Abstract Scope |
In this study, three high-entropy alloys of CrFeNi2Al0.3Ti0.1Cx (x values describe molar ratios; where x = 0, 0.05, 0.1, denoted as C0, C0.05, and C0.1, respectively) were synthesized to investigate the effect of C addition on microstructure and tensile properties. Alloys after thermomechanical treatment (hot rolled- cold rolled- annealed), C0 alloy exhibits a single face-centered cubic (FCC) phase; C0.05 alloy consists of FCC matrix and precipitate of TiC; C0.1 alloy consists of FCC matrix and precipitates of TiC and Cr23C6. The yield strength (YS) and ultimate tensile strength (UTS) of the alloys increase with the increases of C addition. Accordingly, YS increases from 459 MPa to 1101 MPa and UTS increases from 735 MPa to 1464 MPa. However, the elongation (EL) decreases from 51% to 31%. Precipitation hardening and solid-solution strengthening are suggested as the main strengthening mechanisms. |