Fig. 5: Tensile and compressive strength of the CuAuAg alloy.
From: Damascus-style hierarchical microstructures enable a strong and ductile medium-entropy alloy
a Strain-Stress curves of CuAuAg alloy. b Tensile mechanical performance of the CuAuAg MEA compared to related materials44,45,46,47,48,49,50,51,52,53,54. The error bars of large-scale specimens indicate the mean ± standard deviation, calculated from four samples of the same size. c In situ tensile testing images with different strain, (i) 0% strain, (ii) 10% strain, (i) 20% strain, (iv) 25% strain. d TEM analysis of the deformed structure in CuAuAg MEA, (i) TEM images and elemental mapping showing coordinated deformation of Cu-rich and Ag-rich phases, (ii) Interaction of dislocations with the L12 structure, (iii) The L12 phase exists mainly at the boundary between the Cu-rich and Ag-rich phases, and there is an obvious difference in dislocation density between the Cu-rich and Ag-rich phases, (iv) Dislocation enrichment is near the L12 superstructure.
