Abstract
An empirical relationship between the hardness and uniform elongation of non-austenitic hypoeutectoid steels has been developed. This new hardness-elongation relationship was combined with previously developed correlations of hardness and strength (yield and ultimate tensile strength) to predict the stress-strain flow curve from a single hardness test. The current study considers both power law hardening behavior and exponential hardening behavior. Reasonable agreement was observed between the experimental and predicted flow curves of a high strength, low alloy steel. Additionally, an empirical correlation of the flow strength at instability with hardness is provided.
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Pavlina, E.J., Van Tyne, C.J. Uniform Elongation and the Stress-Strain Flow Curve of Steels Calculated from Hardness Using Empirical Correlations. J. of Materi Eng and Perform 23, 2247–2254 (2014). https://doi.org/10.1007/s11665-014-1037-1
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DOI: https://doi.org/10.1007/s11665-014-1037-1