Thermoelastic properties and γ’-solvus temperatures of single-crystal Ni-base superalloys

Abstract The present work shows that thermal expansion experiments can be used to measure the γʼ-solvus temperatures of four Ni-base single-crystal superalloys (SX), one with Re and three Re-free variants. In case CMSX-4, experimental results are in good agreement numerical thermodynamic obtained using ThermoCalc. For alloys, calculated close. Transmission electron microscopy chemical compositions γ- γʼ-phases reasonably well predicted. We also use resonant ultrasound spectroscopy (RUS) show how elastic coefficients depend on composition temperature. discussed light previous reported literature. Areas need further highlighted. Graphical abstract