Extended Data Fig. 7: Stress relaxation and internal friction stress.
From: A highly distorted ultraelastic chemically complex Elinvar alloy
a, The typical stress relaxation curve obtained from a single-crystalline Co25Ni25(HfTiZr)50 micropillar with a top diameter of 1 μm. The activation volume is calculated to be ~3.05b3. b, The yield strength of single-crystal Co25Ni25(HfTiZr)50 micropillars at different temperatures. Standard fits to the data (inset equation) yield a Peierls stress of τc ≈ 0.47σc = 2.8 GPa and effective temperature of T0 = 1,107 K. The inset shows the contour plot of the critical stress τc as a function of the correlation length λ and standard deviation Δ for Co25Ni25(HfTiZr)50. Note that ζ0 stands for a dislocation core size.
