Microstructural evolution during tempering and intrinsic strengthening mechanisms in a low carbon martensitic stainless bearing steel

doi:10.1016/j.msea.2022.142736

CORC > 金属研究所 > 中国科学院金属研究所

	Microstructural evolution during tempering and intrinsic strengthening mechanisms in a low carbon martensitic stainless bearing steel
	Zeng, T. Y.1,2; Li, W.1,2; Wang, N. M.3; Wang, W.1,4; Yang, K.1
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2022-03-02
卷号	836 页码:12
关键词	Low carbon martensitic stainless bearing steel Mo-rich carbides Yield strength Reverted austenite Strengthening mechanisms
ISSN号	0921-5093
DOI	10.1016/j.msea.2022.142736
通讯作者	Wang, W.(wangw@imr.ac.cn) ; Yang, K.(kyang@imr.ac.cn)
英文摘要	Herein, the microstructural evolution and corresponding change in tensile properties in a low carbon martensitic stainless bearing steel during tempering were studied. The results showed that there was no delta-ferrite in the studied steel after austenitizing at 1000-1100 degrees C, and the volume fraction of austenite increased with increasing the tempering temperature from 470 degrees C to 590 degrees C due to the formation of reverted austenite. According to the EDS measurements, the reverted austenite was rich in C, Cr and Mo, other than previously assumed Co and Ni. On top of that, a considerable number of nanosized Mo-rich carbides with globular and rod-like morphologies were found after tempering at 530 degrees C, and further coarsened after tempering at 590 degrees C. Along with the change of phase constituents, the dislocation density decreased, and martensite block width increased as the tempering temperature increased. All the evolution of microstructures jointly contributed to an initial increase and then a decrease in the strength, and various strengthening mechanisms contributed to the change of yield strength were quantitatively analyzed and discussed in the study.
资助项目	Youth Innovation Promotion Association of Chinese Academy of Sciences[2017233] ; Chinese Academy of Sciences
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000761630200002
资助机构	Youth Innovation Promotion Association of Chinese Academy of Sciences ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173289]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, W.; Yang, K.
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.New Land Bearing Co Ltd, Ningbo 315300, Peoples R China 4.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zeng, T. Y.,Li, W.,Wang, N. M.,et al. Microstructural evolution during tempering and intrinsic strengthening mechanisms in a low carbon martensitic stainless bearing steel[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,836:12.
APA	Zeng, T. Y.,Li, W.,Wang, N. M.,Wang, W.,&Yang, K..(2022).Microstructural evolution during tempering and intrinsic strengthening mechanisms in a low carbon martensitic stainless bearing steel.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,836,12.
MLA	Zeng, T. Y.,et al."Microstructural evolution during tempering and intrinsic strengthening mechanisms in a low carbon martensitic stainless bearing steel".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 836(2022):12.