High-temperature mechanical behavior of B2-ordered Ti–Mo–Al alloys

On the yield stress anomaly in a B2-ordered refractory AlNbTiVZr0.25 high-entropy alloy

“…Similar positive temperature dependence of the YS, called a yield stress anomaly (YSA), was previously found in binary and ternary B2 compounds [13][14][15][16]. However, there are scarce data on this phenomenon in the B2-ordered (R)HEAs.…”

“…Although many studies are devoted to the microstructure design of B2-RHEAs [10,11], plastic flow behaviour and deformation mechanisms of multicomponent B2 phases remain less explored [11][12][13]. Of different features, a yield stress anomaly (YSA) attracts great attention.…”

“…Of different features, a yield stress anomaly (YSA) attracts great attention. The YSA is a positive temperature dependence of strength, typical for some materials, including binary and ternary B2 compounds [13][14][15][16]. This work discussed the YSA manifestation in a B2-matrix AlNbTiVZr 0.25 RHEA [17,18] in a temperature interval of 600-800 • C. The reasons responsible for the YSA were carefully addressed.…”

Characteristic effects of alloying elements on β solidifying titanium aluminides: A review

“…Doping of Ti–Al binary system with Mo promote a rise in ionic or covalent bonds resulting in improved elasticity modulus and strength [ 98 ]. Based on the observations from literature [ 12 , 24 , 81 , 99 ], Nb addition in TiAl-based alloys still retains substantial quantities of Nb in other phases even with the initiation of the β 0 -phases that are quite stable at ambient temperatures.…”

“…As reported earlier, β-stabilizing γ-TiAl-based alloys are gaining awareness because they display outstanding workability with large-scale production opportunities [ 124 ]. However, β-phase hardness is dependent on the type of β-stabilizing element in the TiAl alloys.…”