Microstructural evolution and phase transformation during partial remelting of in-situ Mg_2Si_p/AM60B composite

	Microstructural evolution and phase transformation during partial remelting of in-situ Mg_2Si_p/AM60B composite
	Zhang Suqing; Chen Tijun; Cheng Faliang; Li Leiliang
	2016
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	26 期号:6 页码:1564-1573
摘要	The microstructural evolution and phase transformations during partial remelting of in-situ Mg_2Si_p/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 Mg_2Si 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 betaalpha, alpha+betaL and alphaL, alphaL, and alphaL and Lalpha, respectively. The Mg_2Si 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, Mg_2Si particles first become blunt and then become spheroidal because of melting of their edges and corners, and finally are coarsened owing to Ostwald ripening.
关键词	magnesium alloy partial remelting thixoforming microstructure evolution phase transformation in-situ composite
收录类别	CSCD
语种	英语
WOS研究方向	Engineering
WOS类目	ENGINEERING INDUSTRIAL
CSCD记录号	CSCD:5753016
引用统计
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/71669
专题	材料科学与工程学院
作者单位	Lanzhou University of Technology, State Key laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou, Gansu 730050, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Zhang Suqing,Chen Tijun,Cheng Faliang,et al. Microstructural evolution and phase transformation during partial remelting of in-situ Mg_2Si_p/AM60B composite[J]. Transactions of Nonferrous Metals Society of China,2016,26(6):1564-1573.
APA	Zhang Suqing,Chen Tijun,Cheng Faliang,&Li Leiliang.(2016).Microstructural evolution and phase transformation during partial remelting of in-situ Mg_2Si_p/AM60B composite.Transactions of Nonferrous Metals Society of China,26(6),1564-1573.
MLA	Zhang Suqing,et al."Microstructural evolution and phase transformation during partial remelting of in-situ Mg_2Si_p/AM60B composite".Transactions of Nonferrous Metals Society of China 26.6(2016):1564-1573.