Mechanical Behavior and Microstructure Evolution during Cold Deformation and Solution Treatment of IN718 Alloy

Abstract

IN718 alloy possesses excellent mechanical properties from room temperature to 650 °C and good processability; therefore, it has been widely used in turbine-engines and aircraft fasteners. Work hardening is an important strengthening method for this alloy. In this paper, the cold deformation behavior of IN718 alloy, including stress-strain curves, the constitutive relationship, and the microstructural evolution were investigated through room-temperature compression testing with strain rates from 0.1~1 s-1 and engineering strains from 10% ~ 40%.