Influence of Aging Treatment on the Microstructure and High Temperature Mechanical Properties for 15Cr-15Ni Titanium-modified Austenitic Stainless Steel in 20% Cold-worked Condition

IMR OpenIR

	Influence of Aging Treatment on the Microstructure and High Temperature Mechanical Properties for 15Cr-15Ni Titanium-modified Austenitic Stainless Steel in 20% Cold-worked Condition
	Wang Zhinan 1; Liang Tian 1; Zhang Long 1; Du Aibing 2; Gao Ming 1; Ma Yingche 1; Liu Kui 1
通讯作者	Liang Tian(tliang@imr.ac.cn)
	2018-11-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	47 期号:11 页码:3504-3511
摘要	Titanium-stabilized 15Cr-15Ni austenitic stainless steel in 20% cold-worked condition is considered as a promising candidate high temperature structural material for core components in liquid metal-cooled fast reactors (LMFR). Microstructure and high temperature mechanical properties of the as cold-worked alloy and the ones with different aging treatments were investigated by metallographic microscope, scanning and transmission electron microscope, and tensile testing machine. The results demonstrate that the recovery takes place when the alloy is aged at 550 degrees C for 336 h. The emergence of twins is attributed to dislocations movement. When the aging temperature increases to 650 and 750 degrees C, the amount of twins are reduced because of alloys' further recovery. Sigma phase precipitates from austenitic matrix along grain boundaries when alloys are aged at 650 similar to 750 degrees C for 336 h. The amount and size of Sigma phase increase with the increase in aging temperature. Because of the grain boundary strengthening, alloys aged at 550 degrees C have slightly higher yield strength and ultimate tensile strength than the as cold-worked alloy. The high temperature yield strength and ultimate tensile strength decrease significantly, while plasticity increases observably at the aging temperature of 650 and 750 degrees C.
关键词	titanium-stabilized 15Cr-15Ni austenitic stainless steel aging treatment high temperature tension Sigma phase
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000452694200039
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：1[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/321006/130731
专题	中国科学院金属研究所
通讯作者	Liang Tian
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 2.China Inst Atom Energy, Beijing 102413, Peoples R China
推荐引用方式 GB/T 7714	Wang Zhinan,Liang Tian,Zhang Long,et al. Influence of Aging Treatment on the Microstructure and High Temperature Mechanical Properties for 15Cr-15Ni Titanium-modified Austenitic Stainless Steel in 20% Cold-worked Condition[J]. RARE METAL MATERIALS AND ENGINEERING,2018,47(11):3504-3511.
APA	Wang Zhinan.,Liang Tian.,Zhang Long.,Du Aibing.,Gao Ming.,...&Liu Kui.(2018).Influence of Aging Treatment on the Microstructure and High Temperature Mechanical Properties for 15Cr-15Ni Titanium-modified Austenitic Stainless Steel in 20% Cold-worked Condition.RARE METAL MATERIALS AND ENGINEERING,47(11),3504-3511.
MLA	Wang Zhinan,et al."Influence of Aging Treatment on the Microstructure and High Temperature Mechanical Properties for 15Cr-15Ni Titanium-modified Austenitic Stainless Steel in 20% Cold-worked Condition".RARE METAL MATERIALS AND ENGINEERING 47.11(2018):3504-3511.