A Temperature Sensitive Crystal Plasticity Model for the Prediction of High Temperature Mechanical Behaviour of Multi-Phase Tial Alloy

Abstract

Intermetallic TiAl alloys for aero-engine turbine blade applications show good thermomechanical properties and excellent creep resistance. These alloys consist of multiphase intermetallic constituents, mainly of γ-TiAl and α2-Ti3Al intermetallic phases, which are arranged in the form of lamellar colonies and globular grains. Characterizing these alloys for room and high temperature behaviour is an ongoing issue that needs to be solved by using a synergic approach of experimental and numerical methods.