Hot Deformation Behavior of Al2O3/Cu-10vol%WC Composite
The hot deformation behavior of the Al2O3/Cu-10vol%WC composite is investigated by isothermal compression test on a Gleeble 1500D thermal-mechanics simulator at the temperature ranges from 350°C to 750°C and the strain rate ranges from 0.01s-1 to 5s-1. The results show that high-temperature flow stress-strain curves of Al2O3/Cu-WC composites have typical features of the softening mechanism of dynamic recovery and dynamic recrystallization. The peak stress increases with the decreasing of deformation temperature or the increasing of strain rate. The hyperbolic-sine type equation shows good agreement with the experimental stress. Upon the basis of the above experimental results, the activation energy of the composite is calculated as 208.34kJ/mol.
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
J. Feng et al., "Hot Deformation Behavior of Al2O3/Cu-10vol%WC Composite", Applied Mechanics and Materials, Vols. 117-119, pp. 921-924, 2012