摘要
以单相近β钛合金Ti-35V-15Cr-0.15Si-0.05C为研究对象,利用计算机辅助设计软件对合金循环变形中的平面滑移行为进行研究,分析平面滑移行为的产生机理。结果表明,随着循环周次的增加,钛合金塑性变形能量增大,滑移线周围开始有裂纹产生。应力的提高以及合金中纳米级颗粒的出现都有利于平面滑移的发生。钛合金变形过程中基体中的位错密度不断下降,并伴有位错残余的产生,且滑移线始终并行不交叉。
The plane slip behavior of Ti-35V-15Cr-0.15Si-0.05C titanium alloy was studied, and the slip mechanism was analyzed. The results show that, with the increase of cycles, plastic deformation energy of the titanium alloy increases, and the cracks begin to appear around slip line. The stress and nanoparticles are conducive to the occurrence of slip plane. In the process of deformation, the dislocation densities in titanium alloy matrix decline with the generation of residual dislocations, and slip lines are not always parallel cross.
出处
《铸造技术》
CAS
北大核心
2016年第11期2476-2478,2483,共4页
Foundry Technology
基金
2015年陕西省教育厅科研计划项目(15JK1254)
渭南师范学院科研计划项目(15YKP002)
渭南师范学院大学生创新创业训练计划项目(16XK053)
