Improvement in toughness and ductility of friction stir welded medium-Mn steel joint via post-welding annealing
文献类型：期刊论文
| 作者 | Wang, Y. Q.2; Duan, R. H.2; Hu, J.2; Luo, Z. A.2; Ma, Z. Y.1; Xie, G. M.2 |
| 刊名 | JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 306页码:12 |
| 关键词 | Friction stir welding Medium-Mn steel Intercritical annealing Reversed austenite |
| ISSN号 | 0924-0136 |
| DOI | 10.1016/j.jmatprotec.2022.117621 |
| 通讯作者 | Xie, G. M.(xiegm@ral.neu.edu.cn) |
| 英文摘要 | The medium-Mn steels have a great application potential in the engineering fields due to its excellent strength and toughness. However, the presence of coarse martensite and segregation of Mn in the fusion-welded mediumMn steel joint severely deteriorated toughness and ductility. In this work, 6 mm thick medium-Mn steel plates were joined by friction stir welding, and then were intercritically annealed to enhance the toughness and ductility of the joint. The as-welded nugget zone (NZ) contained lath martensite with low proportion of high angle boundaries (HABs), leading to the joint with lower elongation of 22.5% and the impact energy of 73.6 J/cm(2). However, the as-annealed NZ consisted of ferrite and austenite because partial martensite changed to reversed austenite, while other martensite became ferrite during annealing. In addition, the proportion of HABs in the as-annealed NZ increased obviously. In comparison with as-welded joint, the impact energy and elongation of the as-annealed joint was increased by 70.7% and 44.4%, respectively. The abovementioned excellent mechanical properties were attributed to the high proportion of HABs and a large amount of ultra-fine reversed austenite with high thermal and mechanical stability, which provided a significant transformation induced plasticity effect, obviously inhibiting crack initiation and propagation. This systematic work provided a reference for welding similar materials containing retained austenite. |
| 资助项目 | National Nature Science Foundation of China[51774085] ; Liaoning Province Excellent Youth Foundation[2020-YQ-03] ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University[2020RALKFKT009] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000805771700002 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Nature Science Foundation of China ; Liaoning Province Excellent Youth Foundation ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University |
| 源URL | [http://ir.imr.ac.cn/handle/321006/174092]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xie, G. M. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Northeastern Univ, State Key Lab Rolling & Automat, 3 Wenhua Rd, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Y. Q.,Duan, R. H.,Hu, J.,et al. Improvement in toughness and ductility of friction stir welded medium-Mn steel joint via post-welding annealing[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,2022,306:12. |
| APA | Wang, Y. Q.,Duan, R. H.,Hu, J.,Luo, Z. A.,Ma, Z. Y.,&Xie, G. M..(2022).Improvement in toughness and ductility of friction stir welded medium-Mn steel joint via post-welding annealing.JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,306,12. |
| MLA | Wang, Y. Q.,et al."Improvement in toughness and ductility of friction stir welded medium-Mn steel joint via post-welding annealing".JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 306(2022):12. |
入库方式： OAI收割
来源：金属研究所
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