Temperature dependence of elastic moduli in a refractory HfNbTaTiZr high-entropy alloy

G. Laplanche , P. Gadaud (1) , L. Perrière (2) , I. Guillot (2) , J.P. Couzinie (2)

1 ENDO - ENDOmmagement et durabilité [Institut Pprime]
2 ICMPE - Institut de Chimie et des Matériaux Paris-Est

The equiatomic HfNbTaTiZr solid solution is currently regarded as a model disordered body-centered cubic high-entropy alloy. Therefore, the temperature dependence of its elastic moduli is of prime importance to improve our understanding of the mechanical properties of this refractory alloy. In this study, the alloy was found to be single phase, fully recrystallized with a slight texture along the normal direction after thermomechanical processing at room temperature. Elastic moduli were determined over the temperature range [293 K-1100 K].

Mots clés: High entropy alloys; TiZrNbHfTa; Microstructure; Texture; Elastic constants

Domaines: Mécanique des fluides [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]; Acoustique [physics.class-ph]; Automatique / Robotique; Electromagnétisme; Milieux fluides et réactifs; Energie électrique; Thermique [physics.class-ph]; Vibrations [physics.class-ph]; Physique mathématique [math-ph]; Physique Quantique [quant-ph]; Acoustique [physics.class-ph]; Biomécanique [physics.med-ph]; Matériaux; Polymères

G. Laplanche, P. Gadaud, L. Perrière, I. Guillot, J.P. Couzinie. Temperature dependence of elastic moduli in a refractory HfNbTaTiZr high-entropy alloy. Journal of Alloys and Compounds, 2019, 799, pp.538-545. ⟨10.1016/j.jallcom.2019.05.322⟩. ⟨hal-02369812⟩