The effect of structural defects in SiC particles on the static & dynamic mechanical response of a 15 volume percent SiC/6061-Al matrix composite

Technical Report · Fri Sep 01 00:00:00 EDT 1995

DOI:https://doi.org/10.2172/109675· OSTI ID:109675

Vaidya, R U; Song, S G; Zurek, A K; Gray, III, G T

Static and Dynamic mechanical tests, and microstructural examinations performed on a SiC particle reinforced 6061-Al matrix composite indicated that particle cracking significantly affected the strength, strain hardening, and failure mechanism of the composite. Cracks were observed to nucleate and propagate on stacking faults and interfaces between the various phases within the reinforcing SiC particles. Planar defects were the predominant artifacts seen in the SiC particles. Partial dislocations were also observed bounding the stacking faults within the reinforcement phase.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 109675
• Report Number(s): LA-UR-95-2884; CONF-950846-62; ON: DE96000004
• Resource Relation: Conference: American Physical Society biennial conference on shock compression of condensed matter, Seattle, WA (United States), 13-18 Aug 1995; Other Information: PBD: [1995]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
YOUNG MODULUS
ELASTICITY
TENSILE PROPERTIES
COMPRESSIBILITY
COMPRESSION STRENGTH
ULTIMATE STRENGTH
FRACTURE PROPERTIES
STACKING FAULTS
CRYSTAL DEFECTS
EXPERIMENTAL DATA
ALUMINIUM ALLOYS
CORRELATIONS