| Evolution mechanisms of microstructure and mechanical properties in a friction stir welded ultrahigh-strength quenching and partitioning steel | |
| Wang, Z. W.1,2; Zhang, J. F.1; Xie, G. M.3; Wu, L. H.1; Zhang, H.1; Xue, P.1; Ni, D. R.1; Xiao, B. L.1; Ma, Z. Y.1 | |
| Corresponding Author | Xue, P.(pxue@imr.ac.cn) |
| 2022-03-10 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 102Pages:213-223 |
| Abstract | Ultrahigh-strength quenching and partitioning (Q&P) steels have attracted strong interests in the auto manufactory, while the comprehensive understanding in the microstructure and mechanical behavior of their welded joints is highly needed to enrich their applications. In the present work, it is designed to make an insight into these imperative conundrums. Equal strength Q&P 1180 steel joints to parent metal were successfully fabricated via friction stir welding (FSW) technique under different parameters. Apparent hardening and softening were observed in stir zone (SZ) and heat-affected zone (HAZ) respectively, whose microstructures strongly depended on the peak temperature and cooling rate during welding. The formation of fresh martensite was the main mechanism for the SZ hardening, while the decomposition of metastable phases played key roles in the microhardness drop of the HAZ. A heat source zone-isothermal phase transition layer model was proposed to clarify the impregnability of the joint strength under parameter variation. The dual-phase structure, nano-carbide particles, tempered initial martensite, and ultrafine-grained ferrite synergistically improved the strain hardening ability of the HAZ, which eventually resulted in the equal strength FSW joints. (c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Ultrahigh-strength Q& P steel Friction stir welding Microstructure Mechanical property Strain hardening |
| Funding Organization | National Natural Science Foundation of China ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| DOI | 10.1016/j.jmst.2021.06.031 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51671190] ; National Natural Science Foundation of China[51901225] ; National Natural Science Foundation of China[51774085] ; National Natural Science Foundation of China[52034005] ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University[2020RALKFKT009] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017236] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000778426500005 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172937 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xue, P. |
| Affiliation | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Z. W.,Zhang, J. F.,Xie, G. M.,et al. Evolution mechanisms of microstructure and mechanical properties in a friction stir welded ultrahigh-strength quenching and partitioning steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,102:213-223. |
| APA | Wang, Z. W..,Zhang, J. F..,Xie, G. M..,Wu, L. H..,Zhang, H..,...&Ma, Z. Y..(2022).Evolution mechanisms of microstructure and mechanical properties in a friction stir welded ultrahigh-strength quenching and partitioning steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,102,213-223. |
| MLA | Wang, Z. W.,et al."Evolution mechanisms of microstructure and mechanical properties in a friction stir welded ultrahigh-strength quenching and partitioning steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 102(2022):213-223. |
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