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

M. Moriyama, T. Nagano, N. Kawagoishi, Setsuo 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 - Jan 1 2001

All Science Journal Classification (ASJC) codes

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

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