The hot deformation behaviors and constitutive modeling of Hastelloy C276

Abstract Hastelloy C276 is widely used in the new generation of nuclear power plants, and hot deformation optimum way to form part. In this investigation, constitutive modeling alloy are researched, processing maps drawn. The results show that strain rate temperature have remarkable impacts on behaviors alloy. yield behavior flow stress predicted based Arrhenius equation, correlation coefficients 0.9613 0.9837, indicating high prediction ability established equation. Rising can decrease unstable area, studied be deformed at low rates. With increased rate, localization occurs, which not suitable for deformation.