| Effects of rare earth elements on inclusions, microstructure and impact toughness of spring steel | |
| Hao, Chun-lei1,2; Yang, Chao-yun1; Liu, Peng1; Luan, Yi-kun1; Sang, Bao-guang2 | |
| 通讯作者 | Luan, Yi-kun(ykluan@imr.ac.cn) ; Sang, Bao-guang(bgsang@163.com) |
| 2023-08-18 | |
| 发表期刊 | JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
 |
| ISSN | 1006-706X |
| 页码 | 12 |
| 摘要 | Spring steel is an indispensable basic part manufacturing material in mechanical equipment, which is widely used in transportation tools such as automobiles, railways, construction machinery and other industries. The effects of rare earth (RE) on inclusions, microstructure, carbides and impact toughness of 50CrV spring steel were studied by means of optical microscope, scanning electron microscope, transmission electron microscope and impact tester. The results show that the addition of rare earth can modify the main MnS and Al2O3 inclusions in steel to form spherical or near-spherical rare earth inclusions, and the size of inclusions is significantly reduced. In the quenched structure, the size of martensite slab becomes smaller and the structure is refined. After tempering, the carbide changes from sheet to ellipse, which makes it easier for spring steel to form stress concentration cracks under stress. VC becomes finer and more dispersed, which leads to better pinning of grain boundaries and smaller grain sizes. The impact toughness of 50CrV-RE spring steel increased from 21 to 41 J by 95% due to the improvement of inclusions, microstructure and carbides by rare earth. It is possible to improve the strength and toughness of spring steel for the improvement of railway running speed and the development of vehicle lightweight in China. |
| 关键词 | Rare earth Spring steel Inclusion Microstructure Impact toughness |
| 资助者 | National Natural Science Foundation of China |
| DOI | 10.1007/s42243-023-01055-8 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[52101165] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| WOS类目 | Metallurgy & Metallurgical Engineering |
| WOS记录号 | WOS:001049995900001 |
| 出版者 | SPRINGER |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/178886 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Luan, Yi-kun; Sang, Bao-guang |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Dalian Polytech Univ, Sch Mech Engn & Automat, Dalian 116034, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hao, Chun-lei,Yang, Chao-yun,Liu, Peng,et al. Effects of rare earth elements on inclusions, microstructure and impact toughness of spring steel[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2023:12. |
| APA | Hao, Chun-lei,Yang, Chao-yun,Liu, Peng,Luan, Yi-kun,&Sang, Bao-guang.(2023).Effects of rare earth elements on inclusions, microstructure and impact toughness of spring steel.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,12. |
| MLA | Hao, Chun-lei,et al."Effects of rare earth elements on inclusions, microstructure and impact toughness of spring steel".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL (2023):12. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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