In situ investigation of the fracture of primary carbides and its mechanism in M50 steel
文献类型：期刊论文
| 作者 | Du, Ningyu1,2; Liu, Hanghang2; Cao, Yanfei2; Fu, Paixian2; Sun, Chen2; Liu, Hongwei2; Li, Dianzhong2 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 186页码:11 |
| 关键词 | Bearing steel Primary carbides Fracture X-ray microtomography MC |
| ISSN号 | 1044-5803 |
| DOI | 10.1016/j.matchar.2022.111822 |
| 通讯作者 | Liu, Hongwei(hwliu@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn) |
| 英文摘要 | The tensile crack initiation and propagation of M50 bearing steel were investigated. It is found that the primary carbides were fractured during the tensile test by in situ SEM, while decohesion of the carbide/matrix interface was hardly observed. In order to capture the initial tensile crack, quasi-in situ X-ray microtomography was performed, indicating that the earliest crack was formed from the broken interior carbides. This indicates that multiple cracks already existed in the matrix when they were observed on the sample surface. Electron backscattered diffraction (EBSD) and the finite element method (FEM) were applied to analyze the fracture behavior of carbide particles. The fracture of carbide particle is produced by the incompatible deformation between the matrix and carbides. The frequency of carbide fracture was found to be related with its fracture strength, size and shape. M2C carbide fracture was more easily broken than the MC carbide during tensile test. In addition, the long axis of most M2C carbides is approximately parallel to its (0001) plane and normal to tensile stress, leading to cracking more easily. Finally, a suggestion of adding pre-deformation is proposed to make M2C carbides broken sufficiently and further refine the primary carbides. |
| 资助项目 | Key-Area Research and Develop-ment Program of Guangdong Province, China[2020B010184001] ; Natural Science Foundation of China[52031013] ; National Key Research and Development Program[2018YFA0702901] ; National Natural Science Foundation of China[51701225] ; National Science and Technology Major Project[2017-VII-0008-0101] ; National Science and Technology Major Project[TC190A4DA/35] ; IMR Innovation Fund[2022-PY09] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000809940400003 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | Key-Area Research and Develop-ment Program of Guangdong Province, China ; Natural Science Foundation of China ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Science and Technology Major Project ; IMR Innovation Fund |
| 源URL | [http://ir.imr.ac.cn/handle/321006/174780]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Hongwei; Li, Dianzhong |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.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 | Du, Ningyu,Liu, Hanghang,Cao, Yanfei,et al. In situ investigation of the fracture of primary carbides and its mechanism in M50 steel[J]. MATERIALS CHARACTERIZATION,2022,186:11. |
| APA | Du, Ningyu.,Liu, Hanghang.,Cao, Yanfei.,Fu, Paixian.,Sun, Chen.,...&Li, Dianzhong.(2022).In situ investigation of the fracture of primary carbides and its mechanism in M50 steel.MATERIALS CHARACTERIZATION,186,11. |
| MLA | Du, Ningyu,et al."In situ investigation of the fracture of primary carbides and its mechanism in M50 steel".MATERIALS CHARACTERIZATION 186(2022):11. |
入库方式： OAI收割
来源：金属研究所
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