Development and thermal stability of Cr10Mo25Ta25Ti15V25 refractory high entropy alloys

Controlling microstructure and mechanical properties of Ti-V-Cr-Nb-Ta refractory high entropy alloys through heat treatments

“…al. [3] compared the compressive yield strength of various RHEA systems and conventional Ni-based superalloys. All the RHEAs reviewed in [3] show very high yield strength (> 900 MPa) at RT and most retain their high strength at temperatures up to 1000 °C.…”

“…[3] compared the compressive yield strength of various RHEA systems and conventional Ni-based superalloys. All the RHEAs reviewed in [3] show very high yield strength (> 900 MPa) at RT and most retain their high strength at temperatures up to 1000 °C. For example, the Cr 10 Mo 25 Ta 25 Ti 15 V 25 alloy has yield strength 1542 MPa at room temperature and 594 MPa at 1000 °C [3].…”

“…All the RHEAs reviewed in [3] show very high yield strength (> 900 MPa) at RT and most retain their high strength at temperatures up to 1000 °C. For example, the Cr 10 Mo 25 Ta 25 Ti 15 V 25 alloy has yield strength 1542 MPa at room temperature and 594 MPa at 1000 °C [3]. In contrast, conventional high-temperature Ni-based superalloy Haynes 230 significantly softens above 700 °C, with its compressive yield strength dropping to ∼100 MPa at 1000 °C [3].…”

“…For example, the Cr 10 Mo 25 Ta 25 Ti 15 V 25 alloy has yield strength 1542 MPa at room temperature and 594 MPa at 1000 °C [3]. In contrast, conventional high-temperature Ni-based superalloy Haynes 230 significantly softens above 700 °C, with its compressive yield strength dropping to ∼100 MPa at 1000 °C [3]. The strengthening in conventional Ni-based superalloys is mainly controlled by secondary phase precipitation.…”

Experimental Investigation of Phase Equilibria in the Ti-Cr-V System at 1000–1200 °C

“…Ti-Cr-V alloys have been investigated for a variety of applications, including aerospace structural and functional materials, hydrogen storage materials, fusion reactor construction materials, and high-temperature alloys. The recently promising high-entropy alloys (HEAs) and refractory high-entropy alloys (RHEAs) also include Ti-Cr-V-based alloys [1][2][3][4][5][6].…”