Volume 2, Issue 3 (March 2005)

    Environmentally Influenced Fatigue in High Strength Steels

    (Received 30 October 2003; accepted 26 April 2004)

    Published Online: 2005

    CODEN: JAIOAD

      Format Pages Price  
    PDF 13 $25   ADD TO CART


    Abstract

    A study was conducted to identify the environmental influence on fatigue crack growth behavior of three high strength steels: AerMet 100, 300M, and 4340. These steels were subjected to fatigue tests under constant amplitude loading of frequency 10 Hz and stress ratios R = 0.1 and 0.9, in vacuum, air, and 3.5 % NaCl solution. The fatigue crack growth was characterized with two driving force parameters, stress intensity range, ΔK, and maximum stress intensity, Kmax. Especially, the variation of fatigue crack growth per time, da/dt, with Kmax in 3.5 % NaCl solution was evaluated with respect to R, environment, and threshold stress intensity for environmentally assisted cracking (EAC), KIEAC. In addition, the environmental influence on fatigue crack growth was examined with the fractographic features and trajectory path, drawn with the limiting values of ΔK and Kmax, ΔK* and Kmax*.


    Author Information:

    Lee, EU
    Materials Engineer, Naval Air Warfare Center Aircraft Division, Aerospace Materials Division, Patuxent River, MD

    Vasudevan, AK
    Scientific Officer, Office of Naval Research, Arlington, VA


    Stock #: JAI12044

    ISSN: 1546-962X

    DOI: 10.1520/JAI12044

    ASTM International is a member of CrossRef.

    Author
    Title Environmentally Influenced Fatigue in High Strength Steels
    Symposium Fatigue and Fracture Mechanics: 34th Volume, 2003-11-21
    Committee E08