The formation mechanism of S-ferrite and its evolution behavior in M50NiL steel

doi:10.1016/j.jmrt.2024.07.088

IMR OpenIR

	The formation mechanism of S-ferrite and its evolution behavior in M50NiL steel
	Wang, Shijie 1,2; Lu, Xingyu 1,2; Guan, Jian 2; Liu, Hongwei 2; Lei, Chengshuai 2; Sun, Chen 2; Zhou, Lina 3; Liu, Ming 3; Huang, Ju 4; Cao, Yanfei 2; Wang, Qiang 5; Li, Dianzhong 2
通讯作者	Liu, Hongwei(hwliu@imr.ac.cn) ; Lei, Chengshuai(cslei@imr.ac.cn) ; Sun, Chen(csun15s@imr.ac.cn)
	2024-07-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	31 页码:3551-3562
摘要	Residual S-ferrite is ubiquitous in M50NiL bearing steel and seriously deteriorates impact toughness. In the present work, the formation mechanism of S-ferrite in M50NiL steel and the influence of element segregation on its formation process were investigated. The residual S-ferrite was proved to form directly from the final liquid phase at the end of solidification due to serious segregation of Mo and V elements. Calculation results indicate that the segregation of Mo and V elements expanded the "L + S" two-phase region and stabilized S-ferrite. Due to the high concentration of Mo and V, large-sized V-rich MC and Mo-rich M2C carbides would precipitate in S-ferrite at 900-1200 degrees C if the cooling rate is slow. When kept at 1200 degrees C for no more than 30 min, Mo and V elements derived from the decomposition of large-sized carbides are preferentially diffused into S-ferrite, enhancing the stability of S-ferrite. To achieve the effective elimination of S-ferrite in M50NiL steel, it is necessary to keep the ingot at 1200 degrees C for at least 20 h.
关键词	Bearing steel Microsegregation S -Ferrite Carbide Microstructure evolution
资助者	National Key Research and Devel-opment Program of China ; National Natural Science Foundation of China
DOI	10.1016/j.jmrt.2024.07.088
收录类别	SCI
语种	英语
资助项目	National Key Research and Devel-opment Program of China[2018YFA0702900] ; National Natural Science Foundation of China[52321001]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001275418800001
出版者	ELSEVIER
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188352
专题	中国科学院金属研究所
通讯作者	Liu, Hongwei; Lei, Chengshuai; Sun, Chen
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.AECC Harbin Bearing Co Ltd, Harbin 150025, Peoples R China 4.AECC Guiyang Engine Design Res Inst, Guiyang 550081, Peoples R China 5.Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shijie,Lu, Xingyu,Guan, Jian,et al. The formation mechanism of S-ferrite and its evolution behavior in M50NiL steel[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,31:3551-3562.
APA	Wang, Shijie.,Lu, Xingyu.,Guan, Jian.,Liu, Hongwei.,Lei, Chengshuai.,...&Li, Dianzhong.(2024).The formation mechanism of S-ferrite and its evolution behavior in M50NiL steel.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,31,3551-3562.
MLA	Wang, Shijie,et al."The formation mechanism of S-ferrite and its evolution behavior in M50NiL steel".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 31(2024):3551-3562.