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Response of aluminum alloys to erosive particle impacts

Conference ·
OSTI ID:5650168
; ; ;
Erosive particle impacts can result in the high-strain-rate deposition of an appreciable amount of energy into the defromed 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 analyticaly 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. 29 refs., 6 figs., 1 tab.
Research Organization:
Oak Ridge National Lab., TN (USA)
DOE Contract Number:
AC05-84OR21400
OSTI ID:
5650168
Report Number(s):
CONF-880314-2; ON: DE88005910
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360104 -- Metals & Alloys-- Physical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
ELECTRON MICROSCOPY
EROSION
FOSSIL-FUEL POWER PLANTS
FUNCTIONS
HARDENING
HARDNESS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEATING
IMPACT SHOCK
IMPACT TESTS
IRON ALLOYS
IRON BASE ALLOYS
LINE DEFECTS
MATERIALS
MATERIALS TESTING
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
MECHANICAL TESTS
MICROSCOPY
MICROSTRUCTURE
NICKEL ALLOYS
PHYSICAL PROPERTIES
POWER PLANTS
RESPONSE FUNCTIONS
SCANNING ELECTRON MICROSCOPY
STAINLESS STEEL-310
STAINLESS STEELS
STEELS
STRAIN HARDENING
TEST FACILITIES
TESTING
THERMAL POWER PLANTS
THERMAL SHOCK