Investigation of the evolution of retained austenite in Fe-13%Cr-4%Ni martensitic stainless steel during intercritical tempering

IMR OpenIR

	Investigation of the evolution of retained austenite in Fe-13%Cr-4%Ni martensitic stainless steel during intercritical tempering
	Zhang, Shenghua; Wang, Pei; Li, Dianzhong; Li, Yiyi; pwang@imr.ac.cn
	2015
发表期刊	MATERIALS & DESIGN
ISSN	0261-3069
卷号	84 页码:385-394
摘要	The microstructure and amount of retained austenite (the austenite remained at room temperature) evolved in Fe-13%Cr-4%Ni martensitic stainless steel during intercritical tempering at 620 degrees C have been investigated. The amount of retained austenite showed a parabolic trend with increase in tempering time, which can be attributed to the gradual decrease in the thermal stability of the reversed austenite (the austenite formed at high temperature). The influences of chemical composition, morphology of reversed austenite, and mechanical constraints originating from tempered martensite matrix on the thermal stability have been discussed. The precipitation and growth of M23C6 in reversed austenite dilute the carbon concentration in reversed austenite. The spheroidization of lathy reversed austenite during tempering decreases the interfacial energy barrier to the phase transformation of reversed austenite to martensite. Furthermore, the decrease in the strength of martensite matrix lowers the strain energy associated with the transformation of reversed austenite to martensite. All these factors during tempering weaken the thermal stability of reversed austenite and facilitate the phase transformation of reversed austenite to martensite during the cooling step of intercritical tempering. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属	[zhang, shenghua ; wang, pei ; li, dianzhong ; li, yiyi] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
关键词	Retained Austenite Intercritical Tempering Fe-13%cr-4%ni Steel Thermal Stability Mechanical Constraint
资助者	National Science Foundation of China [51201167]; Youth Innovation Promotion Association Chinese Academy of Sciences
收录类别	sci
语种	英语
WOS记录号	WOS:000361147600034
引用统计	被引频次：88[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/321006/74930
专题	中国科学院金属研究所
通讯作者	pwang@imr.ac.cn
推荐引用方式 GB/T 7714	Zhang, Shenghua,Wang, Pei,Li, Dianzhong,et al. Investigation of the evolution of retained austenite in Fe-13%Cr-4%Ni martensitic stainless steel during intercritical tempering[J]. MATERIALS & DESIGN,2015,84:385-394.
APA	Zhang, Shenghua,Wang, Pei,Li, Dianzhong,Li, Yiyi,&pwang@imr.ac.cn.(2015).Investigation of the evolution of retained austenite in Fe-13%Cr-4%Ni martensitic stainless steel during intercritical tempering.MATERIALS & DESIGN,84,385-394.
MLA	Zhang, Shenghua,et al."Investigation of the evolution of retained austenite in Fe-13%Cr-4%Ni martensitic stainless steel during intercritical tempering".MATERIALS & DESIGN 84(2015):385-394.