Plastic deformation of single crystals of the equiatomic Cr−Mn−Fe−Co−Ni high-entropy alloy in tension and compression from 10 K to 1273 K

Temperature Dependence of Mechanical Properties and Plastic Flow Behavior of Cast Multicomponent Alloys Fe20Cr20Mn20Ni20Co20-xCx (x = 0, 1, 3, 5)

“…Figure 5a plots the temperature dependence of the offset yield stress for the alloys under discussion. The dependence σ 0.2 (T) for the Cantor alloy was described in the previous works [4,6,7,30]. The data of the present study agree with them: an increase in stresses σ 0.2 with decreasing deformation temperature is higher than that in pure metals and substitutional single-component alloys.…”

Uniaxial mechanical properties of face-centered cubic single- and multiphase high-entropy alloys

“…15,17 The higher tensile ductility at lower temperatures for polycrystals is ascribed to a dynamic Hall-Petch effect due to the occurrence of deformation twinning at low temperatures. 15,17 This is consistent with what is observed for the single crystals 27 and with the general belief that deformation twinning occurs more readily at lower temperatures in fcc metals and alloys. 29,30 However, the twining behavior is quite different for single crystals and polycrystals of the equiatomic CrMnFeCoNi HEA.…”

Plastic deformation of solid-solution strengthened Hf-Nb-Ta-Ti-Zr body-centered cubic medium/high-entropy alloys

“…On the other hand, Basinski et al [12] performed a systematic study on the face-centered cubic (FCC) Cu-based alloys and found a lower stress exponent, n ≤1, as in a weak dislocationsolute interaction model of Labusch [ 14 , 15 ]. Recently, Kawamura et al [16] found the V * values of the CoCrFeMnNi FCC-HEA linearly scaled with the Cu and Ag-based FCC dilute alloys. Our present observations on the concentrated BCC alloys indicated the stress exponent of n ~1.05, which was surprisingly close to that of the FCC alloys.…”