High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austenitic Stainless Steel

doi:10.1007/s40195-020-01076-2

IMR OpenIR

	High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austenitic Stainless Steel
	Hu, Guodong 1,2,3,4; Wang, Pei 1; Li, Dianzhong 1; Li, Yiyi 1
通讯作者	Wang, Pei(pwang@imr.ac.cn)
	2020-06-23
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	11
摘要	In this study, tensile behavior of Nb-containing 25Cr-20Ni austenitic stainless steels composed of coarse or fine grains has been investigated at temperatures ranging from room temperature to 900 degrees C. Results show that the tensile strength of fine-grained specimens decreases faster than that of coarse-grained specimens, as the test temperature increases from 600 degrees C to 800 degrees C. The rapidly decreasing tensile strength is attributed to the enhanced dynamic recovery and recrystallization, because additional slip systems are activated, and cross-slipping is accelerated during deformation in fine-grained specimens. After tensile testing at 700-900 degrees C, sigma phases are formed concurrently with dynamic recrystallization in fine-grained specimens. The precipitation of sigma phases is induced by simultaneous recrystallization as the diffusion of alloying elements is accelerated during the recrystallization process. Additionally, the minimum ductility is observed in coarse-grained specimens at 800 degrees C, which is caused by the formation ofM(23)C(6)precipitates at the grain boundaries.
关键词	Austenitic stainless steels High-temperature tensile properties Grain size Precipitates
资助者	Youth Innovation Promotion Association, Chinese Academy of Sciences ; LiaoNing Revitalization Talents Program ; Guangdong Innovative and Entrepreneurial Research Team Program ; Guangdong Basic and Applied Basic Research Foundation
DOI	10.1007/s40195-020-01076-2
收录类别	SCI
语种	英语
资助项目	Youth Innovation Promotion Association, Chinese Academy of Sciences[2013126] ; LiaoNing Revitalization Talents Program[XLYC1807022] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06G025] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515110886]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000542515900003
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：9[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/321006/139504
专题	中国科学院金属研究所
通讯作者	Wang, Pei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Ctr Excellence Adv Mat, Dongguan 523808, Peoples R China 4.Songshan Lake Lab Mat Sci, Dongguan 523808, Peoples R China
推荐引用方式 GB/T 7714	Hu, Guodong,Wang, Pei,Li, Dianzhong,et al. High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austenitic Stainless Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:11.
APA	Hu, Guodong,Wang, Pei,Li, Dianzhong,&Li, Yiyi.(2020).High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austenitic Stainless Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,11.
MLA	Hu, Guodong,et al."High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austenitic Stainless Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):11.