Hot deformation behavior of the 30%Mo/Cu-Al2O3 composite prepared by vacuum hot-pressed sintering

Hot deformation behavior of the 30%Mo/Cu-Al2O3 composite was investigated by hot compression tests on Gleeble-1500D thermal simulator in the temperature ranges of 450 similar to 750 degrees C and the strain rate ranges of 0.01 similar to 5s(-1), as the total strain is 0.7. The results show that the peak stress increases with the decreased deformation temperature or the increased strain rate. Based on the true stress-strain curves, the established constitutive equation represents the high-temperature flow behavior of the composite, and the calculated flow stresses are in good agreement with the high-temperature deformation experimental results.