Fig. 2: Effect of impactor shape and mass on accessing lower strain rates in LIPIT. | Nature Communications

Fig. 2: Effect of impactor shape and mass on accessing lower strain rates in LIPIT.

From: Self-consistent hardness measurements spanning eleven decades of strain rate on a single material surface

Fig. 2

A Mass versus incident velocity (vi) of impactors impacting a material of hardness 3.5 GPa. Contours representing final indentation depth (hind) of 1 µm and 2 µm are illustrated for alumina impactors of conical, spherical and cylindrical shape. The faded gray region indicates the empirical power law that establishes an upper velocity limit based on impactor mass. B Indentation area (Aind) as a function of strain rate for impacts considered in (A). Source data are provided as a Source Data file.

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