Softening mechanism and failure behavior of 9Cr oxide dispersion strengthened steel resistance spot welded joint
文献类型：期刊论文
| 作者 | Jia, Xin1,2,3; Wei, Shitong1,3; Lu, Shanping3 |
| 刊名 | JOURNAL OF MANUFACTURING PROCESSES
 |
| 出版日期 | 2024-05-30 |
| 卷号 | 118页码:331-340 |
| 关键词 | Oxide dispersion strengthened steel Resistance spot welding Softening Reliability of welded joints |
| ISSN号 | 1526-6125 |
| DOI | 10.1016/j.jmapro.2024.03.062 |
| 通讯作者 | Wei, Shitong(stwei@imr.ac.cn) ; Lu, Shanping(shplu@imr.ac.cn) |
| 英文摘要 | Oxide dispersion strengthened (ODS) steel is one of the most promising materials for nuclear applications. However, there are fewer studies on the spot welding of ODS steel, and the softening mechanism of ODS steel resistance spot welded joint is unclear. The microstructural features of the ODS resistance spot welded joint was characterized to analyze the softening mechanism. The failure behavior and tensile shear performance were studied combined with finite element simulation. The results showed that the fusion boundary has the lowest hardness and the softening zone is divided into fusion zone(FZ) softening and heat affected zone(HAZ) softening according to different location in the joint. In FZ softening, the softening is mainly caused by the presence of delta-ferrite and fewer oxides as well as lower dislocation density. In HAZ softening, the softening is mainly caused by larger grains, less oxides. There are two types of failure, the fracture initiated at HAZ softening shows a brittle feature, while initiated at FZ softening shows a ductile feature. The softening leads to a reduction in tensile-shear strength. Thus, the control of softening zone is critical to improve the reliability of welded joints. |
| 资助项目 | China National Nuclear Corporation |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001221343500001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | China National Nuclear Corporation |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wei, Shitong; Lu, Shanping |
| 作者单位 | 1.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Xin,Wei, Shitong,Lu, Shanping. Softening mechanism and failure behavior of 9Cr oxide dispersion strengthened steel resistance spot welded joint[J]. JOURNAL OF MANUFACTURING PROCESSES,2024,118:331-340. |
| APA | Jia, Xin,Wei, Shitong,&Lu, Shanping.(2024).Softening mechanism and failure behavior of 9Cr oxide dispersion strengthened steel resistance spot welded joint.JOURNAL OF MANUFACTURING PROCESSES,118,331-340. |
| MLA | Jia, Xin,et al."Softening mechanism and failure behavior of 9Cr oxide dispersion strengthened steel resistance spot welded joint".JOURNAL OF MANUFACTURING PROCESSES 118(2024):331-340. |
入库方式： OAI收割
来源：金属研究所
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