Micromechanisms of fatigue crack growth and fracture toughness in metal-matrix composites. Interim technical report, 31 July-31 October 1987
Technical Report
·
OSTI ID:5573387
Fracture toughness of several composites of aluminum alloys reinforced with particulate SiC was measured. Variables were particle size and volume fraction, and matrix alloy composition and heat treatment. Fracture surface profiles were measured and related to fractile dimension using the techniques of quantitive metallography. Fracture surface roughness was described well by fractals, but fracture toughness did not correlate with any measure of fracture roughness. An explanation for this behavior is offered.
- Research Organization:
- Southwest Research Inst., San Antonio, TX (USA)
- OSTI ID:
- 5573387
- Report Number(s):
- AD-A-186941/1/XAB; SWRI-06-8602
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
CRACK PROPAGATION
CRYSTAL STRUCTURE
DOCUMENT TYPES
FATIGUE
FRACTURE PROPERTIES
MACHINING
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
METALLOGRAPHY
MICROSTRUCTURE
PARTICLES
PROGRESS REPORT
ROUGHNESS
SILICON CARBIDES
SILICON COMPOUNDS
SURFACE PROPERTIES
SURFACES
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
CRACK PROPAGATION
CRYSTAL STRUCTURE
DOCUMENT TYPES
FATIGUE
FRACTURE PROPERTIES
MACHINING
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
METALLOGRAPHY
MICROSTRUCTURE
PARTICLES
PROGRESS REPORT
ROUGHNESS
SILICON CARBIDES
SILICON COMPOUNDS
SURFACE PROPERTIES
SURFACES