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Single, Temperature‐Dependent Stress‐Strain Law for the Dynamic Plastic Deformation of Annealed Face‐Centered Cubic Metals

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1 Author(s)
Bell, James F. ; The Johns Hopkins University, Baltimore, Maryland

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Large amplitude wave propagation in annealed aluminum is studied experimentally to within 70°C of the melting point of the metal. The strain‐rate‐independent, finite amplitude wave theory is found to apply at all temperatures. The governing stress‐strain law in each instance is parabolic. The coefficient of the parabolic stress‐strain law varies linearly with the absolute temperature. The annealed, face‐centered cubic metals of aluminum, copper, lead, gold, and silver are all found to have the same parabolic stress‐strain law at absolute zero. Thus, from experiments using the author's diffraction grating technique, a single stress‐strain law is found which is applicable at any temperature to any of these annealed metals whose melting point is specified.

Published in:

Journal of Applied Physics  (Volume:34 ,  Issue: 1 )