Fatigue in metallic alloys containing non-metallic particles

J.F. Knott, J.E. King

    Research output: Contribution to journalArticlepeer-review


    This paper examines the effects of non-metallic particles on fatigue performance and, in particular, their influence on fatigue crack propagation at high ΔK (Kmax) levels. The nature and properties of a number of common non-metallic particles found in Fe- and Al- based alloys are described, and consideration is given to the consequences of mismatch of physical and chemical properties between particle and matrix. Effects of particles on fatigue in conventional alloys are illustrated and compared with the behaviour of Al/SiCp MMC. The problems associated with developing particulate reinforced MMC with adequate fatigue crack growth resistance and toughness for structural applications are discussed. © 1991.

    Original languageEnglish
    Pages (from-to)67-74
    Number of pages8
    JournalMaterials and Design
    Issue number2
    Publication statusPublished - Apr 1991


    • materials science
    • fatigue metals and alloys
    • fatigue crack growth
    • fracture toughness
    • strain field
    • strengthening precipitates
    • metallurgy


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