Influence of reversion austenite on fatigue strength of shot-peened maraging steel

M. Moriyama, T. Nagano, N. Kawagoishi, S. Takaki

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    A maraging steel has low fatigue strength for its high static strength. In the present study, the influences of shot peening and reversion austenite on fatigue strength of a marging steel were investigated to achieve the improvement of fatigue strength of the steel. By shot peening, fatigue strength was markedly increased and fracture mode changed in order of surface, combined type of surface and interior and interior fractures with decrease of the stress level. Fatigue strength in the surface fracture region was still increased by double shot peening which improved the surface integrity i.e. surface roughness, hardness and compressive residual stress. On the other hand, fatigue strength in the interior fracture region was increased by the formation of reversion austenite where as it was not affected by the shot peening condition.

    Original languageEnglish
    Pages (from-to)1126-1132
    Number of pages7
    JournalZairyo/Journal of the Society of Materials Science, Japan
    Volume50
    Issue number10
    DOIs
    Publication statusPublished - Oct 2001

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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