Effect of aging temperature on the heterogeneous microstructure and mechanical properties of a 12Cr-10Ni-Mo-Ti maraging steel for cryogenic applications

doi:10.1007/s10853-021-05993-0

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	Effect of aging temperature on the heterogeneous microstructure and mechanical properties of a 12Cr-10Ni-Mo-Ti maraging steel for cryogenic applications
	Zhang, Honglin 1,2,3; Sun, Mingyue 1,3; Ma, Dongping 4; Xu, Bin 1,3; Wang, Taijiang 4; Li, Dianzhong 3; Li, Yiyi 3
刊名	JOURNAL OF MATERIALS SCIENCE
	2021-03-16
页码	16
ISSN号	0022-2461
DOI	10.1007/s10853-021-05993-0
通讯作者	Sun, Mingyue(mysun@imr.ac.cn)
英文摘要	The evolution of heterogeneous microstructure and mechanical properties of a 12Cr-10Ni-Mo-Ti maraging steel was investigated at different aging temperatures. As the aging temperature increases, more reversed austenite forms with the recovery of martensite matrix. When aging temperature is up to 560 degrees C, more lath-like reversed austenite coalesces together and leads to the formation of martensite and austenite dual-phase microstructure. Fine eta-Ni-3(Ti, Al) particles initially precipitate at 440 degrees C and grow up with increased aging temperature. Notably, it was found that eta-precipitates can be encompassed in reversed austenite at 500 degrees C. Thermodynamic calculations further verify the austenite reversion, and nanoprecipitation can occur independently of each other though there is competition of Ni element. However, it leads to the coarsening and dissolution of eta-precipitates as the aging temperature further increases. The desirable heterogeneous microstructure of the aged martensite matrix, soft reversed austenite and stable eta-precipitates at 500 degrees C contributes to a high yield strength ( similar to 1 GPa, 25 degrees C; similar to 1.4 GPa, -196 degrees C) and a reasonable cryogenic impact toughness (similar to 60 J, - 196 degrees C), which is mainly ascribed to the precipitation strengthening of eta-precipitates, transformation-induced plasticity (TRIP) toughening effect from the lath-like reversed austenite and the increased misorientation toward high-angle grain boundary.
资助项目	National Key R&D Program of China[2018YFA0702900] ; National Natural Science Foundation of China[U1508215] ; National Natural Science Foundation of China[51774265] ; National Science and Technology Major Project of China[2019ZX06004010] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000] ; LingChuang Research Project of China National Nuclear Corporation ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
WOS研究方向	Materials Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000629492100006
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; LingChuang Research Project of China National Nuclear Corporation ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161731]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sun, Mingyue
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.China Aerodynam Res & Dev Ctr, Mianyang 621000, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Honglin,Sun, Mingyue,Ma, Dongping,et al. Effect of aging temperature on the heterogeneous microstructure and mechanical properties of a 12Cr-10Ni-Mo-Ti maraging steel for cryogenic applications[J]. JOURNAL OF MATERIALS SCIENCE,2021:16.
APA	Zhang, Honglin.,Sun, Mingyue.,Ma, Dongping.,Xu, Bin.,Wang, Taijiang.,...&Li, Yiyi.(2021).Effect of aging temperature on the heterogeneous microstructure and mechanical properties of a 12Cr-10Ni-Mo-Ti maraging steel for cryogenic applications.JOURNAL OF MATERIALS SCIENCE,16.
MLA	Zhang, Honglin,et al."Effect of aging temperature on the heterogeneous microstructure and mechanical properties of a 12Cr-10Ni-Mo-Ti maraging steel for cryogenic applications".JOURNAL OF MATERIALS SCIENCE (2021):16.