Study on Hot Deformation Behavior of Cr20Ni32AlTi Alloy at High-temperature
By Gleeble-3800 thermo-mechanical simulator,the hot deformation behavior and microstructure evolution of Cr20Ni32AlTi alloy at different temperatures and strain rate was investigated.The effects of hot deformation parameters on the stress and microstructure were discussed.The results show that Cr20Ni32AlTi alloy has good plasticity.Its softening mechanism varies with Zener-Hollomon parameter(abbreviated Z) in the above mentioned deformation conditions.Based on this,the hot deformation equation is set up,the apparent stress exponent is about 6.37,and the apparent activation energy(Q) is 491.032 kJ/mo1;and the peak stress of hot deformation increases with the increase of Z parameter.