S101 Effects of sudden strain rate change on the microstructural evolution in Superalloy 718

摘要

During industrial hot working, material within billets generally undergoes complex varying thermal-mechanical conditions. Transient change in strain rate could be as high as one magnitude or even higher due to the complex shape of billets. Therefore, it is of great importance to study the hot deformation behavior under varying thermalmechanical conditions. However, most of the relevant researches currently mainly focus on flow behavior. The microstructural evolution under the corresponding conditions is somehow not much documented. Thus, in the current study, the effects of sudden strain rate change on the microstructural evolution are presented.