Erosion in dual-phase microstructures: Final report

Technical Report · Mon Dec 07 00:00:00 EST 1987

OSTI ID:5614330

Kosel, T H

This project was designed to provide a systematic investigation of the effects of microstructural variables on particle impact erosion of two-phase metallic alloys containing large second-phase particles (SPPs). Commercial alloys that contain large hard carbides, such as high Cr-Mo white cast irons and Stellite alloys are known to be highly abrasion resistant. Since there are many similaries between abrasion and erosion, it was felt that a systematic examination of the erosion behavior of such alloys would be useful, especially since existing literature on the subject seemed to indicate that they offered little advantage in erosion. Work was divided into two major sections, on erosion of commercial alloys and of model alloys having artificial SPPs like Al/sub 2/O/sub 3/ dispersed in a Cu matrix. The model alloys allowed control of SPP size and second-phase volume fraction (SPVF), and permitted experiments comparing the erosion rates of the dispersed alloys with those of the pure phases. Under the wide range of erosion conditions investigated, this type of alloy offered no significant improvement of erosion resistance over simple, inexpensive low-carbon steels. This was concluded to be the result of the phenomenon of edge spalling from the edges of the SPPs, which was investigated in some detail. 18 refs., 29 figs., 4 tabs.

• Research Organization: Notre Dame Univ., IN (USA). Dept. of Materials Science and Engineering
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5614330
• Report Number(s): ORNL/Sub-83-43336/01; ON: DE88004507
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
EROSION
MICROSTRUCTURE
ABRASION
ABRASIVES
ALUMINIUM OXIDES
CARBIDES
CAST IRON
CHROMIUM ALLOYS
COMPARATIVE EVALUATIONS
COPPER
EROSION CONTROL
LAYERS
MATHEMATICAL MODELS
MATRIX ELEMENTS
MOLYBDENUM ALLOYS
PARTICLE SIZE
PROGRESS REPORT
QUARTZ
STELLITE
TIME-OF-FLIGHT METHOD
TUNGSTEN CARBIDES
VELOCITY
ALUMINIUM COMPOUNDS
CARBON COMPOUNDS
CHALCOGENIDES
COBALT ALLOYS
COBALT BASE ALLOYS
CONTROL
CRYSTAL STRUCTURE
DOCUMENT TYPES
ELEMENTS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
IRON CARBIDES
IRON COMPOUNDS
MATERIALS
METALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
SIZE
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TUNGSTEN ALLOYS
TUNGSTEN COMPOUNDS
360105* - Metals & Alloys- Corrosion & Erosion
360102 - Metals & Alloys- Structure & Phase Studies