Fig. 1: Assessing the mechanical properties of Pt-BMG with conventional nanoindentation.
From: Atomic-scale homogeneous plastic flow beyond near-theoretical yield stress in a metallic glass
a Typical force vs penetration depth curve measured on Pt-BMG with a commercial nanoindenter using a 320 nm radius spherical diamond tip. The loading rate was set as 50 μNs−1. The Hertz fitting curve (dashed blue curve) is obtained with Eq. (1) from the Materials and Methods section. b Cumulative distribution function visualizing the scatter of the yield shear stress τy obtained from analyzing 30 distinct nanoindentations on Pt-BMG using the same experimental protocol as in a; note that the pop-in loads measured were determined only up to one decimal place, which is why the shear stress at first pop-in is the same value for multiple indentation experiments. Nevertheless, all values found are within a band limited by G/11 and G/8.
