On strain-induced dissolution of θ′ and θ particles in Al-Cu binary alloy during equal channel angular pressing

▶ θ′ particles in Al-Cu binary alloy was found to dissolve more rapidly than θ particles. ▶ The different dissolution behavior of the θ′ and θ phase was thermodynamically analysed. ▶ The critical radius and free energy barrier for the strain-induced dissolution were calculated.