Bainite nucleation mechanism and mechanical properties in low carbon bainite deposited metals with different nickel additions
文献类型：期刊论文
| 作者 | Liu, Jingwu1,2; Wei, Shitong1; Lu, Shanping1 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 857页码:10 |
| ISSN号 | 0921-5093 |
| 关键词 | Nickel Low-temperature toughness Nucleation method Welding |
| DOI | 10.1016/j.msea.2022.144036 |
| 通讯作者 | Lu, Shanping(shplu@imr.ac.cn) |
| 英文摘要 | Exploring the transformation mechanism of bainite is necessary to achieve the matching of high-strength and accepted damage tolerance for low carbon bainite deposited metals. In this work, the effect of Ni content on the bainite transformation mechanism and mechanical properties has been investigated systematically with Ni contents change from 4 wt. % to 9 wt. %. Scanning electron microscope, transmission electron microscope, and electron backscatter diffraction were used for the characterization of the microstructure. Results indicated that the nucleation method of bainite ferrite (BF) laths changed from autocatalytic nucleation to classical nucleation when the Ni content exceeded 5.5%. The deposited metals with BF laths nucleated by autocatalysis had excellent combinations of strength and toughness while the toughness severely deteriorated as the classical nucleation replaced the autocatalytic nucleation. The presence of autocatalytic nucleation resulted in the refinement of microstructure, and the density of high-angle grain boundaries had been improved effectively. In particular, apparent variant selection tendency in microstructure occurred accompanied by the disappearance of autocat-alytic nucleation. Moreover, the strong variant selection tendency resulted in numerous identical variants growing next to each other and coarsening the microstructure. In particular, the key factor for the generating of autocatalytic nucleation was that the lower interfacial energy for the new BF laths nucleated through autocat-alytic nucleation, and resulted in a lower nucleation activation energy. Therefore, autocatalytic nucleation tends to occur in the deposited metals with low bainite transformation speed due to enough time and space for new BF laths nucleates at existing BF lath. |
| 资助项目 | National Science Foundation of Liaoning Province[2019JH3/30100039] ; Innovation Project of Shenyang National Laboratory for materials science[SYNL-2020] ; major R&D Project of Liaoning Province[2020JH1/10100001] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000863557900002 |
| 资助机构 | National Science Foundation of Liaoning Province ; Innovation Project of Shenyang National Laboratory for materials science ; major R&D Project of Liaoning Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176022]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Lu, Shanping |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jingwu,Wei, Shitong,Lu, Shanping. Bainite nucleation mechanism and mechanical properties in low carbon bainite deposited metals with different nickel additions[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,857:10. |
| APA | Liu, Jingwu,Wei, Shitong,&Lu, Shanping.(2022).Bainite nucleation mechanism and mechanical properties in low carbon bainite deposited metals with different nickel additions.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,857,10. |
| MLA | Liu, Jingwu,et al."Bainite nucleation mechanism and mechanical properties in low carbon bainite deposited metals with different nickel additions".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 857(2022):10. |
入库方式： OAI收割
来源：金属研究所
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