Abstract
Abstract Modulus of resilience ( R ) in metallic solids is calculated based on Helmholtz energy analysis, free electron gas and acoustic phonon approximations: R = C + 2200 −1 (T - T D ) + 2200 −2 (T –T c ) 2 , where T, T D , T c is respectively the test, Debye, and Curie temperature, C is a material-specific constant. The model reproduces well experimental data in commercial titanium-, copper-, and four steels solids, and evaluates HfB 2 where experimental data are missing. It further suggests that only ∼0.1% of all the thermal free electrons/acoustic phonons are mechanically activated during the tensile test, which provides important insights on strain-electron-phonon coupling in solids.
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