| Influence of chromium content on the bainite transformation nucleation mechanism and the properties of 800 MPa grade low carbon bainite weld deposited metal | |
| Liu, Jingwu1,2; Sun, Jian1; Wei, Shitong1; Lu, Shanping1 | |
| Corresponding Author | Lu, Shanping(shplu@imr.ac.cn) |
| 2022-04-18 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 840Pages:12 |
| Abstract | The strength-toughness trade-off theory is always the focus in the field of high-strength structure materials. Especially for the deposited metals, the matching of high-strength and accepted toughness is difficult to achieve. In this work, the nucleation mechanism of bainite ferrite (BF) and impact toughness were investigated systematically for the deposited metals with different chromium (Cr) contents (0.3 wt %, 0.6 wt % and 1.0 wt %). The microstructure of the deposited metals with different Cr contents was analyzed by a combination of multiple analytical tools: scanning electron microscope, transmission electron microscope and electron backscatter diffraction. The results revealed that autocatalytic nucleation during the bainite transformation had a significant effect on the microstructure evolution and the impact toughness due to the complex crystallographic orientation of BF. As the Cr content increased, the autocatalytic effect became weaker, and the selection tendency of variants enhanced. The autocatalytic nucleation during bainite transformation was primarily controlled by the transformation kinetics of BF. Enough space at the side of the existing BF resulted from the low transformation speed of bainite was necessary for the occurrence of autocatalytic nucleation. In addition, toughness decreased as autocatalytic nucleation weakened due to the coarsening of microstructure and appearance of coalesced bainite in the microstructure of deposited metal. The interlaced BF arrangement could bring a better combination of high strength and toughness for the deposited metals. |
| Keyword | Chromium content Impact toughness Autocatalytic nucleation Coalesced bainite Deposited metal |
| Funding Organization | major R&D Project of Liaoning Province ; National Science Foundation of Liaoning Province ; Innovation Project of She-nyang National Laboratory for materials science ; National Natural Science Foundation of China |
| DOI | 10.1016/j.msea.2022.142893 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | major R&D Project of Liaoning Province[2020JH1/10100001] ; National Science Foundation of Liaoning Province[2019JH3/30100039] ; Innovation Project of She-nyang National Laboratory for materials science ; National Natural Science Foundation of China ; [52101060] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000776440800002 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172985 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lu, Shanping |
| Affiliation | 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 |
| Recommended Citation GB/T 7714 | Liu, Jingwu,Sun, Jian,Wei, Shitong,et al. Influence of chromium content on the bainite transformation nucleation mechanism and the properties of 800 MPa grade low carbon bainite weld deposited metal[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,840:12. |
| APA | Liu, Jingwu,Sun, Jian,Wei, Shitong,&Lu, Shanping.(2022).Influence of chromium content on the bainite transformation nucleation mechanism and the properties of 800 MPa grade low carbon bainite weld deposited metal.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,840,12. |
| MLA | Liu, Jingwu,et al."Influence of chromium content on the bainite transformation nucleation mechanism and the properties of 800 MPa grade low carbon bainite weld deposited metal".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 840(2022):12. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment