Coalescence-dominated microstructure evolution during solidification of 20SiMn steel

doi:10.1007/s42243-019-00311-0

IMR OpenIR

	Coalescence-dominated microstructure evolution during solidification of 20SiMn steel
	Ma, Xiao-ping; Li, Dian-zhong
通讯作者	Ma, Xiao-ping(xpma@imr.ac.cn)
	2020-05-01
发表期刊	JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN	1006-706X
卷号	27 期号:5 页码:506-516
摘要	The evolution of microstructures during the solidification of 20SiMn steel was investigated. The dominant role of coalescence was revealed by analyzing the quenched microstructures and the solute distribution. In the parameter range investigated, including the slow solidification, the fast solidification and the directional solidification, the coalescence can happen at multiple solidification stages and on multi-scales. During the directional solidification, the ternary and fourth dendritic arms coalesce into the secondary dendritic arms, and the secondary dendritic arms further coalesce to produce the cellular crystals. The cellular crystals become coarse through further coalescence. During the non-directional solidification, the initial microstructures are discrete crystals without the dendritic pattern. Both the dendritic arms and dendritic stems appearing in the later solidification stage are produced by the coalescence on multi-scales. The coalescence is more significant in the later solidification stage. The mechanism of coalescence is attributed to different melt compositions in different local domains and the reduction of the interface energy.
关键词	Solidification Microstructure Coalescence Steel Microsegregation
DOI	10.1007/s42243-019-00311-0
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000531155800003
出版者	SPRINGER
引用统计	被引频次：3[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/321006/138779
专题	中国科学院金属研究所
通讯作者	Ma, Xiao-ping
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Ma, Xiao-ping,Li, Dian-zhong. Coalescence-dominated microstructure evolution during solidification of 20SiMn steel[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2020,27(5):506-516.
APA	Ma, Xiao-ping,&Li, Dian-zhong.(2020).Coalescence-dominated microstructure evolution during solidification of 20SiMn steel.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,27(5),506-516.
MLA	Ma, Xiao-ping,et al."Coalescence-dominated microstructure evolution during solidification of 20SiMn steel".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 27.5(2020):506-516.