Effects of rare earth elements on inclusions and impact toughness of high-carbon chromium bearing steel

doi:10.1016/j.jmst.2019.01.015

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of rare earth elements on inclusions and impact toughness of high-carbon chromium bearing steel
	Yang, Chaoyun 1,2; Luan, Yikun 1; Li, Dianzhong 1; Li, Yiyi 1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019-07-01
卷号	35 期号:7 页码:1298-1308
关键词	High-carbon chromium bearing steel Rare earth Inclusions Impact toughness
ISSN号	1005-0302
DOI	10.1016/j.jmst.2019.01.015
通讯作者	Luan, Yikun(ykluan@imr.ac.cn)
英文摘要	High-carbon chromium bearing steels with different rare earth (RE) contents were prepared to investigate the effects of RE on inclusions and impact toughness by different techniques. The results showed that RE addition could modify irregular Al2O3 and MnS into regular RE inclusions. With the increase of RE content, the reaction sequence of RE and potential inclusion forming elements should be O, S, As, P and C successively. RE inclusions containing C might precipitate in molten steel and solid state, but the precipitation temperature was significantly higher than that of carbides in high-carbon chromium bearing steel. For experimental bearing steels, the volume fraction of inclusions increased steadily with the increase of RE content, but smaller and more dispersed inclusions could be obtained by 0.018% RE content compared with bearing steel without RE, whereas the continuous increase of RE content led to an increasing trend for inclusion size and a gradual deterioration for inclusion distribution. RE addition could improve the transverse impact toughness and isotropy of bearing steel, and for modified high-carbon chromium bearing steel by RE alloying, the increase of RE content continuously increased both transverse and longitudinal impact toughness until excessive RE addition. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foundation of China[U1508215] ; National Natural Science Foundation of China[U1708252] ; National Key Research and Development Program[2016YFB0300401]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000466369600011
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/133627]
专题	金属研究所_中国科学院金属研究所
通讯作者	Luan, Yikun
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Yang, Chaoyun,Luan, Yikun,Li, Dianzhong,et al. Effects of rare earth elements on inclusions and impact toughness of high-carbon chromium bearing steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(7):1298-1308.
APA	Yang, Chaoyun,Luan, Yikun,Li, Dianzhong,&Li, Yiyi.(2019).Effects of rare earth elements on inclusions and impact toughness of high-carbon chromium bearing steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(7),1298-1308.
MLA	Yang, Chaoyun,et al."Effects of rare earth elements on inclusions and impact toughness of high-carbon chromium bearing steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.7(2019):1298-1308.