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Article Dans Une Revue International Journal of Mechanical Sciences Année : 2018

Characterization and modeling of forged Ti-6Al-4V Titanium alloy with microstructural considerations during quenching process

Renaud Julien
Vincent Velay
Vanessa Vidal
Yoann Dahan
  • Fonction : Auteur
Romain Forestier
  • Fonction : Auteur
Farhad Rezai-Aria

Résumé

The present investigation proposes an experimental device able to assess the thermo-mechanical behavior of Ti-6Al-4V Titanium alloy throughout the die-forging operation. Constitutive equations are developed to assess the influence of the process (die-forging temperature, cooling rate) and the microstructure parameters on the mechanical response of the alloy. For this purpose, a non-unified behavior model formulation is implemented, which defines two main mechanisms related to α and β phases and allows the prediction of hardening, strain rate sensitivity and temperature, combined with the phase evolution that is dependent on the cooling conditions and which can greatly affect the mechanical behavior. This identification strategy is then applied for die-forging temperatures below the β-transus temperature, which requires microstructural information provided by SEM (Scanning Electron Microscopy) observations and image analysis. Finally, the approach is extended to die-forging temperatures above the β-transus temperature.

Domaines

Matériaux
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Dates et versions

hal-01799489 , version 1 (28-05-2018)

Identifiants

Citer

Renaud Julien, Vincent Velay, Vanessa Vidal, Yoann Dahan, Romain Forestier, et al.. Characterization and modeling of forged Ti-6Al-4V Titanium alloy with microstructural considerations during quenching process. International Journal of Mechanical Sciences, 2018, 142-143, pp.456-467. ⟨10.1016/j.ijmecsci.2018.05.023⟩. ⟨hal-01799489⟩
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