| Homogenization temperature dependent microstructural evolution and mechanical properties in a Nb-stabilized cast austenitic stainless steel | |
| Xie, Ang1,2,3; Chen, Shenghu1,3; Wu, Yang1,2,3; Jiang, Haichang1,3; Rong, Lijian1,3 | |
| Corresponding Author | Chen, Shenghu(chensh@imr.ac.cn) ; Rong, Lijian(ljrong@imr.ac.cn) |
| 2022-12-01 | |
| Source Publication | MATERIALS CHARACTERIZATION
 |
| ISSN | 1044-5803 |
| Volume | 194Pages:12 |
| Abstract | 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. |
| Keyword | Austenitic stainless steel Niobium carbide Homogenization Stacking fault energy Mechanical properties |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing |
| WOS ID | WOS:000930548800003 |
| Publisher | ELSEVIER SCIENCE INC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/175146 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Chen, Shenghu; Rong, Lijian |
| Affiliation | 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 |
| Recommended Citation 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. |
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