Modelling Materials Properties critical to Simulation of Thermomechanical Processing in Titanium Alloys

摘要

This paper reviews the development of materials models that are able to calculate the material data required in the computer-aided engineering (CAE) simulation of thermomechanical processing in titanium alloys,including:-Time-temperature transformation (TTT) and continuous-cooling transformation (CCT) diagrams;-Physical and thermophysical properties,e. g. density,thermal conductivity, Young's modulus,and specific heat;-Temperature and strain rate dependent mechanical properties, including high temperature strength and flow stress curves. All the materials models developed have been implemented in the computer software JMatPro so that they can be easily used by process modellers. The material data calculated can now be organised in such a format that can be directly read by commercial CAE simulation packages for casting,forging, welding and heat treatment simulation.