| A study on the flow behavior of 42CrMo steel under hot compression by thermal physical simulations | |
Tong, Ying1 ; Quan, Guozheng2; Luo, Gang1; Zhou, Jie1
| |
| 2010 | |
| 会议录名称 | Advanced Materials Research
 |
| 卷号 | 108-111 |
| 期号 | 1 |
| 页码 | 494-499 |
| 会议名称 | 2010 International Conference on Advanced Measurement and Test, AMT 2010 |
| 会议日期 | May 15, 2010 - May 16, 2010 |
| 会议地点 | Sanya, China |
| 会议录编者/会议主办者 | Intelligent Inf. Technol. Appl. Res. Assoc. ; Huazhong Normal University |
| 出版者 | Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany |
| 摘要 | This work was focused on the compressive deformation behavior of 42CrMo steel at temperatures from 1123K to 1348K and strain rates from 0.01s-1 to 10s-1 on a Gleeble-1500 thermo-simulation machine. The true stress-strain curves tested exhibit peak stresses at small strains, after them the flow stresses decrease monotonically until high strains, showing a dynamic flow softening. And the stress level decreases with increasing deformation temperature and decreasing strain rate. The values of strain hardening exponent n, and the strain rate sensitivity exponent m were calculated the method of multiple linear regression, the results show that the two material parameters are not constants, but changes with temperature and strain rate. Then the two variable material parameters were introduced into Fields-Backofen equation amended. Thus the constitutive mechanical discription of 42CrMo steel which can accurately describe the relationships among flow stress, temperature, strain rate, strain offers the basic model for plastic forming process simulation. |
| 关键词 | Chromium alloys Compression testing Computer simulation Deformation Elasticity Linear regression Plastic flow Rate constants Recrystallization (metallurgy) Strain hardening Stress-strain curves Stresses Structural design Basic models Compression tests Compressive deformation behavior Cr-mo steels Deformation temperatures Dynamic flows Flow behaviors Flow stress Gleeble High strains Hot compression Material parameter Multiple linear regressions Peak stress Physical simulation Plastic forming process Recrystallizations Simulation machine Small strains Strain rate sensitivity exponent Strain-hardening exponent Stress levels True stress-strain Two-materials |
| DOI | 10.4028/www.scientific.net/AMR.108-111.494 |
| 收录类别 | EI |
| 语种 | 英语 |
| EI入藏号 | 20102713054585 |
| 原始文献类型 | Conference article (CA) |
| 引用统计 | |
| 文献类型 | 会议论文 |
| 条目标识符 | https://ir.cqcet.edu.cn/handle/39TD4454/3302 |
| 专题 | 智能制造与汽车学院 |
| 作者单位 | 1.Department of Mechatronics Engineering, Chongqing College of Electronic Engineering, Chongqing 401331, China; 2.School of Material Science and Engineering, Chongqing University, Chongqing 400044, China |
| 第一作者单位 | 重庆电子科技职业大学 |
| 推荐引用方式 GB/T 7714 | Tong, Ying,Quan, Guozheng,Luo, Gang,et al. A study on the flow behavior of 42CrMo steel under hot compression by thermal physical simulations[C]//Intelligent Inf. Technol. Appl. Res. Assoc., Huazhong Normal University:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany,2010:494-499. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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