Microstructure evolution under different austenitizing temperatures and its effect on mechanical properties and mechanisms in a newly high aluminum bearing steel
文献类型：期刊论文
| 作者 | Wang, Leitao1,2; Sun, Chen1; Cao, Yanfei1; Guo, Qianwei1,2; Song, Kaiyan1; Liu, Hanghang1; Liu, Hongwei1; Fu, Paixian1 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 30页码:9481-9493 |
| 关键词 | Bearing steel Lightweight steel Mechanical properties Heat treatments |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2024.06.030 |
| 通讯作者 | Cao, Yanfei(yfcao10s@imr.ac.cn) ; Fu, Paixian(pxfu@imr.ac.cn) |
| 英文摘要 | A new type of lightweight high aluminum bearing steel had been developed based on the widely used high carbon chromium bearing steel. Via multi-scale experimental characterizations and theoretical calculations, here we mainly focused on the evolution of microstructure including precipitates under different quenching temperatures. Accordingly, the mechanical properties, mechanisms and fracture features of the new high-Al steel after tempering were characterized in detail. As austenitizing temperature rose, matrix of steel varied from multiphase structure of martensite, retained austenite (RA) and ferrite to the full martensite and RA. RA was found in all four samples with the austenitizing temperature from 850 degrees C to 1000 degrees C. In terms of precipitates, a transformation from M3C to M7C3 were observed. As a phase newly introduced by Al, AlFe3C (kappa carbides) would dissolve into matrix at 900 degrees C. Eventually, the yield strength of the researched steel could reach 1430 MPa with an unnotched impact energy of 35 J. Theoretical results showed that high strength of researched steel was mainly caused by solid solution effect of carbon and high density of dislocation. In terms of toughness and fracture observation, high impact energy was attributed to the highest density of grain boundary, and also, kappa carbides were found at the origin of secondary crack. This study highlighted the significant effect of Al addition and quenching process based on the traditional bearing steel, which showed a novel method and idea to reduce significantly the weight of bearings. |
| 资助项目 | National Natural Science Foundation of China[52321001] ; National Natural Science Foundation of China[52031013] ; Doctoral Research Startup Fund Guidance Program Project of Liaoning Province[2023- BS-014] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001286070000001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Doctoral Research Startup Fund Guidance Program Project of Liaoning Province |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Cao, Yanfei; Fu, Paixian |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Leitao,Sun, Chen,Cao, Yanfei,et al. Microstructure evolution under different austenitizing temperatures and its effect on mechanical properties and mechanisms in a newly high aluminum bearing steel[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,30:9481-9493. |
| APA | Wang, Leitao.,Sun, Chen.,Cao, Yanfei.,Guo, Qianwei.,Song, Kaiyan.,...&Fu, Paixian.(2024).Microstructure evolution under different austenitizing temperatures and its effect on mechanical properties and mechanisms in a newly high aluminum bearing steel.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,30,9481-9493. |
| MLA | Wang, Leitao,et al."Microstructure evolution under different austenitizing temperatures and its effect on mechanical properties and mechanisms in a newly high aluminum bearing steel".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30(2024):9481-9493. |
入库方式： OAI收割
来源：金属研究所
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