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Microstructural Stability and Softening Resistance of a Novel Hot-Work Die Steel
Du, Ningyu1,2; Liu, Hongwei1; Fu, Paixian1; Liu, Hanghang1; Sun, Chen1,2; Cao, Yanfei1; Li, Dianzhong1
Corresponding AuthorLiu, Hongwei(hwliu@imr.ac.cn) ; Fu, Paixian(pxfu@imr.ac.cn) ; Cao, Yanfei(yfcao10s@imr.ac.cn)
2020-04-01
Source PublicationCRYSTALS
ISSN2073-4352
Volume10Issue:4Pages:16
AbstractA 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.
Keywordhot-work die steel thermal stability carbide dislocation tempering kinetics
Funding OrganizationNational 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
DOI10.3390/cryst10040238
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaCrystallography ; Materials Science
WOS SubjectCrystallography ; Materials Science, Multidisciplinary
WOS IDWOS:000535596700002
PublisherMDPI
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138958
Collection中国科学院金属研究所
Corresponding AuthorLiu, Hongwei; Fu, Paixian; Cao, Yanfei
Affiliation1.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
Recommended Citation
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.
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