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首页> 外文期刊>Journal of Materials Engineering and Performance >Elevated Temperature Mechanical Behavior of Severely Deformed Titanium
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Elevated Temperature Mechanical Behavior of Severely Deformed Titanium

机译：严重变形钛的高温力学行为

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摘要

In this investigation, compression tests were performed at a strain rate of 0.001-0.1 s~(-1) in the range of 600-900℃ to study the high temperature deformation behavior and flow stress model of commercial purity (CP) titanium after severe plastic deformation (SPD). It was observed that SPD via equal channel angular extrusion can considerably enhance the flow strength of CP titanium deformed at 600 and 700℃. Post-compression microstructures showed that, a fine grained structure can be retained at a deformation temperature of 600℃. Based on the kinematics of dynamic recovery and recrystallization, the flow stress constitutive equations were established. The validity of the model was demonstrated with reasonable agreement by comparing the experimental data with the numerical results. The error values were less than 5% at all deformation temperatures except 600℃.
机译：在这项研究中，以0.001-0.1 s〜（-1）的应变速率在600-900℃的范围内进行压缩试验，以研究工业纯（CP）钛在高温下的高温变形行为和流变应力模型。塑性变形（SPD）。观察到通过等通道角挤压的SPD可以显着提高在600和700℃下变形的CP钛的流动强度。压缩后的微观结构表明，在600℃的变形温度下可以保留细小的晶粒结构。基于动态恢复和再结晶运动学，建立了流变应力本构方程。通过将实验数据与数值结果进行比较，以合理的一致性证明了该模型的有效性。除600℃外，在所有变形温度下误差值均小于5％。

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