Modeling the effect of oxidation on damage in SiC/Ti-15-3 metal matrix composites

Journal Article · Fri Jul 01 00:00:00 EDT 1994 · Journal of Engineering Materials and Technology; (United States)

DOI:https://doi.org/10.1115/1.2904308· OSTI ID:6931789

Wittig, L A; Allen, D H ^[1]

---

1. Texas A M Univ., College Station, TX (United States). Center for Mechanics of Composites

In this paper, a micromechanical analysis is performed on a single ply continuous fiber SiC/Ti-15V-3Al-3Sn-3Cr (Ti-15-3) metal matrix composite to study the complex interactions between the composite microstructural components and the surrounding environment at high temperatures. Finite elements are incorporated to model oxygen diffusing into the free surface of a representative volume element (RVE) during cool down from the processing temperature. The resulting residual stress distribution is investigated assuming thermoelastic material models for the matrix, oxide layer, and fiber. Results indicate that the oxidized surface layer is prone to cracking upon subsequent mechanical loading, and this effect is strongly temperature dependent.

• OSTI ID: 6931789
• Journal Information: Journal of Engineering Materials and Technology; (United States), Journal Name: Journal of Engineering Materials and Technology; (United States) Vol. 116:3; ISSN 0094-4289; ISSN JEMTA8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
360604* -- Materials-- Corrosion
Erosion
& Degradation
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COMPOSITE MATERIALS
FAILURES
MATERIALS
MATHEMATICAL MODELS
MICROSTRUCTURE
OXIDATION
RESIDUAL STRESSES
SILICON CARBIDES
SILICON COMPOUNDS
STRESSES
TIN ALLOYS
TITANIUM ALLOYS
TITANIUM BASE ALLOYS
VANADIUM ALLOYS