Abstract
We present a non-destructive method for determination the metal plasticity using dynamic microindentation with a spherical indenter. Based on the impact loading curve, expressions for its quantitative characterization are derived. Theoretical results are supported by multiple experiments with 10 metals and alloys. The values of the plasticity parameter calculated from the depths of the indenter penetration are close to the values obtained from the energy parameters of the indentation. We have analyzed the influence of the strain and the strain rate on the value of the plasticity parameter as well as the dependence of the dynamic plasticity on the change of the initial impact velocity. Obtained results are important for the express analysis of the plastic properties of metals in out-of-lab conditions.
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