THE THERMO-PHYSICAL AND MECHANICAL PROPERTY PREDICTION OF MULTICOMPONENT ALLOYS BY THE COUPLING OF MACRO-MICROMODELING AND COMPUTATIONAL THERMODYNAMICS

摘要

Part of the challenge of designing a new alloy is the understanding of the relationships between the alloy chemistry, the processing, and the final properties of an in-service part made from that alloy. The prediction of local mechanical properties is possible, to a degree, given knowledge of the microstructure, phase fractions, and defects present in a metallic part. It is critical to have accurate thermo-physical properties as input for reliable simulations of the complex solidification and solid phase transformation processes. The thermo-physical properties can be predicted with the help of thermodynamic calculations at given temperatures and compositions. Multi-component macro/micro models of solidification, coupled with thermodynamic calculations, form the basis of the mechanical property predictions and are integrated into ProCAST.