Effect of thermal treatment on the mechanical and toughness properties of extruded SiC/sub w/aluminum 6061 metal-matrix composite. Final report
Mechanical, instrumented Charpy V-notch (CVN) energy and plane strain fracture-toughness properties of SiC whisker reinforced 6061 aluminum-metal-matrix composite material from an extruded tube were determined. The effect of thermal treatment and orientation were studied. The mechanical-strength properties are higher than wrought Al 6061 in the T6 condition. CVN energy values, however, were reduced by an order-of-magnitude Kic fracture toughness of the as-received, T6 and degassed + T6 thermal treatments were 50% of the wrought Al 6061 alloy. The effect of orientation showed that the orientation with the least amount of SiC whisker in the crack plane (i.e., greatest mean free path between reinforcements) yields the highest toughness value.
- Research Organization:
- Naval Surface Weapons Center, Silver Spring, MD (USA). White Oak Lab.
- OSTI ID:
- 6910607
- Report Number(s):
- AD-A-193207/8/XAB; NSWC-TR-86-72
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
CRACKS
DOCUMENT TYPES
EXTRUSION
FABRICATION
MATERIALS
MATERIALS WORKING
MATRIX MATERIALS
MEAN FREE PATH
MECHANICAL PROPERTIES
PROGRESS REPORT
SILICON CARBIDES
SILICON COMPOUNDS