Abstract
Aluminum single crystals, alloyed with 0.042 atomic pet Cu and 0.11 and 1.1 atomic pet Mg, were subjected to constant stress creep tests, tensile tests, and hot hardness measurements within a temperature range of 300° to 866°K. Calculations based on Dorn’s temperature-compensated time parameter, θ, gave a value of ΔHc = 27,000 cal per mol for the activation energy of early creep in aluminum single crystals. Correlations have been obtained for aluminum alloy single crystals with the parameter F for solid solution strengthening, as well as with the parameter F for solid solution hardening, by using a valence of three for aluminum. Limited measurements on tensile specimens show that the slip band density tends to decrease with increasing temperature and with decreasing solute concentration.
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TP 4136E. Manuscript, Mar. 15, 1955. Philadelphia Meeting, October 1955.
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Underwood, E.E., Marsh, L.L. Effects of Alloying Elements on Plastic Deformation in Aluminum Single Crystals. JOM 8, 477–483 (1956). https://doi.org/10.1007/BF03377707
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DOI: https://doi.org/10.1007/BF03377707