Fig. 1: Aggregated literature data on yield strength versus inverse square-root of grain size in NiCoCr (Hall–Petch scaling).
From: Yield strength and misfit volumes of NiCoCr and implications for short-range-order
All samples are single-phase fcc with grain size d ≥ 4 μm (excluding twin boundaries) and tested in tension at room temperature and strain rate 0.5–1 × 10−3 s−1. Samples indicated in color were water-quenched after the final heat treatment, with the color indicating the heat treatment temperature. Samples in gray were air-cooled after heat treatment. A best-fit linear regression to all of the data is shown, and differences in heat treatment and/or cooling method do not give rise to measurable differences in strength. The strength obtained by extrapolation to infinite grain size agrees well with the recent single-crystal experiments (data of Uzer et al.18).
