Impact behavior of extrinsically toughened discontinuously reinforced aluminum composites
Book
·
OSTI ID:490778
- Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Mechanical and Aerospace Engineering
Discontinuously reinforced aluminum (DRA) composites with enhanced fracture toughness have recently been developed at Alcoa. The approach consists of producing a composite microstructure in which discrete ductile phases have been incorporated into the DRA through traditional powder processing routes. In the present paper, the high strain rate behavior of these toughened composites is investigated by obtaining (1) the dynamic flow characteristics at various levels of elevated strain rates using a split Hopkinson compression bar, and (2) energy absorption during dynamic crack initiation and crack propagation using three-point bend specimens loaded on a modified Hopkinson bar configuration.
- OSTI ID:
- 490778
- Report Number(s):
- CONF-960401--; ISBN 1-55899-337-1
- Country of Publication:
- United States
- Language:
- English
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