Influence of Processing Parameters on the Deformation Behavior of Ti14 Alloy Containing a Small Volume of Liquid |
| |
Authors: | Chen Yongnan Wei Jianfeng Zhao Yongqing Ma Xuedan and Hao Jianmin |
| |
Affiliation: | 1 Chang’an University, Xi’an 710064, China; 2 State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China; 3 Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China |
| |
Abstract: | The effects of the processing parameters on the deformation behavior of Ti14 alloy containing a small volume of liquid have been investigated through compressive tests. Experiments were conducted at deformation temperatures from 1000 to 1150 °C, strain rates from 5×10-3 to 5 s-1 and deformation degrees from 40% to 70%. The results show that deformation temperature and strain rate have significant effects on the peak flow stress. The flow stress decreases with increasing of deformation temperature and/or decreasing of strain rate. The response time required by deformation is affected by the strain rate and liquid fraction is controlled by the temperature. As the temperature increases, deformation mechanism transforms from sliding between solid particles (SS) to the flow of liquid incorporating solid particles (FLS), which improves the semi-solid deformation behavior. In addition, the flow stress decreases with increasing of deformation degrees during the compression which is associated with lubricating effect of liquid during semi-solid deformation. |
| |
Keywords: | semi-solid Ti14 alloy deformation behavior microstructure |
本文献已被 CNKI 万方数据 等数据库收录! |
| 点击此处可从《稀有金属材料与工程》浏览原始摘要信息 |
|
点击此处可从《稀有金属材料与工程》下载全文 |
|