Erosion of multiphase materials. [Al/sub 2/O/sub 3/ rods-304 ss matrix]

Conference · Sun Jan 01 00:00:00 EST 1984

OSTI ID:6035781

Anand, K; Morrison, C; Scattergood, R O; Conrad, H; Routbort, J L; Warren, R

Erosion rate measurements were made for a series of WC-Co alloys with varying WC-Co grain size and for a fully aligned composite consisting of Al/sub 2/O/sub 3/ rods in a stainless steel matrix. The microstructure in these multiphase alloys, each containing a brittle and ductile component, has a significant effect on the erosion behavior. In WC-Co alloys, the erosion rate vs angle-of-incidence curves change from a brittle to a ductile signature as the impacting abrasive particle size or particle velocity are increased using target samples with finer WC grain sizes. In the composite, the curves change from a ductile to a brittle signature as the particle size is increased. These effects are attributed to the change in scale of the impact damage event relative to the scale of the microstructure in WC-Co alloys. At small WC grain size, a constraint is imposed on the brittle-fracture erosion process that occurs in the WC grains. For the composite, the microstructural scale is always large and the behavior is due to the relative change in erosion rates for the two components without constraints due to the microstructural scale.

• Research Organization: North Carolina State Univ., Raleigh (USA). Dept. of Materials Engineering; Argonne National Lab., IL (USA); Chalmers Tekniska Hoegskola, Goeteborg (Sweden). Dept. of Engineering Materials
• DOE Contract Number: FG05-84ER45115
• OSTI ID: 6035781
• Report Number(s): CONF-8409117-1; ON: DE85008895
• Resource Relation: Conference: 2. international conference on the science of hard materials, Rhodes, Greece, 23 Sep 1984
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT ALLOYS
EROSION
COMPOSITE MATERIALS
TUNGSTEN CARBIDES
ALUMINIUM OXIDES
MICROSTRUCTURE
STAINLESS STEEL-304
ALLOYS
ALUMINIUM COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NICKEL ALLOYS
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
STAINLESS STEELS
STEELS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
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