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Hot deformation behavior and microstructure evolution of TC4 titanium alloy 被引量:22

Hot deformation behavior and microstructure evolution of TC4 titanium alloy
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摘要 The hot deformation behavior of Ti-6Al-4V (TC4) titanium alloy was investigated in the temperature range from 650℃ to 950℃ with the strain rate ranging from 7.7×10^-4 s^-1 to 7.7×10^-2 s^-1. The hot tension test results indicate that the flow stress decreases with increasing the deformation temperature and increases with increasing the strain rate. XRD analysis result reveals that only deformation temperature affects the phase constitution. The microstructure evolution under different deformation conditions was characterized by TEM observation. For the deformation of TC4 alloy, the work-hardening is dominant at low temperature, while the dynamic recovery and dynamic re-crystallization assisted softening is dominant at high temperature. The hot deformation behavior of Ti-6Al-4V(TC4) titanium alloy was investigated in the temperature range from 650 °C to 950 °C with the strain rate ranging from 7.7×10-4 s-1 to 7.7×10-2 s-1.The hot tension test results indicate that the flow stress decreases with increasing the deformation temperature and increases with increasing the strain rate.XRD analysis result reveals that only deformation temperature affects the phase constitution.The microstructure evolution under different deformation conditions was characterized by TEM observation.For the deformation of TC4 alloy,the work-hardening is dominant at low temperature,while the dynamic recovery and dynamic re-crystallization assisted softening is dominant at high temperature.
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第11期2181-2184,共4页 中国有色金属学报(英文版)
关键词 TC4 titanium alloy flow stress hot tension MICROSTRUCTURE TC4钛合金 热变形行为 组织演变 X射线衍射分析 透射电镜观察 变形温度 TC4合金 动态再结晶
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