ENVIRONMENT ENHANCED FATIGUE CRACK GROWTH IN HIGH-STRENGTH STEELS

The current state of understanding of the phenomenology and mechanism(s) for corrosion fatigue of high-strength steels is reviewed. Particular attention is directed towards corrosion fatigue in hydrogen and in water/water vapor environments. Available experimental data indicate that fatigue crack growth in high-strength steels is influenced by loading variables, such as frequency, stress ratio and waveform in regions above and below KIscc. The influences of these variables are directly attributed to interactions with the external chemical environment. Possible synergistic interactions and their relation to chemical reaction kinetics are indicated. Pertinent information on oxygen-metal and water-metal reactions is summarized. Initial results from a coordinated program of study for determining the water-metal reaction kinetics and the kinetics of crack growth on a single high-strength steel are discussed. (Author Modified Abstract)

  • Availability:
  • Corporate Authors:

    Lehigh University

    Institute of Fracture and Solid Mechanics
    Bethlehem, PA  USA  18015
  • Authors:
    • Wei, R P
    • Simmons, G W
  • Publication Date: 1973-3

Media Info

  • Pagination: 61 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00047639
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • ISBN: TR-7
  • Report/Paper Numbers: IFSM-73-39 Tech Rpt
  • Contract Numbers: N00014-67A-0370-008
  • Files: TRIS
  • Created Date: Oct 18 1973 12:00AM