Response of aluminum alloys to erosive particle impacts

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5614442

Keiser, J R; Heidersbach, R S; Dobbs, D L; Oliver, W C

Erosive particle impacts can result in the high-strain-rate deposition of an appreciable amount of energy into the deformed volume of the target material. This energy likely causes local heating; softening or even melting has been observed in many materials. Hardening caused by the high-strain-rate deformation has also been reported for strain-hardenable materials. The effect of individual impacts on the surface of selected aluminum alloys was determined both analytically using theoretical considerations and experimentally using 343-{mu}m-diam tungsten carbide balls impacting at about 30 m/s and 30{sup 0} incidence angle. After impact a mechanical properties microprobe was used to measure the hardness of both the crater bottom and material just below the original surface. Strain hardening, but no evidence of softening, was observed for two aluminum alloys.

• OSTI ID: 5614442
• Report Number(s): CONF-880314--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
CORROSIVE EFFECTS
EROSION
HARDENING
HARDNESS
MECHANICAL PROPERTIES
PARTICLES
PARTICULATES
REFRACTORY METAL COMPOUNDS
STRAIN HARDENING
TEMPERATURE EFFECTS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN CARBIDES
TUNGSTEN COMPOUNDS