Thermally and mechanically induced residual strains in Al-SiC composites

Journal Article · Tue Sep 01 00:00:00 EDT 1992 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(92)90158-B· OSTI ID:7165014

Povirk, G L; Stout, M G; Bourke, M; Goldstone, J A; Lawson, A C; Lovato, M; Macewen, S R; Nutt, S R; Needleman, A ^[1]

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1. Brown University, Providence, RI (United States) Los Alamos National Laboratory, NM (United States) Alcan International, Ltd., Kingston (Canada)

Neutron diffraction experiments were conducted on 15 vol pct whisker and 20 vol pct particulate reinforced aluminum/silicon carbide composites subjected to a rapid quench followed by various deformation histories. Corresponding numerical simulations were carried out using an axisymmetric unit cell model, with a phenomenological, isotropic hardening description of matrix plasticity. For the whisker reinforced matrix, quantitative agreement was generally found between the measured and calculated residual elastic strains. For the particulate reinforced matrix, very good agreement was obtained transverse to the deformation axis. For the silicon carbide reinforcement, both whisker and particulate, the variation of predicted residual elastic strains along the deformation axis was qualitatively consistent with the measurements, although quantitative agreement was often acking. 39 refs.

• OSTI ID: 7165014
• Journal Information: Acta Metallurgica et Materialia; (United States), Journal Name: Acta Metallurgica et Materialia; (United States) Vol. 40:9; ISSN 0956-7151; ISSN AMATEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
COHERENT SCATTERING
COMPOSITE MATERIALS
COMPUTERIZED SIMULATION
CRYSTALS
DIFFRACTION
MATERIALS
MONOCRYSTALS
NEUTRON DIFFRACTION
RESIDUAL STRESSES
SCATTERING
SILICON CARBIDES
SILICON COMPOUNDS
SIMULATION
STRAINS
STRESSES
WHISKERS