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Ultrahigh surface hardness and excellent hardness gradient induced by ultrafine dual-carbides in a novel stainless bearing steel

文献类型：期刊论文

作者Wang W(王为)3; Yang MX(杨沐鑫)3; Wang, Jing3; Xie JJ(谢季佳)2,3; Wang, Jian2,3; Zhang ZH(张子晗)2,3; Zhou LL(周玲玲)2,3; Wu XL(武晓雷)2,3; Cao, Wenquan1; Yuan FP(袁福平)2,3
刊名JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
出版日期2024-05-01
卷号30页码:7420-7428
关键词Aerospace bearing steel Ultrahigh surface hardness Hardness gradient Dual-carbides CSS-42L Case-carburized
ISSN号2238-7854
DOI10.1016/j.jmrt.2024.05.159
通讯作者Wu, Xiaolei(xlwu@imech.ac.cn) ; Yuan, Fuping(fpyuan@lnm.imech.ac.cn)
英文摘要A novel alloy composition design (Fe-14Cr-13Co-5Mo-2Ni-1W-1V-0.16C-0.12Nb-0.074Si-0.027Mn, wt. %) was proposed for modification on that of the conventional CSS-42L stainless steel. The present homogeneous structure without carburizing displays an excellent synergy of yield strength and fracture toughness, which should improve the performance of the corresponding case-carburized steels under the contact/bending fatigue conditions. An ultrahigh surface hardness (71 HRC) and an excellent hardness gradient along the depth are achieved in the present case-carburized gradient structure. Higher surface hardness at a temperature range of 200-400 degrees C is also observed in the present case-carburized gradient structure, as compared to the other casecarburized advanced bearing/gear steels, such as the M50 steel, the M50NiL steel and the conventional CSS42L steel. Besides the previously reported M6C carbides in the case-carburized conventional CSS-42L steel, M7C3 carbides are newly discovered in the present case-carburized gradient structure due to the novel chemical design. The ultrahigh surface hardness at both room and high temperatures and the excellent hardness gradient distribution in the present case-carburized gradient structure should be attributed to the increased amount of dual-carbides, as well as the ultrafine dual-carbides embedded in the ultrafine martensite matrix. The superior mechanical properties of the present case-carburized gradient structure should be desirable for real bearing/gear applications.
分类号一类
WOS关键词ROLLING-CONTACT FATIGUE ; RESIDUAL-STRESSES ; PART I ; MICROSTRUCTURE ; TOUGHNESS ; PROPAGATION ; TRANSITION ; STRENGTH ; DUCTILE ; M50NIL
资助项目NSFC[11988102] ; National Natural Science Foundation of China[52192591] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0510300] ; National Key R&D Program of China[2019YFA0209902]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001294697100001
资助机构NSFC ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key R&D Program of China
其他责任者Wu, Xiaolei ; Yuan, Fuping
源URL[http://dspace.imech.ac.cn/handle/311007/96343]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Natl Engn Res Ctr Adv Steel Technol, Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Wang W,Yang MX,Wang, Jing,et al. Ultrahigh surface hardness and excellent hardness gradient induced by ultrafine dual-carbides in a novel stainless bearing steel[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,30:7420-7428.
APA 王为.,杨沐鑫.,Wang, Jing.,谢季佳.,Wang, Jian.,...&袁福平.(2024).Ultrahigh surface hardness and excellent hardness gradient induced by ultrafine dual-carbides in a novel stainless bearing steel.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,30,7420-7428.
MLA 王为,et al."Ultrahigh surface hardness and excellent hardness gradient induced by ultrafine dual-carbides in a novel stainless bearing steel".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30(2024):7420-7428.

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来源：力学研究所

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