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Communication Dans Un Congrès Année : 2002

Micromechanical study of abnormal fatigue cracking of Ti6246 at high Kmax

V. Doquet
C. Baudoux
  • Fonction : Auteur
J. Petit
  • Fonction : Auteur

Résumé

During cyclic tests performed with a constant Kmax and increasing Kmjn on a α/β titanium alloy, if Kmax is higher than 60-70% of Klc the crack growth rate does not drop, as normally expected, but reaches an asymptotic value. Solute hydrogen is shown to segregate at the crack tip when the cyclic plastic zone vanishes and to enhance room temperature creep, strain localisation and decohesion along α/β interfaces.

Dates et versions

hal-00116228 , version 1 (24-11-2006)

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F. Mignot, V. Doquet, C. Baudoux, J. Petit. Micromechanical study of abnormal fatigue cracking of Ti6246 at high Kmax. 8th International Fatigue Congress, 2002, Stockholm, Sweden. pp.1773-1780, ⟨10.1515/JMBM.2005.16.3.195⟩. ⟨hal-00116228⟩
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