In situ measurement of the precipitate volume fraction and interfacial lattice misfit during non-isothermal creep in the superalloy CMSX-4

C. Schwalbe , Alain Jacques (1) , E. Galindo-Nava , C.N. Jones , C.M.F. Rae , J. Cormier (2, 3)

1 IJL - Institut Jean Lamour
2 PPrime [Poitiers] - Institut Pprime [UPR 3346]
3 ENDO - ENDOmmagement et durabilité [Institut Pprime]

The superalloy CMSX-4 was tested under non-isothermal creep conditions and in situ analysed using synchrotron X-ray diffraction. The influence of temperature jumps between 950 °C and 1160 °C on the -volume fraction and the lattice misfit were recorded. From this dataset, a phase fraction model was derived using a diffusion driven Johnson-Mehl-Avrami approach.

Mots clés: Creep; Synchrotron XRD; Phase-fraction model; Misfit

Domaines: Mécanique des fluides [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]; Physique Quantique [quant-ph]; Acoustique [physics.class-ph]; Biomécanique [physics.med-ph]; Matériaux; Polymères; 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]

C. Schwalbe, Alain Jacques, E. Galindo-Nava, C.N. Jones, C.M.F. Rae, et al.. In situ measurement of the precipitate volume fraction and interfacial lattice misfit during non-isothermal creep in the superalloy CMSX-4. Materials Science and Engineering: A, 2019, 740-741, pp.182-186. ⟨10.1016/j.msea.2018.10.033⟩. ⟨hal-02281663⟩