Ideal simple shear strengths of two HfNbTaTi-based quinary refractory multi-principal element alloys

Atomistic simulations are employed to investigate chemical short-range ordering in two body-centered cubic refractory multi-principal element alloys, HfMoNbTaTi and HfNbTaTiZr, its influence on their ideal simple shear strengths. Both the alias affine strengths analyzed {110} {112} planes opposing 111 directions. In both quinary local of NbNb, TaTa, HfNb, HfTa, NbTa is preferred as annealing temperature decreases from 900 300 K. The pair that achieves highest degree TiTi HfTi HfNbTaTiZr. Subject shear, these alloys yield by first phase transformation at most likely pairs followed deformation twinning those sites.