The rheological behavior of pure molybdenum at a temperature range of 1150–1300 °C at an interval of 50 °C with strain rates ranging from 0.01 to 10 s⁻¹ is studied by means of an isothermal compression experiment. The obtained true stress–strain curves reflect the strong dependence of the flow stress on the deformation temperatures and strain rates. To accurately describe the rheological behavior, a classic Arrhenius‐type equation is utilized for verification, which has been developed to consider the strain compensation. The results show that the modified constitutive equation has the ability to accurately predict performance. Meanwhile, processing maps of pure molybdenum under strains of 0.3, 0.4, 0.5, and 0.6 are also constructed and the deformation safety in different domains is discussed in conjunction with the metallographic structure. The deformation conditions at a temperature range of 1250–1300 °C and a strain rate of 0.01–0.23 s⁻¹ are the optimal hot working parameters under a strain of 0.6, which creates a foundation for the effective hot forming of molybdenum.

中文翻译：

---

考虑应变补偿的纯钼高温流变行为

纯钼在1150–1300°C的温度范围内（以50°C的间隔）的流变行为，应变速率为0.01到10 s ^-1通过等温压缩实验研究。所获得的真实应力-应变曲线反映了流动应力对变形温度和应变率的强烈依赖性。为了准确地描述流变行为，使用了经典的Arrhenius型方程式进行验证，该方程式已考虑应变补偿。结果表明，改进的本构方程具有准确预测性能的能力。同时，还绘制了纯钼在0.3、0.4、0.5和0.6应变下的加工图，并结合金相组织讨论了在不同区域的变形安全性。在1250–1300°C的温度范围和0.01–0.23 s ^-1的应变速率下的变形条件 是在0.6应变下的最佳热加工参数，这为钼的有效热成形奠定了基础。