| Effect of Temperature on Reheat Cracking Susceptibility of Super304H Austenitic Stainless Steel Weld Metal | |
| Xiao Xiaopeng1,2; Dong Wenchao1; Li Dianzhong1; Li Yiyi1,3; Lu Shanping1 | |
| Corresponding Author | Lu Shanping(shplu@imr.ac.cn) |
| 2023-07-01 | |
| Source Publication | RARE METAL MATERIALS AND ENGINEERING
 |
| ISSN | 1875-5372 |
| Volume | 52Issue:7Pages:2444-2452 |
| Abstract | Super304H austenitic stainless steel has been widely used in superheater and reheater pipes of the ultra-supercritical thermal power unit boilers. During long-term thermal exposure, reheat cracking is prone to occur at the assembly sites of the pipeline weld joint. This study systematically studied the effect of temperature on the reheat cracking susceptibility of Super304H austenitic stainless steel weld metal by a pre-compressed CT specimen method. The results show that the time required for the weld metal to generate cracks at 650 degrees C is shorter than that of the weld metal at 600 degrees C, leading to a higher reheat cracking susceptibility. The main reason for this phenomenon is that the grain boundary strength decays faster with time and the stress relaxation rate is higher at 650 degrees C, while the effect of intragranular strengthening difference at different temperatures is negligible. |
| Keyword | reheat cracking temperature austenitic stainless steel weld metal grain boundary strength |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:001056254200013 |
| Publisher | NORTHWEST INST NONFERROUS METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/179282 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lu Shanping |
| Affiliation | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 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, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Xiao Xiaopeng,Dong Wenchao,Li Dianzhong,et al. Effect of Temperature on Reheat Cracking Susceptibility of Super304H Austenitic Stainless Steel Weld Metal[J]. RARE METAL MATERIALS AND ENGINEERING,2023,52(7):2444-2452. |
| APA | Xiao Xiaopeng,Dong Wenchao,Li Dianzhong,Li Yiyi,&Lu Shanping.(2023).Effect of Temperature on Reheat Cracking Susceptibility of Super304H Austenitic Stainless Steel Weld Metal.RARE METAL MATERIALS AND ENGINEERING,52(7),2444-2452. |
| MLA | Xiao Xiaopeng,et al."Effect of Temperature on Reheat Cracking Susceptibility of Super304H Austenitic Stainless Steel Weld Metal".RARE METAL MATERIALS AND ENGINEERING 52.7(2023):2444-2452. |
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