Accession Number : ADA305788

Title :   Matrix and Interface Deformation in High Temperature Intermetallic Compounds and Composites.

Descriptive Note : Final technical rept. 15 Sep 91-14 Sep 94,

Corporate Author : CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF THE AEROSPACE AND MECHANICAL ENGIN EERING SCIENCES

Personal Author(s) : Asaro, R. J.

PDF Url : ADA305788

Report Date : 10 APR 1995

Pagination or Media Count : 23

Abstract : This project is concerned with the experimental and theoretical study of deformation 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

Descriptors :   *INTERFACES, *COMPOSITE MATERIALS, *HIGH TEMPERATURE, *DEFORMATION, *MATRIX MATERIALS, *TITANIUM ALUMINIDE, *MOLYBDENUM ALLOYS, *INTERMETALLIC COMPOUNDS, SIMULATION, MICROSTRUCTURE, MODELS, MATERIALS, PROCESSING, FINITE ELEMENT ANALYSIS, ALLOYS, FRACTURE(MECHANICS), AGGREGATES(MATERIALS), GEOMETRY, HARDENING, SILICIDES, POLYCRYSTALLINE.

Subject Categories : Inorganic Chemistry
      Properties of Metals and Alloys
      Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE