Microstructural Stability and Softening Resistance of a Novel Hot-Work Die Steel

doi:10.3390/cryst10040238

CORC > 金属研究所 > 中国科学院金属研究所

	Microstructural Stability and Softening Resistance of a Novel Hot-Work Die Steel
	Du, Ningyu 1,2; Liu, Hongwei 1; Fu, Paixian 1; Liu, Hanghang 1; Sun, Chen 1,2; Cao, Yanfei 1; Li, Dianzhong 1
刊名	CRYSTALS
	2020-04-01
卷号	10 期号:4 页码:16
关键词	hot-work die steel thermal stability carbide dislocation tempering kinetics
ISSN号	2073-4352
DOI	10.3390/cryst10040238
通讯作者	Liu, Hongwei(hwliu@imr.ac.cn) ; Fu, Paixian(pxfu@imr.ac.cn) ; Cao, Yanfei(yfcao10s@imr.ac.cn)
英文摘要	A novel hot-work die steel, named 5Cr5Mo2, was designed to obtain superior thermal stability. The proposed alloy is evaluated in terms of its hardness, microstructure, and tempering kinetics. Compared with the commonly used H13 steel, the softening resistance of the designed steel is superior. Based on SEM and transmission electron microscopy (TEM) observations, a higher abundance of fine molybdenum carbides precipitate in 5Cr5Mo2 steel. Strikingly, the coarseness rate of the carbides is also relatively low during the tempering treatment. Moreover, owing to their pinning effect on dislocation slip, the dislocation density of the 5Cr5Mo2 steel decreases more slowly than that of the H13 steel. Furthermore, a mathematical softening model was successfully deduced and verified by analyzing the tempering kinetics. This model can be used to predict the hardness evolution of the die steels during the service period at high temperature.
资助项目	National Natural Science Foundation of China[51701225] ; Innovation project of the cutting-edge basic research and key technology by SYNL[L2019R36] ; Young Talent Project by SYNL[L2019F33] ; China Postdoctoral Science Foundation[2019M661153] ; Project to Strengthen Industrial Development at the Grass-roots Level[TC190A4DA/35]
WOS研究方向	Crystallography ; Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000535596700002
资助机构	National Natural Science Foundation of China ; Innovation project of the cutting-edge basic research and key technology by SYNL ; Young Talent Project by SYNL ; China Postdoctoral Science Foundation ; Project to Strengthen Industrial Development at the Grass-roots Level
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138957]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Hongwei; Fu, Paixian; Cao, Yanfei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Du, Ningyu,Liu, Hongwei,Fu, Paixian,et al. Microstructural Stability and Softening Resistance of a Novel Hot-Work Die Steel[J]. CRYSTALS,2020,10(4):16.
APA	Du, Ningyu.,Liu, Hongwei.,Fu, Paixian.,Liu, Hanghang.,Sun, Chen.,...&Li, Dianzhong.(2020).Microstructural Stability and Softening Resistance of a Novel Hot-Work Die Steel.CRYSTALS,10(4),16.
MLA	Du, Ningyu,et al."Microstructural Stability and Softening Resistance of a Novel Hot-Work Die Steel".CRYSTALS 10.4(2020):16.