| 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 Author | Liu, Hongwei(hwliu@imr.ac.cn) ; Fu, Paixian(pxfu@imr.ac.cn) ; Cao, Yanfei(yfcao10s@imr.ac.cn) |
| 2020-04-01 | |
| Source Publication | CRYSTALS
 |
| ISSN | 2073-4352 |
| Volume | 10Issue:4Pages:16 |
| Abstract | 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. |
| Keyword | hot-work die steel thermal stability carbide dislocation tempering kinetics |
| Funding Organization | 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 |
| DOI | 10.3390/cryst10040238 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Crystallography ; Materials Science |
| WOS Subject | Crystallography ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000535596700002 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138958 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Hongwei; Fu, Paixian; Cao, Yanfei |
| Affiliation | 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 |
| 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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