| Numerical Investigation on Residual Stresses of the Safe-End/Nozzle Dissimilar Metal Welded Joint in CAP1400 Nuclear Power Plants | |
| Dong, Wen-Chao1; Gao, Dian-Bao2; Lu, Shan-Ping1 | |
| Corresponding Author | Lu, Shan-Ping(shplu@imr.ac.cn) |
| 2019-05-01 | |
| Source Publication | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| ISSN | 1006-7191 |
| Volume | 32Issue:5Pages:618-628 |
| Abstract | The residual stress evolution in a safe-end/nozzle dissimilar metal welded joint of CAP1400 nuclear power plants was investigated in the manufacturing process by finite element simulation. A finite element model, including cladding, buttering, post-weld heat treatment (PWHT) and dissimilar metal multi-pass welding, is developed based on SYSWELD software to investigate the evolution of residual stress in the aforementioned manufacturing process. The results reveal a large tensile axial residual stress, which exists at the weld zone on the inner surface, leads to a high sensitivity to stress corrosion cracking (SCC). PWHT process before dissimilar metal multi-pass welding process has a great influence on the magnitude and distribution of final axial residual stress. The risk of SCC on the inner surface of the pipe will increase if PWHT process is not taken into account. Therefore, such crucial thermal manufacturing process such as cladding, buttering and post-weld heat treatment, besides the multi-pass welding process, should be considered in the numerical model in order to accurately predict the distribution and the magnitude of the residual stress. |
| Keyword | CAP1400 nuclear power plants Nozzle Safe-end Dissimilar metal welding Residual stress |
| Funding Organization | Open-ended Fund of the CAS Key Laboratory of Nuclear Materials and Safety Assessment |
| DOI | 10.1007/s40195-018-0803-8 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Open-ended Fund of the CAS Key Laboratory of Nuclear Materials and Safety Assessment[2015NMSAKF02] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000463780700009 |
| Publisher | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/132983 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lu, Shan-Ping |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 2.China First Heavy Ind, Nucl Power & Petrochem Business Grp, Dalian 116113, Peoples R China |
| Recommended Citation GB/T 7714 | Dong, Wen-Chao,Gao, Dian-Bao,Lu, Shan-Ping. Numerical Investigation on Residual Stresses of the Safe-End/Nozzle Dissimilar Metal Welded Joint in CAP1400 Nuclear Power Plants[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(5):618-628. |
| APA | Dong, Wen-Chao,Gao, Dian-Bao,&Lu, Shan-Ping.(2019).Numerical Investigation on Residual Stresses of the Safe-End/Nozzle Dissimilar Metal Welded Joint in CAP1400 Nuclear Power Plants.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(5),618-628. |
| MLA | Dong, Wen-Chao,et al."Numerical Investigation on Residual Stresses of the Safe-End/Nozzle Dissimilar Metal Welded Joint in CAP1400 Nuclear Power Plants".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.5(2019):618-628. |
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