STP765: Creep of Aluminum under Combined Longitudinal and Shear Stresses

    Gacougnolle, JL
    Laboratoire de Mécanique et de Physique des Matériaux, Poitiers Cedex,

    Peltier, JF
    Aerospatiale, Les Mureaux, France

    de Fouquet, J
    Laboratoire de Mécanique et de Physique des Matériaux, Poitiers Cedex,

    Pages: 13    Published: Jan 1982


    Abstract

    The creep behavior of aluminum in primary and secondary stages has been studied under combined stresses at about 473 K. A new creep machine was designed on which the specimen is free to rotate. Thus the rotation of the specimen in addition to its elongation could be observed during creep in tension. A small constant torque is added to the tensile load for limited periods. The response of the creep of aluminum to this new stress has been analyzed. The torsional anelastic strain observed is similar to the anelastic back flow in tensile creep. The evolution of the parameters of anelastic strain and the torsional plastic strain indicates the origin of a new process of deformation before the end of primary creep.

    Keywords:

    aluminum, mechanical properties, creep


    Paper ID: STP28881S

    Committee/Subcommittee: E28.11

    DOI: 10.1520/STP28881S


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