STP648

    Fatigue Crack Propagation in A537M Steel

    Published: Jan 1978


      Format Pages Price  
    PDF Version (236K) 12 $25   ADD TO CART
    Complete Source PDF (5.1M) 12 $55   ADD TO CART


    Abstract

    Fatigue crack propagation rates are presented for weldments in A537M steel at room temperature. Rates are determined for cracks propagating along the fusion line, in the melt zone of welds made with two shielding gas ratios, and in the base metal. Static tension and Charpy impact tests conducted on specimens from the base material and melt zone also are presented. Results indicate that crack growth resistance of A537M steel is not degraded by proper welding procedures, and the weld zone may impede growth rates. Shielding gas ratios, which affect tensile properties, are shown not to affect fatigue crack growth rates significantly. An interim da/dN versus ΔK design curve is computed for the data sets, and its application to flawed plate life prediction is discussed.

    Keywords:

    fatigue tests, steels, crack propagation, weldments, melting points, fusion line, weld defects, Charpy impact properties, tensile data, life prediction


    Author Information:

    Sandifer, JP
    Senior scientist and senior research scientist, Fatigue and Fracture Mechanics Laboratory, Lockheed-California Company, Burbank, Calif

    Bowie, GE
    Senior scientist and senior research scientist, Fatigue and Fracture Mechanics Laboratory, Lockheed-California Company, Burbank, Calif


    Paper ID: STP33395S

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP33395S


    CrossRef ASTM International is a member of CrossRef.