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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
Corresponding AuthorWang, W.(wangw@imr.ac.cn) ; Yang, K.(kyang@imr.ac.cn)
2022-03-02
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume836Pages:12
AbstractHerein, 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.
KeywordLow carbon martensitic stainless bearing steel Mo-rich carbides Yield strength Reverted austenite Strengthening mechanisms
Funding OrganizationYouth Innovation Promotion Association of Chinese Academy of Sciences ; Chinese Academy of Sciences
DOI10.1016/j.msea.2022.142736
Indexed BySCI
Language英语
Funding ProjectYouth Innovation Promotion Association of Chinese Academy of Sciences[2017233] ; Chinese Academy of Sciences
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000761630200002
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173290
Collection中国科学院金属研究所
Corresponding AuthorWang, W.; Yang, K.
Affiliation1.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
Recommended Citation
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.
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