Archives of Metallurgy and Materials

Abstract

Suitable and complete sets of stress-strain curves significantly affected by dynamic recrystallization were analyzed for 11 different iron, copper, magnesium, titanium or nickel based alloys. Using the same methodology, apparent hot deformation activation energy Q p and Q ss values were calculated for each alloy based on peak stress and steady-state stress values. Linear dependence between quantities Q p and Q ss was found, while Q p values are on average only about 6% higher. This should not be essential in predicting true stress of a specific material depending on the temperature-compensated strain rate and strain.