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

文献类型：期刊论文

作者Guo, Qianwei1,2; Liu, Hanghang1,2; Sun, Chen1,2; Liu, Hongwei1,2; Cao, Yanfei1,2; Wang, Leitao1,2; Cai, Xin1,2; Fu, Paixian1,2; Wang, Pei1,2; Li, Dianzhong1,2
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2023-05-08
卷号872页码:12
关键词Carburized bearing steel Gradient structure Retained austenite Nanoprecipitates Fine grain structure Hardness-strength-toughness
ISSN号0921-5093
DOI10.1016/j.msea.2023.144961
通讯作者Liu, Hanghang(hhliu15b@imr.ac.cn) ; Sun, Chen(csun15s@imr.ac.cn) ; Fu, Paixian(pxfu@imr.ac.cn)
英文摘要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.
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
语种英语
WOS记录号WOS:001029327900001
出版者ELSEVIER SCIENCE SA
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation ; China Postdoctoral Science Foundation ; IMR Innovation Fund
源URL[http://ir.imr.ac.cn/handle/321006/178522]  
专题金属研究所_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.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 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.

入库方式： OAI收割

来源：金属研究所

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