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Load redistribution in eutectic high entropy alloy AlCoCrFeNi$$_{2.1}$$ during high temperature deformation

共晶系高エントロピー合金AlCoCrFeNi$$_{2.1}$$における高温変形時の荷重再分配特性

Jaladurgam, N. R.*; Lozinko, A.*; Guo, S.*; Harjo, S.   ; Colliander, M. H.*

Jaladurgam, N. R.*; Lozinko, A.*; Guo, S.*; Harjo, S.; Colliander, M. H.*

The load redistribution between and within phases in eutectic high entropy alloy AlCoCrFeNi$$_{2.1}$$ was measured using in-situ neutron diffraction during tensile deformation at 973 K. The load partitioning between phases is reversed compared to lower temperatures, with L1$$_{2}$$ becoming the stronger phase. The evolution of the orientation-specific stresses and strains in the L1$$_{2}$$ phase suggests that cube slip dominates the response. The low strength, internal load transfer and ideally plastic response of the B2 phase indicate a change in deformation mechanism compared to lower temperatures.

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