Microstructural effects in abrasive wear. Year-end summary report, March 15, 1977--March 15, 1978
Research in the first nine months of this project has centered in developing low-stress and gouging wear test techniques. Tests in alloy white irons have indicated that microstructure plays a strong role in establishing a materials wear resistance. Various mechanical parameters, such as fracture toughness or rolling fatigue resistance, do not correlate well with abrasive wear resistance. In the last three months of the research wear testing has been expanded to include SiO/sub 2/ and Al/sub 2/O/sub 3/ abrasives in the low-stress test. The abrasive has a strong effect in the magnitude of the weight loss and on the relative rank of wear resistance of various microstructural forms of an alloy. The abrasive degrades during wear testing, and the degraded abrasive may attack the target alloy differently than does the fresh abrasive. Microtopography appears to have limited use in elucidating wear mechanisms. Finally, wear testing of the Co-base PM alloys has been initiated and in general increasing carbide volume fraction and/or matrix solid-solution strengthener content increases wear resistance.
- Research Organization:
- Notre Dame Univ., South Bend, IN (USA). Dept. of Metallurgical Engineering and Materials Science
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 6628908
- Report Number(s):
- COO-4246-4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Microstructural effects in abrasive wear. Quarterly progress report for the period 15 June 1978--15 September 1978
Microstructural effects in abrasive wear. Quarterly progress report, 15 September--15 December 1977
Related Subjects
360105* -- Metals & Alloys-- Corrosion & Erosion
ABRASION
ABRASIVES
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CAST IRON
CHALCOGENIDES
CHROMIUM ALLOYS
COBALT ALLOYS
COBALT BASE ALLOYS
CRYSTAL STRUCTURE
HARDNESS
IRON ALLOYS
IRON BASE ALLOYS
IRON CARBIDES
IRON COMPOUNDS
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROHARDNESS
MICROSTRUCTURE
NICKEL ALLOYS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
TESTING
TRANSITION ELEMENT COMPOUNDS
WEAR
WEAR RESISTANCE