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Article dans une revue
A metallurgical approach to individually assess the rheology of alpha and beta phases of Ti-6Al-4V in the two-phase domain
Abstract : An original hot torsion procedure is presented using Ti-6Al-4V in the two-phase domain. Kinetics of phase transformation are used to obtain stress-strain curves in off-equilibrium states. The individual influences of phase fraction and of temperature are quantitatively assessed in the two-phase domain. Between the two forging temperatures 1143 K (870 C) and 1228 K (955 C), a 95 MPa stress difference is observed. The paper shows that this flow stress drop is mainly due to thermal activation, by 80 MPa, while 15 MPa is due to the change of phase fraction. The stresses in each phase are individually assessed and stress-strain curves for each phase are obtained within the two-phase domain
Littérature citée [13 références]
https://hal-mines-paristech.archives-ouvertes.fr/hal-00947591
Contributeur : Magalie Prudon <>
Soumis le : vendredi 8 juin 2018 - 09:31:37
Dernière modification le : jeudi 24 septembre 2020 - 17:22:58
Archivage à long terme le : : dimanche 9 septembre 2018 - 14:23:36
Contributeur : Magalie Prudon <>
Soumis le : vendredi 8 juin 2018 - 09:31:37
Dernière modification le : jeudi 24 septembre 2020 - 17:22:58
Archivage à long terme le : : dimanche 9 septembre 2018 - 14:23:36
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