This article reports the effects of friction on the flow stress-strain curve obtained from uniaxial compression test. Uniaxial compression test was done at deformation temperature range of 575 C–650 C and strain rates of 0.001 s⁻¹, 0.01 s⁻¹, 0.1 s⁻¹ and 0.5 s⁻¹ to a strain of 0.6 using Gleeble 3500 thermo-mechanical simulator. The friction parameter was calculated by using the analytical equation from the literature. The study reports the flow stress-strain curve results. The results showed a variation between the measured and the friction corrected flow stress-strain curves. The flow stress variation increased with an increase in strain. This result shows an increase in friction parameter resulting from contact between the die and the workpiece during deformation. The study has shown that the analytical equations used for hot deformation are applicable in analysing warm deformation flow stress-strain curves.

本文报告了摩擦对从单轴压缩试验获得的流动应力-应变曲线的影响。使用 Gleeble在 575 C–650 C 的变形温度范围和 0.001 s ^-1、0.01 s ^-1、0.1 s ^-1和 0.5 s ^-1应变速率下进行单轴压缩试验，应变为 0.63500 热机械模拟器。摩擦参数使用文献中的解析方程计算。该研究报告了流动应力-应变曲线结果。结果显示测量的和摩擦校正的流动应力-应变曲线之间存在差异。流变应力随应变的增加而增加。该结果表明，在变形过程中模具和工件之间的接触会导致摩擦参数增加。研究表明，用于热变形的解析方程适用于分析热变形流动应力-应变曲线。