Homogenization temperature dependent microstructural evolution and mechanical properties in a Nb-stabilized cast austenitic stainless steel

doi:10.1016/j.matchar.2022.112384

IMR OpenIR

	Homogenization temperature dependent microstructural evolution and mechanical properties in a Nb-stabilized cast austenitic stainless steel
	Xie, Ang 1,2,3; Chen, Shenghu 1,3; Wu, Yang 1,2,3; Jiang, Haichang 1,3; Rong, Lijian 1,3
通讯作者	Chen, Shenghu(chensh@imr.ac.cn) ; Rong, Lijian(ljrong@imr.ac.cn)
	2022-12-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	194 页码:12
摘要	A Nb-stabilized cast austenitic stainless steel is processed by homogenization treatments at 1050 C, 1150 C, and 1250 C respectively to investigate microstructure dependent deformation behaviors and mechanical properties. Homogenization treatment at 1050 C could not change the size of primary NbC, while significant dissolution of primary NbC destroys the network connectivity after homogenization treatments at temperatures above 1150 C. Meanwhile, dissolution of NbC will increase C and Nb content in austenite matrix, leading to an increase in SFE. Nucleation of microcracks within NbC at the initial stage of deformation is caused by plastic strain in-compatibility at the NbC/gamma interface. Fast crack propagation along the continuous network of primary NbC leads to premature fracture at a lower stress level, and resultant lower ultimate tensile strength and elongation in as -cast and 1050-H samples. A higher SFE reduces the susceptibility to localization of deformation and crack propagation along the discrete primary NbC is suppressed, resulting in an obvious improvement in the ultimate tensile strength and elongation in 1150-H and 1250-H samples.
关键词	Austenitic stainless steel Niobium carbide Homogenization Stacking fault energy Mechanical properties
资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; LingChuang Research Project of China National Nuclear Corporation ; CNNC Science Fund for Talented Young Scholars
DOI	10.1016/j.matchar.2022.112384
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51871218] ; Youth Innovation Promotion Association, CAS[2018227] ; LingChuang Research Project of China National Nuclear Corporation ; CNNC Science Fund for Talented Young Scholars
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:000930548800003
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：19[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/321006/175146
专题	中国科学院金属研究所
通讯作者	Chen, Shenghu; Rong, Lijian
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Xie, Ang,Chen, Shenghu,Wu, Yang,et al. Homogenization temperature dependent microstructural evolution and mechanical properties in a Nb-stabilized cast austenitic stainless steel[J]. MATERIALS CHARACTERIZATION,2022,194:12.
APA	Xie, Ang,Chen, Shenghu,Wu, Yang,Jiang, Haichang,&Rong, Lijian.(2022).Homogenization temperature dependent microstructural evolution and mechanical properties in a Nb-stabilized cast austenitic stainless steel.MATERIALS CHARACTERIZATION,194,12.
MLA	Xie, Ang,et al."Homogenization temperature dependent microstructural evolution and mechanical properties in a Nb-stabilized cast austenitic stainless steel".MATERIALS CHARACTERIZATION 194(2022):12.