| Microstructural evolution and stress relaxation cracking mechanism for Super304H austenitic stainless steel weld metal | |
| Xiao, Xiaopeng1,2; Li, Dianzhong1; Li, Yiyi1,3; Lu, Shanping1 | |
| Corresponding Author | Lu, Shanping(shplu@imr.ac.cn) |
| 2022-02-20 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 100Pages:82-90 |
| Abstract | The pre-compressed CT technique was used to quantitatively investigate the formation of stress relaxation cracks under different tensile residual stresses and aging time in Super304H austenitic stainless steel weld metal. The statistical results revealed that intergranular cracks could occur within 2000 h under 650 degrees C when the residual stress was applied with greater than 18 KN pre-compression force. Detailed grain interior and boundary analyses showed that the growth of intragranular Cu-rich particles could induce a strong grain interior, and the intergranular Nb(C, N) carbides were one of the causes to crack under short-term aging time. For long-term aging time conditions, the intergranular M23C6 carbides were more susceptible to crack than intergranular Nb(C, N) carbides. Finally, the mechanism responsible for stress relaxation cracking formation was carefully illustrated for the weld metals after short-term aging and long-term aging, respectively. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Stress relaxation cracking Super304H steel Weld metal Aging treatment Residual stress Precipitates |
| Funding Organization | Shenyang National Laboratory for Materials Science Innovation Projects |
| DOI | 10.1016/j.jmst.2021.06.010 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Shenyang National Laboratory for Materials Science Innovation Projects[L2019R35] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000743264400011 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173297 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lu, Shanping |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Insititute Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Xiao, Xiaopeng,Li, Dianzhong,Li, Yiyi,et al. Microstructural evolution and stress relaxation cracking mechanism for Super304H austenitic stainless steel weld metal[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,100:82-90. |
| APA | Xiao, Xiaopeng,Li, Dianzhong,Li, Yiyi,&Lu, Shanping.(2022).Microstructural evolution and stress relaxation cracking mechanism for Super304H austenitic stainless steel weld metal.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,100,82-90. |
| MLA | Xiao, Xiaopeng,et al."Microstructural evolution and stress relaxation cracking mechanism for Super304H austenitic stainless steel weld metal".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 100(2022):82-90. |
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