Effectively improving the hardness-strength-toughness of carburized bearing steel via nanoprecipitates and fine grain structure

doi:10.1016/j.msea.2023.144961

IMR OpenIR

	Effectively improving the hardness-strength-toughness of carburized bearing steel via nanoprecipitates and fine grain structure
	Guo, Qianwei 1,2; Liu, Hanghang 1,2; Sun, Chen 1,2; Liu, Hongwei 1,2; Cao, Yanfei 1,2; Wang, Leitao 1,2; Cai, Xin 1,2; Fu, Paixian 1,2; Wang, Pei 1,2; Li, Dianzhong 1,2
通讯作者	Liu, Hanghang(hhliu15b@imr.ac.cn) ; Sun, Chen(csun15s@imr.ac.cn) ; Fu, Paixian(pxfu@imr.ac.cn)
	2023-05-08
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	872 页码:12
摘要	Cryogenic treatments are fast and efficient methods used to improve the mechanical properties of metal components by promoting retained austenite (RA) transformation. However, the relationship between the evolution of RA with the gradient changes in content and hardness-strength-toughness improvements during this period are unclear. The present study investigated the beneficial effects of a cryogenic treatment on the microstructural evolution and mechanical properties of a gradient-structured carburized M50NiL bearing steel. The results revealed that the RA average sizes, the densities of the high-angle grain boundaries (DHAGBs) and low-angle grain boundaries (DLAGBs), and the hardness of the carburized layer changed with increasing distance from the surface. Compared with the untreated samples, the cryogenically treated samples demonstrated a 30% greater effective hardened layer thickness as well as 15.6% and 22.9% higher strength and toughness, respectively. The synergistic enhancements of the hardness, strength, and toughness provided by the cryogenic treatment were attributed to the increased nanoprecipitate content and finer grain structure generated in situ during transformation and further decomposition of the RA, which resulted in reductions of up to 83.6% in the RA content. This work provided new ideas for innovative enhancements of gradient-structured materials with superior mechanical properties.
关键词	Carburized bearing steel Gradient structure Retained austenite Nanoprecipitates Fine grain structure Hardness-strength-toughness
资助者	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation ; China Postdoctoral Science Foundation ; IMR Innovation Fund
DOI	10.1016/j.msea.2023.144961
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000] ; National Natural Science Foundation[52031013] ; China Postdoctoral Science Foundation[2019M661153] ; IMR Innovation Fund[2022-PY09]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001029327900001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：9[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/321006/178523
专题	中国科学院金属研究所
通讯作者	Liu, Hanghang; Sun, Chen; Fu, Paixian
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Guo, Qianwei,Liu, Hanghang,Sun, Chen,et al. Effectively improving the hardness-strength-toughness of carburized bearing steel via nanoprecipitates and fine grain structure[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,872:12.
APA	Guo, Qianwei.,Liu, Hanghang.,Sun, Chen.,Liu, Hongwei.,Cao, Yanfei.,...&Li, Dianzhong.(2023).Effectively improving the hardness-strength-toughness of carburized bearing steel via nanoprecipitates and fine grain structure.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,872,12.
MLA	Guo, Qianwei,et al."Effectively improving the hardness-strength-toughness of carburized bearing steel via nanoprecipitates and fine grain structure".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 872(2023):12.