The thermal compression test of as-cast Ni-Cr-Al alloy was performed under the deformation temperatures ranging from1 000℃to 1 150℃and strain rates between 0.01s-1 and 1s-1 on a MMS-200 thermal simulation test machine.Based on the rheology data obtained under various deformation conditions,a strain-compensated Arrhenius constitutive equation and a hot working diagram were developed to characterize the alloy's rheologic behavior.Through analysis of the hot deformation microstructure and reference of the hot working diagram,the optimal hot working area for as-cast Ni-Cr-Al alloy is 1 020～1 080℃with a strain rate of 0.15～1 s-1.
关键词
铸态Ni-Cr-Al合金/本构方程/热变形/热加工图
Key words
as-cast Ni-Cr-Al alloy/constitutive equation/hot deformation/hot working diagram
维普
万方数据