期刊文献+

Ti-62222钛合金热变形行为及变形组织研究

Deformation Behavior and Microstructure Evolution of the Ti-62222 Alloy During Hot Deformation
下载PDF
导出
摘要 以Ti-62222钛合金为研究对象,对该合金热压缩过程中的变形行为及显微组织演变规律进行了研究。结果表明,Ti-62222钛合金的真应力-真应变曲线总体呈应变软化型,曲线在应变较小时出现峰值。流动应力随着应变值的升高而下降,随应变速率的增大及变形温度的减小而增大。而对其热变形组织的研究发现,随着温度的升高,合金中α相含量减小,β相含量增加,同时α相球化率升高。在大变形量的情况下,α相含量与变形量呈负相关,即变形量越大,α相含量越少;α相球化率随着变形量增大而显著提高。当应变速率处于较高水平时,α相含量随应变速率升高而降低;应变速率对片层α相球化有抑制作用,球化率随应变速率增大而减小。 Focusing on a Ti-62222 titanium alloy,the deformation behavior and evolution of the microstructure during hot compression were investigated.The results indicate that the true stress-true strain curve of the Ti-62222 titanium alloy generally exhibits strain softening,with a peak appearing at a low strain,followed by a decrease in the flow stress as the strain increases.The flow stress increases with increasing strain rate and decreasing deformation temperature.Research on the hot deformation microstructure reveals that as the temperature rises,the content of theαphase in the alloy decreases,whereas the content of theβphase increases,and the globularization rate of theαphase increases.Under conditions of large deformation,the content of theαphase is negatively correlated with the deformation amount,meaning that the greater the deformation is,the lower the content of theαphase.The globularization rate of theαphase significantly increases with increasing deformation amount.When the strain rate is high,the content of theαphase decreases with increasing strain rate.The strain rate has an inhibitory effect on the globularization of the lamellarαphase,and the globularization rate decreases as the strain rate increases.
作者 董瑞峰 郭宇墨 贾慕臻 李晨晖 周琱玉 武立 侯华 赵宇宏 DONG Ruifeng;GUO Yumo;JIA Muzhen;LI Chenhui;ZHOU Diaoyu;WU Li;HOU Hua;ZHAO Yuhong(Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials,School of Materials Science and Engineering,North University of China,Taiyuan 030051,China;School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China)
出处 《铸造技术》 CAS 2024年第10期945-952,共8页 Foundry Technology
基金 山西省重点研发计划(202102050201011,202202050201014) 山西省基础研究计划(202103021224178,202403021211063,202203021211104)。
关键词 Ti-62222钛合金 热变形行为 Α相 组织演变 Ti-62222 titanium alloys hot deformation behavior αphase microstructure evolution
  • 相关文献

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部