Thermal cycling damage of metal matrix composites. Analytical study on dimensional change

Journal Article · Sat May 01 04:00:00 EDT 1993 · Applied Mechanics Reviews; (United States)

DOI:https://doi.org/10.1115/1.3120337· OSTI ID:5525267

Taya, Minoru ^[1]; Armstrong, W D ^[2]; Dunn, M ^[3]

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1. Univ. of Washington, Seattle, WA (United States)
2. Nagasaki R D Center (Japan)
3. Sandia National Lab., Albuquerque, NM (United States)

An analytical model to predict dimensional changes in thermal cycled metal matrix composites (MMCs) with and without constant stress is proposed. The present model assumes that the temperature-time relation to simulate thermal cycling is of a step-function type and the matrix metal deforms as elastic/plastic/creep material while the fiber remains elastic throughout thermal cycling. The model can explain well the experimental results of W-ThO[sub 2]/FeC[sub r]AlY composite during the early stage of cycling and those of the previous works. The present model is then compared with the existing ones including our previous model. Another model is also constructed to simulate the later stage of thermal cycling damage where the debonding of the matrix-fiber interface would presumably take place progressively with number of cycles. This model with a progressive debonded interface was found to explain reasonably well the later stage of dimensional changes observed in W-ThO[sub 2]/FeCrAlY composite. Then, the dimensional change in thermal cycled MMC under constant stress loading is studied by use of the above model for early (first) stage of thermal cycling that is modified to account for applied stress. This model can explain well the experimental results of W/Cu composite. 20 refs., 15 figs., 1 tab.

• OSTI ID: 5525267
• Journal Information: Applied Mechanics Reviews; (United States), Journal Name: Applied Mechanics Reviews; (United States) Vol. 46:5; ISSN AMREAD; ISSN 0003-6900
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ACTINIDE COMPOUNDS
ALLOYS
ALUMINIUM ALLOYS
CHALCOGENIDES
CHROMIUM ALLOYS
COMPOSITE MATERIALS
COPPER
ELEMENTS
IRON ALLOYS
MATERIALS
MATHEMATICAL MODELS
METALS
OXIDES
OXYGEN COMPOUNDS
STRESSES
THERMAL CYCLING
THORIUM COMPOUNDS
THORIUM OXIDES
TRANSITION ELEMENTS
TUNGSTEN
YTTRIUM ALLOYS