| 纯镁等通道转角微挤压成型工艺及摩擦效应研究 |
| |
| 引用本文： | 赵祥,彭必友,潘仁元,陈世雄.纯镁等通道转角微挤压成型工艺及摩擦效应研究[J].西华大学学报(自然科学版),2017,36(6):88-94. |
| |
| 作者姓名： | 赵祥 彭必友 潘仁元 陈世雄 |
| |
| 作者单位： | 西华大学材料科学与工程学院，四川 成都 610039 |
| |
| 基金项目： | 西华大学研究生创新基金ycjj2016040 |
| |
| 摘 要： | 以99.95%的高纯镁为研究对象，借助有限元分析软件DEFORM对等通道转角微挤压(equal channel angular micro pressing, M-ECAP)过程进行数值模拟，优化等通道微挤压(简称M-ECAP)变形的成形工艺，讨论变形过程中的材料流动、挤压载荷变化规律、等效应力应变分布规律、摩擦效应对M-ECAP变形过程的影响。结果表明:试样等效应变趋于均匀，累积应变量增加，晶粒细小且均匀，塑性得到有效提高；随着摩擦因子的增大，载荷逐渐增大，最大等效应变变化不明显、最大等效应力小幅减小。
|
| 关 键 词： | 高纯镁 等通道转角微挤压 数值模拟 成形工艺 摩擦因子 摩擦效应 |
| 收稿时间： | 2017-03-07 |
Study on Forming Process and Friction Effect of Pure Magnesium Equal Channel Angular Pressing |
| |
| ZHAO Xiang,PENG Biyou,PAN Renyuan,CHEN Shixiong.Study on Forming Process and Friction Effect of Pure Magnesium Equal Channel Angular Pressing[J].Journal of Xihua University:Natural Science Edition,2017,36(6):88-94. |
| |
| Authors: | ZHAO Xiang PENG Biyou PAN Renyuan CHEN Shixiong |
| |
| Affiliation: | School of Materials Science and Engineering, Xihua University, Chengdu 610039 China |
| |
| Abstract: | In this paper, high purity magnesium(purity:99.95%)was chosen as research object.The commercial software DEFORM was utilized to simulate the deformation process of M-ECAP.The flow of material, forming load, equivalent stress and strain and the effect of friction on the M-ECAP deformation process were investigated. The results show that sample tends to be more uniform and equivalent strain accumulated variables should be increased, grain fine and homogeneous. The plastic is improved effectively. Load increases gradually with the increase of friction factor, while the maximum equivalent strain change is not obvious and the maximum equivalent stress decreases. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《西华大学学报(自然科学版)》浏览原始摘要信息 |
|
点击此处可从《西华大学学报(自然科学版)》下载全文 |
