Microstructural evolution and phase transformation during partial remelting of in-situ Mg2Sip/AM60B composite

doi:10.1016/S1003-6326(16)64262-0

	Microstructural evolution and phase transformation during partial remelting of in-situ Mg2Sip/AM60B composite
	Zhang, Su-qing; Chen, Ti-jun; Cheng, Fa-liang; Li, Lei-liang
刊名	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
	2016-06
卷号	26 期号:6 页码:1564-1573
关键词	magnesium alloy partial remelting thixoforming microstructure evolution phase transformation in-situ composite
ISSN号	1003-6326
DOI	10.1016/S1003-6326(16)64262-0
英文摘要	The microstructural evolution and phase transformations during partial remelting of in-situ Mg2Sip/AM60B composite modified by SiC and Sr were investigated. The results indicate that SiC and Sr are effective for refining primary alpha-Mg grains and Mg2Si particles. After being partially remelted, a semisolid microstructure with small and spheroidal primary alpha-Mg particles can be obtained. The microstructural evolution during partial remelting can be divided into four stages: the initial rapid coarsening, structural separation, spheroidization and final coarsening, which are essentially caused by the phase transformations of beta ->alpha, alpha+beta -> L and alpha -> L, alpha -> L, and alpha -> L and L -> a, respectively. The Mg2Si particles have not obvious effect on the general microstructural evolution steps, but can slower the evolution progress and change the coarsening mechanism. During partial remelting, Mg2Si particles first become blunt and then become spheroidal because of melting of their edges and corners, and finally are coarsened owing to Ostwald ripening.
资助项目	National Basic Research Program of China[G2010CB635106] ; Program for New Century Excellent Talents in University of China[NCET-10-0023]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000379548800012
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33672]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Chen, Ti-jun
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Su-qing,Chen, Ti-jun,Cheng, Fa-liang,et al. Microstructural evolution and phase transformation during partial remelting of in-situ Mg2Sip/AM60B composite[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2016,26(6):1564-1573.
APA	Zhang, Su-qing,Chen, Ti-jun,Cheng, Fa-liang,&Li, Lei-liang.(2016).Microstructural evolution and phase transformation during partial remelting of in-situ Mg2Sip/AM60B composite.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,26(6),1564-1573.
MLA	Zhang, Su-qing,et al."Microstructural evolution and phase transformation during partial remelting of in-situ Mg2Sip/AM60B composite".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 26.6(2016):1564-1573.