Effect of Silicon on Precipitates of High-Silicon Austenitic Stainless Steel

IMR OpenIR

	Effect of Silicon on Precipitates of High-Silicon Austenitic Stainless Steel
	Li Xiaohuan 1; Cui Guowei 1; Chen Sihan 2; Liang Tian 2,3,4; Xing Weiwei 2; Ma Yingche 2; Wang Ping 1; Wu Jinming 3; Li Guobin 4
通讯作者	Liang Tian(tliang@imr.ac.cn)
	2022-08-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	51 期号:8 页码:2769-2776
摘要	The effect of silicon contents (4wt%similar to 8wt%) on microstructure of high-silicon austenitic stainless steel ZeCor was investigated by XRD, TEM and indentation deformation. Results show that increasing Si content leads to the phase constitute change of ZeCor alloy: the microstructure is single-phase austenite (gamma phase) in ZeCor-4wt%Si alloy, gamma phase with a small quantity of sigma-phase in ZeCor-6wt%Si alloy, and as for the ZeCor-8wt%Si alloy, the main precipitations are Cr3Ni5Si2 phase and a bit sigma-phases. In addition, the Cr3Ni5Si2 phase has a higher silicon and nickel content than the sigma-phase. The Cr3Ni5Si2 phase with a micro-hardness HV as high as 7840 MPa is a typical hard and brittle phase, and the precipitation of such phase can greatly increase the micro-hardness of the. matrix in the ZeCor-8wt% Si alloy. The strengthening mechanism of. matrix in ZeCor alloy is as follows: the solid solution strengthening is the main strengthening mechanism in ZeCor-6wt% Si alloy, while the solid solution strengthening of Si and the precipitation strengthening of Cr3Ni5Si2 greatly increase the micro-hardness of the. matrix in ZeCor-8wt%Si alloy, and the Cr3Ni5Si2 phases have a great effect.
关键词	high-silicon austenitic stainless steel silicon content sigma-phase micro-hardness tester Cr3Ni5Si2 phase
资助者	Postdoctoral Research Funding Project of Zhejiang Province
收录类别	SCI
语种	英语
资助项目	Postdoctoral Research Funding Project of Zhejiang Province[ZJ2020017]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000864195300008
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：2[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/321006/176159
专题	中国科学院金属研究所
通讯作者	Liang Tian
作者单位	1.Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 3.Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China 4.Zhejiang Xindeda Special Pipe Ind Co Ltd, Wenzhou 325024, Peoples R China
推荐引用方式 GB/T 7714	Li Xiaohuan,Cui Guowei,Chen Sihan,et al. Effect of Silicon on Precipitates of High-Silicon Austenitic Stainless Steel[J]. RARE METAL MATERIALS AND ENGINEERING,2022,51(8):2769-2776.
APA	Li Xiaohuan.,Cui Guowei.,Chen Sihan.,Liang Tian.,Xing Weiwei.,...&Li Guobin.(2022).Effect of Silicon on Precipitates of High-Silicon Austenitic Stainless Steel.RARE METAL MATERIALS AND ENGINEERING,51(8),2769-2776.
MLA	Li Xiaohuan,et al."Effect of Silicon on Precipitates of High-Silicon Austenitic Stainless Steel".RARE METAL MATERIALS AND ENGINEERING 51.8(2022):2769-2776.