Load redistribution in eutectic high entropy alloy AlCoCrFeNi <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"> <mml:msub> <mml:mrow/> <mml:mrow> <mml:mn>2.1</mml:mn> </mml:mrow> </mml:msub> </mml:math> during high temperature deformation
Nitesh Raj Jaladurgam, Adrianna Łozinko, Sheng Guo, Stefanus Harjo, Magnus Hörnqvist Colliander
Abstract
The load redistribution between and within phases in eutectic high entropy alloy AlCoCrFeNi2.1 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 L12 becoming the stronger phase. The evolution of the orientation-specific stresses and strains in the L12 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.
Topics & Concepts
Materials scienceEutectic systemAlloyRedistribution (election)Ultimate tensile strengthThermodynamicsNeutron diffractionDiffractionComposite materialPhysicsOpticsPoliticsPolitical scienceLawHigh Entropy Alloys StudiesHigh-Temperature Coating BehaviorsAdditive Manufacturing Materials and Processes