Effect of melt superheating on the subrapidly solidified microstructure of AISI 304 austenitic stainless steel strip

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	Effect of melt superheating on the subrapidly solidified microstructure of AISI 304 austenitic stainless steel strip
	Ma Jianchao; Yang Yuansheng; Tong Wenhui
通讯作者	Yang Yuansheng(ysyang@imr.ac.cn)
	2007-08-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	43 期号:8 页码:879-882
摘要	The effect of melt superheating on the sub-rapidly solidified microstructure of AISI 304 austenitic stainless steel strip cast by water-cooled copper mould casting was investigated. The results show that the solidified microstructures from surface to center of the as-cast strip are cellular austenite, columnar ferrite dendrite and equiaxed ferrite dendrite, respectively. With the increase of superheating, both the primary arm spacing of cellular austenite and the secondary arm spacing of ferrite dendrite raise, while the delta ferrite fraction decreases. As the melt superheating raises, the supercooling of melt falls, then the cooling rate of melt decreases, resulting in the increase of dendritic arm spacings of austenite and delta ferrite. The decrease of cooling rate also accelerates the transformation from delta ferrite to austenite during the subsequent cooling process after solidification, leading to the reduction of residual delta ferrite fraction.
关键词	stainless steel superheating dendritic arm spacing residual ferrite
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:000249770300018
出版者	SCIENCE CHINA PRESS
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/321006/89942
专题	中国科学院金属研究所
通讯作者	Yang Yuansheng
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma Jianchao,Yang Yuansheng,Tong Wenhui. Effect of melt superheating on the subrapidly solidified microstructure of AISI 304 austenitic stainless steel strip[J]. ACTA METALLURGICA SINICA,2007,43(8):879-882.
APA	Ma Jianchao,Yang Yuansheng,&Tong Wenhui.(2007).Effect of melt superheating on the subrapidly solidified microstructure of AISI 304 austenitic stainless steel strip.ACTA METALLURGICA SINICA,43(8),879-882.
MLA	Ma Jianchao,et al."Effect of melt superheating on the subrapidly solidified microstructure of AISI 304 austenitic stainless steel strip".ACTA METALLURGICA SINICA 43.8(2007):879-882.