

	Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy
	Cui, Jie 1,2; Luo, Tianjiao 2; Wang, Cong 1,2; Li, Yingju 2; Feng, Xiaohui 2; Huang, Qiuyan 2; Yang, Yuansheng 2
通讯作者	Yang, Yuansheng(ysyang@imr.ac.cn)
	2020-10-09
发表期刊	ADVANCED ENGINEERING MATERIALS
ISSN	1438-1656
页码	8
摘要	The 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.
关键词	grain refinement magnesium alloy microsegregation quasi-crystalline phase subrapid solidification
资助者	National Key Research and Development Program of China
DOI	10.1002/adem.202000583
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFB0103904]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000579286800001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：6[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/321006/140935
专题	中国科学院金属研究所
通讯作者	Yang, Yuansheng
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 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.