New Interpretation of the n‐Power Law in Plastic Deformation

摘要

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 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.