Matrix and Interface Deformation in High Temperature Intermetallic Compounds andComposites

摘要

This project is concerned with the experimental and theoretical study ofdeformation and fracture mechanisms in MoSi(2) and TiAl alloy materials and of interfaces between these alloys. Past work has included (1) identifying dominant deformation mechanisms in MoSi2, (2) predicting the geometric hardening for suggested slip systems in MoSi2, and (3) finite element simulations of the deformation in intermetallic compounds (TiAl, MoSi2) pertaining to the microstructural subtleties in polycrystalline aggregates. More recent work has been concerned with the modeling of lamella microstructures in Ti3Al/TiAl and TiAl alloys. In particular, the framework has been created to perform detailed modeling of deformation processing in TiAl alloys. jg p1.