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

doi:10.1016/j.msea.2022.143659

CORC > 金属研究所 > 中国科学院金属研究所

	Influence of cooling rate during cryogenic treatment on the hierarchical microstructure and mechanical properties of M54 secondary hardening steel
	Zhang, Honglin 2,3; Zhang, Guangqian 1,3; Zhou, Haichong 1,3; Liu, Zhaohui 2,3; Xu, Bin 2,3; Hao, Luhan 1; Sun, Mingyue 2,3; Li, Dianzhong 2
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	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
DOI	10.1016/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
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000835980800002
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
内容类型	期刊论文
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.