LAUSR

ABSTRACT Tensile flow behaviour attracts a continue attention in enhancing material processing and ensuring secure performance during metal forming processes. In present study, tensile deformation behaviour of Inconel 718 alloy have been investigated from room temperature (RT) to 700°C, strains (from 0.01 to 0.3 with interval of 0.01) at strain rates of 0.0001-0.01 s−1. From experimental observation, it is observed that flow stress behaviour was considerably influences by temperature and strain rate variation. Additionally, constitutive models, mainly Khan–Huang–Liang (KHL) and modified Fields–Backofen (mFB) models have developed to predict flow stress behaviour. Statistical parameters, mainly average absolute error (Δ), correlation coefficient (R) and root mean square error (s), have been evaluated the prediction capability of models. KHL model has given highest coefficient of correlation (R = 0.9182); this signifies suitability of KHL model for flow prediction of Inconel 718 alloy.