Regulating precipitation behavior in an ultrahigh-strength, high-molybdenum maraging steel via laser powder bed fusion

doi:10.1016/j.scriptamat.2024.116245

IMR OpenIR

	Regulating precipitation behavior in an ultrahigh-strength, high-molybdenum maraging steel via laser powder bed fusion
	Wang, Shidong 1; Wu, Wenhua 1; Sun, Yue 2; Yang, Zhigang 1; Sha, Gang 2; Wang, Wei 3; Jiao, Zengbao 4; Chen, Hao 1
通讯作者	Chen, Hao(hao.chen@mail.tsinghua.edu.cn)
	2024-11-01
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	252 页码:7
摘要	In high-molybdenum (Mo) maraging steels, the formation of coarse Mo-enriched precipitates during conventional hot processing can significantly compromise both strength and ductility. In this contribution, we utilized the laser powder bed fusion (L-PBF) technique to produce a high-Mo maraging steel with a nominal chemical composition of Fe-13Ni-12Co-10Mo-1W-1Ti (wt.%). Notably, the ultrafast cooling rate inherent to L-PBF successfully suppresses the formation of coarse Mo-enriched precipitates. The co-precipitation of high-density Ni3Ti and Mo-enriched nanoprecipitates within the direct-aged martensitic matrix was observed. As a result, despite containing -16% soft reverted austenite, the direct-aged samples exhibit an ultrahigh yield strength (YS) of 2.34 GPa and an ultrahigh ultimate tensile strength (UTS) of -2.57 GPa, with an acceptable uniform elongation (UE) of around 2.7%. This work may provide a new pathway for the development of ultrahigh-strength maraging steels.
关键词	Maraging steel Precipitation Ultrahigh strength Laser powder bed fusion
资助者	National Key R&D program of China ; National Natural Science Foundation of China ; Tsinghua University Initiative Scientific Research Program ; Sino-German Center
DOI	10.1016/j.scriptamat.2024.116245
收录类别	SCI
语种	英语
资助项目	National Key R&D program of China[2022YFB3705200] ; National Natural Science Foundation of China[52171008] ; National Natural Science Foundation of China[51922054] ; Tsinghua University Initiative Scientific Research Program[20233080002] ; Sino-German Center[M-0319]
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:001261144300001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：1[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/321006/187833
专题	中国科学院金属研究所
通讯作者	Chen, Hao
作者单位	1.Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat, Minist Educ, Beijing, Peoples R China 2.Nanjing Univ Sci & Technol, Herbert Gleiter Inst Nanosci, Sch Mat Sci & Engn, Nanjing, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang, Peoples R China 4.Hong Kong Polytech Univ, Dept Mech Engn, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shidong,Wu, Wenhua,Sun, Yue,et al. Regulating precipitation behavior in an ultrahigh-strength, high-molybdenum maraging steel via laser powder bed fusion[J]. SCRIPTA MATERIALIA,2024,252:7.
APA	Wang, Shidong.,Wu, Wenhua.,Sun, Yue.,Yang, Zhigang.,Sha, Gang.,...&Chen, Hao.(2024).Regulating precipitation behavior in an ultrahigh-strength, high-molybdenum maraging steel via laser powder bed fusion.SCRIPTA MATERIALIA,252,7.
MLA	Wang, Shidong,et al."Regulating precipitation behavior in an ultrahigh-strength, high-molybdenum maraging steel via laser powder bed fusion".SCRIPTA MATERIALIA 252(2024):7.