On the Origin of the Enhanced Creep Resistance in Underaged Al-Cu Based Alloys
It has recently been observed that the creep resistance of Al-Cu based precipitation hardened alloys may be enhanced through use of the underaged temper. We have treated this problem theoretically by considering the motion of a dislocation through a precipitation hardened structure and discuss the physical origin of the enhanced creep resistance in the underaged condition. The variation in expected creep resistance as a function of aging treatment is calculated and the possible generality of the experimental observations is considered.
W.J. Poole, M.A. Wells and D.J. Lloyd
C. R. Hutchinson et al., "On the Origin of the Enhanced Creep Resistance in Underaged Al-Cu Based Alloys", Materials Science Forum, Vols. 519-521, pp. 1029-1034, 2006