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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
Corresponding AuthorYang Yuansheng(ysyang@imr.ac.cn)
2007-08-01
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume43Issue:8Pages:879-882
AbstractThe 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.
Keywordstainless steel superheating dendritic arm spacing residual ferrite
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000249770300018
PublisherSCIENCE CHINA PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/89942
Collection中国科学院金属研究所
Corresponding AuthorYang Yuansheng
AffiliationChinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
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.
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