Improving the Microstructure and Impact Toughness of Bainite/Martensite Bearing Steel by Rare Earth Treatment

doi:10.1007/s11661-024-07592-5

IMR OpenIR

	Improving the Microstructure and Impact Toughness of Bainite/Martensite Bearing Steel by Rare Earth Treatment
	Li, Zan 1,2; Fu, Zhihao 1,2; Yang, Chaoyun 1; Li, Xing 1; Luan, Yikun 1,2; Li, Dianzhong 1,2
通讯作者	Yang, Chaoyun(cyyang14s@imr.ac.cn) ; Luan, Yikun(ykluan@imr.ac.cn)
	2024-10-04
发表期刊	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN	1073-5623
页码	16
摘要	This study aims to investigate the influence of rare earth (RE) elements on the microstructure and mechanical properties of SAE 52100 bearing steel with bainite/martensite (B/M) structure. For this purpose, SAE 52100 bearing steels with varying RE contents were prepared and analyzed after undergoing B/M heat treatment. The microstructure analysis results suggest that 0.006 wt pct RE elements can significantly facilitate the intragranular transformation of bainite, leading to an increase in bainite volume fraction and a reduction in martensite and retained austenite (RA) volume fraction. The size of M/A blocks decreases accordingly in the RE-treated steels due to the increased partitioning of austenite grains. As the RE content increases, the volume fraction of bainite first increases and then remains nearly unchanged, while the volume fraction of martensite and RA presents the opposite variation tendency, so does the size of M/A blocks. The testing results of mechanical properties indicate that B/M bearing steel exhibits a notable enhancement in impact toughness compared to martensite bearing steel, almost without sacrificing hardness. RE treatment can further improve the impact toughness of B/M bearing steel. This mainly attributes to the role of RE elements in grain boundary strengthening and the refinement of M/A blocks, which inhibits crack initiation at grain boundary and crack propagation contributed by M/A blocks.
资助者	National Natural Science Foundation of China ; Inner Mongolia Science and Technology Major Project ; Key Research Program of the Chinese Academy of Sciences
DOI	10.1007/s11661-024-07592-5
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52101165] ; National Natural Science Foundation of China[52031013] ; National Natural Science Foundation of China[52071322] ; Inner Mongolia Science and Technology Major Project[2020ZD0010] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-3]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001328924900002
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/321006/190584
专题	中国科学院金属研究所
通讯作者	Yang, Chaoyun; Luan, Yikun
作者单位	1.Chinese Acad Sci, Inst Met Res, 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	Li, Zan,Fu, Zhihao,Yang, Chaoyun,et al. Improving the Microstructure and Impact Toughness of Bainite/Martensite Bearing Steel by Rare Earth Treatment[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2024:16.
APA	Li, Zan,Fu, Zhihao,Yang, Chaoyun,Li, Xing,Luan, Yikun,&Li, Dianzhong.(2024).Improving the Microstructure and Impact Toughness of Bainite/Martensite Bearing Steel by Rare Earth Treatment.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,16.
MLA	Li, Zan,et al."Improving the Microstructure and Impact Toughness of Bainite/Martensite Bearing Steel by Rare Earth Treatment".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE (2024):16.