Fig. 4: Tensile properties of the CR750 alloy and comparison with other high-performance alloys.
From: Enhancing the strength and ductility of a medium entropy alloy through non-basal slip activation
a Engineering stress-strain curve tested at 298 K (black line), 77 K (red line), and 4.2 K (blue lines), respectively. b Corresponding strain-hardening rate (dotted lines) and true stress (solid lines) vs true strain curves. Due to the strong serrations observed in the 4.2 K tensile tests, we performed polynomial fitting on the engineering stress-strain curve to determine the strain-hardening rate. c, d Comparison of the CR750 against other state-of-the-art alloys in terms of their σy vs εu at 77 K (c) and 4.2–20 K (d), respectively. The data on the mechanical properties of these reported materials are also listed in Supplementary Table 4. This work has a superior combination of σy and εu compared with other alloys, including fcc H/MEAs25,26,27,28,29,30,31,32,33,34,35,36, body-centered cubic (bcc) H/MEAs37, TRIP H/MEAs38,39,40,41,42, fcc + B2 H/MEAs17,19,43,44, fcc + L12 H/MEAs15,45,46,47, steels29,48,49,50,51,52,53, H/MEAs26,27,29,30,32,34,35,36,54, and Ti alloys55,56,57,58,59,60,61. ‘H/MEAs’ and ‘TRIP’ denote high/medium entropy alloys and transformation-induced plasticity. Source data are provided as a Source data file.
