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Influence of cooling rate during cryogenic treatment on the hierarchical microstructure and mechanical properties of M54 secondary hardening steel

文献类型：期刊论文

作者Zhang, Honglin2,3; Zhang, Guangqian1,3; Zhou, Haichong1,3; Liu, Zhaohui2,3; Xu, Bin2,3; Hao, Luhan1; Sun, Mingyue2,3; Li, Dianzhong2
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2022-08-23
卷号851页码:11
关键词Secondary hardening steel Cryogenic treatment Cooling rate Hierarchical microstructure Ultra-high strength -toughness
ISSN号0921-5093
DOI10.1016/j.msea.2022.143659
通讯作者Hao, Luhan(lhhao@ysu.edu.cn) ; Sun, Mingyue(mysun@imr.ac.cn)
英文摘要Cryogenic treatment (CT) is an essential heat treatment process in improving the mechanical properties of secondary hardening ultra-high strength steel (SH-UHSS). The present study investigated the influence of cooling rate during CT on the hierarchical microstructure and strength-toughness of M54 SH-UHSS. Increasing cooling rate can synchronously refine martensite matrix and M2C-type (M = Mo, Cr, W, V) carbides, while there are the most refined martensite blocks and highest-density precipitation of the carbides at cooling rate of 3 C.min(-1). Further increased cooling rate weakens the effect of CT on the refinement and precipitation of martensite matrix. The refinement is related to the high-level segregation of carbon atoms and favorable equilibrium concentration of vacancies during CT and pinning effect of carbides on mobile dislocation during tempering. Besides, uniform carbon clusters and high-nucleation rate by the refined martensite matrix and high-density of dislocations mostly contribute to the above beneficial precipitation of carbides. Precipitation and martensitic matrix strengthening mostly contribute to the ultra-high strength (yield strength of 1730 MPa, ultimate tensile strength of 2018 MPa) at the cooling rate of 3 C.min(-1); meanwhile, the refined blocks as "effective " controlling unit is identified to be the major toughening mechanism contributing to a desirable impact toughness (V-notched Charpy impact energy of 30 J). This study would be instructive for processing the engineering components with large cross-section.
资助项目National Key R&D Programs of China[2018YFA0702900] ; National Natural Sci-ence Foundation of China[52173305] ; National Natural Sci-ence Foundation of China[52101061] ; China Postdoctoral Science Foundation[2021M703276] ; IMR Inno-vation Foundation[2022-PY12] ; Young Talents Project of SYNL[2021000571] ; Strategic Priority Research Program of the Chi-nese Academy of Sciences[XDC04000000] ; Ling Chuang Research Project of China National Nuclear Corporation ; Youth Innovation Promotion Association of CAS
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000835980800002
出版者ELSEVIER SCIENCE SA
资助机构National Key R&D Programs of China ; National Natural Sci-ence Foundation of China ; China Postdoctoral Science Foundation ; IMR Inno-vation Foundation ; Young Talents Project of SYNL ; Strategic Priority Research Program of the Chi-nese Academy of Sciences ; Ling Chuang Research Project of China National Nuclear Corporation ; Youth Innovation Promotion Association of CAS
源URL[http://ir.imr.ac.cn/handle/321006/174632]  
专题金属研究所_中国科学院金属研究所
通讯作者Hao, Luhan; Sun, Mingyue
作者单位1.Yanshan Univ, Sch Mech Engn, Qinhuangdao 066004, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Honglin,Zhang, Guangqian,Zhou, Haichong,et al. Influence of cooling rate during cryogenic treatment on the hierarchical microstructure and mechanical properties of M54 secondary hardening steel[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,851:11.
APA Zhang, Honglin.,Zhang, Guangqian.,Zhou, Haichong.,Liu, Zhaohui.,Xu, Bin.,...&Li, Dianzhong.(2022).Influence of cooling rate during cryogenic treatment on the hierarchical microstructure and mechanical properties of M54 secondary hardening steel.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,851,11.
MLA Zhang, Honglin,et al."Influence of cooling rate during cryogenic treatment on the hierarchical microstructure and mechanical properties of M54 secondary hardening steel".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 851(2022):11.

入库方式： OAI收割

来源：金属研究所

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