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New Interpretation of the n‐Power Law in Plastic Deformation

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1 Author(s)
Fusfeld, Herbert I. ; Pitman‐Dunn Laboratory, Frankford Arsenal, Philadelphia, Pennsylvania

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It is shown that the n-power law describing a true stress-strain curve, normally written as S = kδn, can be placed in the form S=S0(eδ/n)n where S0 is the engineering tensile strength. The application of this new expression to tensile curves is discussed. A plot of S/S0 as a function of n, for a fixed value of the logarithmic strain δ, provides a general description of the behavior of all materials in plastic deformation. Experimental data from the literature are in good agreement with the curves.

Published in:

Journal of Applied Physics  (Volume:20 ,  Issue: 11 )