Residual stress studies in ti-6Al-4V alloy

Project aim

To develop and validate a thermo-metallo-mechanical (TMM) model for the prediction of residual stress in heat-treated Ti-6Al-4V alloy with consideration for microstructural variations and accompanying constitutive relations.

Project background

A great body of literature exists on the generation and evolution of thermo-mechanically induced residual stress in aluminium alloys, steels and nickel based superalloys. However, limited studies concerning the heat treatment-induced residual stress evolution in titanium alloys exist. The increasingly high numbers of structural parts and engineering components in aircraft with important sizes and geometries that are made from titanium makes this area of research very attractive for the aerospace industry.