You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Improved Fatigue Resistance of 7050 Thick Plate Aluminum Through Minimization of Microporosity

    Published: Jan 1998

      Format Pages Price  
    PDF (1.4M) 38 $25   ADD TO CART
    Complete Source PDF (5.5M) 38 $55   ADD TO CART


    This paper illustrates the substantial fatigue life improvements that have been achieved with 7050 heavy gauge plate over the past two decades. The load control fatigue resistance of 7050-T7451 thick plate is shown to decrease with increasing plate thickness at both the plate quarter-thickness (T/4) and mid-thickness (T/2). These reductions in fatigue resistance are shown to be most substantial at the plate mid-thickness, and they are shown to be directly related to the maximum size of remaining micropores.


    7050-T7451, aluminum plate, MIL-HDBK-5, load control fatigue properties, microporosity, equivalent stress, thickness effects, process optimization, lognormal distribution

    Author Information:

    Deschapelles, JB
    Rolled Products Technical Manager, Century Aluminum Corporation, Ravenswood, West Virginia

    Rice, RC
    Manager, Structural Integrity Projects Office, Advanced Manufacturing Technology, Battelle, Columbus, Ohio

    Committee/Subcommittee: E08.04

    DOI: 10.1520/STP12342S

    CrossRef ASTM International is a member of CrossRef.