| High-Temperature Deformation Behavior of M50 Steel | |
| Chen, Guoxin1,2; Lu, Xingyu3; Yan, Jin2; Liu, Hongwei1; Sang, Baoguang2 | |
| Corresponding Author | Liu, Hongwei(hwliu@imr.ac.cn) ; Sang, Baoguang(bgsang@163.com) |
| 2022-04-01 | |
| Source Publication | METALS
 |
| Volume | 12Issue:4Pages:16 |
| Abstract | The hot deformation characteristics of M50 steel in the temperature range of 900-1150 degrees C and strain-rate range of 0.01-10 s(-1) was investigated in this study using a Gleeble-3800 thermal simulation testing machine. The true stress-strain curves showed that the deformation resistance increased with decreasing deformation temperature, and increasing strain rate before the peak stress was reached. After the peak stress, dynamic reversion occurred, and consequently, the deformation stress decreased. The softening phenomenon was more obvious when the strain rate was low. The calculated values of the thermal deformation-activation energy Q and stress index n were 233,684.2 J/mol and 5.025568, respectively. On this basis, the Arrhenius-type constitutive equation was established, and in addition, a polynomial fit based on strain was performed to obtain the 9th-order strain-compensated constitutive equation with high fitting accuracy. By processing the flow stress curves, the processing maps of M50 steel were constructed, and the optimal processing range was predicted to be in the range of 1070-1150 degrees C and 0.01-1 s(-1). The recrystallization behavior of M50 steel was also studied by constructing a dynamic recrystallization kinetic model and combining optical microscope (OM) and electron backscatter diffraction (EBSD) observation. The results show that with the increase of deformation temperature, the degree of recrystallization transformation increased accordingly, and the original grains were gradually replaced by recrystallized grains. Besides, in the optimal process zone for thermal processing, the recrystallized grains grew with decreasing strain rate and increasing temperature. |
| Keyword | M50 steel constitutive equation processing map dynamic recrystallization microstructure |
| Funding Organization | Key-Area Research and Development Program of Guangdong Province of China ; Natural Science Foundation of China |
| DOI | 10.3390/met12040541 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Key-Area Research and Development Program of Guangdong Province of China[2020B010184001] ; Natural Science Foundation of China[52031013] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000786101800001 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172840 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Hongwei; Sang, Baoguang |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Dalian Polytech Univ, Sch Mech Engn & Automat, Dalian 116034, Peoples R China 3.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Guoxin,Lu, Xingyu,Yan, Jin,et al. High-Temperature Deformation Behavior of M50 Steel[J]. METALS,2022,12(4):16. |
| APA | Chen, Guoxin,Lu, Xingyu,Yan, Jin,Liu, Hongwei,&Sang, Baoguang.(2022).High-Temperature Deformation Behavior of M50 Steel.METALS,12(4),16. |
| MLA | Chen, Guoxin,et al."High-Temperature Deformation Behavior of M50 Steel".METALS 12.4(2022):16. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment