Cyclic stress-strain behavior of particle reinforced metal matrix composites

Journal Article · Tue Apr 14 04:00:00 EDT 1998 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(98)00067-0· OSTI ID:619508

Chawla, N; Andres, C; Jones, J W ^[1]; Allison, J E ^[2]

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1. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
2. Ford Motor Co., Dearborn, MI (United States). Ford Research Lab.

Particle reinforced metal matrix composites (MMCs) have generated a significant amount of interest due to their high strength, stiffness, weight savings and higher operating temperatures compared to conventional engineering materials. By the addition of a relatively inexpensive ceramic particulate reinforcement, such as SiC, to conventional aluminum alloys, a substantial decrease in CTE and an increase in modulus and fatigue resistance can be achieved while maintaining cost at an acceptable level. A number of studies have examined the monotonic stress-strain behavior of particle reinforced Al, as well as the cyclic stress-strain behavior of these materials. In this study, the authors have compared the cyclic stress-strain hysteresis behavior of the composite to that of the unreinforced alloy at different stress levels. The effect of reinforcement volume fraction on total and plastic strain accumulated during fatigue was also examined. The implications of these findings regarding fatigue mechanisms are discussed.

• OSTI ID: 619508
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 10 Vol. 38; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
FATIGUE
REINFORCED MATERIALS
SILICON CARBIDES
STRAINS
STRESSES