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Article Dans Une Revue Journal de Physique IV Proceedings Année : 1996

Fatigue Crack Propagation Behaviour of a TiAl-based Alloy

Résumé

In the present study the fatigue crack propagation resistance of a nearly fully lamellar quaternary TiAl based is investigated at room-temperature. The fatigue crack growth rates material are shown to be highly sensitive on the applied stress intensity factor amplitude. A special attention is also paid to the influence of extrinsic factors. Thus crack-closure is proved to strongly influence the propagation. As regards environmental effects , ambient air induces fatigue crack growth rates two orders of magnitude higher than those measured in vacuum. The role of moisture in this deleterious effect is discussed.

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jpa-00254213 , version 1 (04-02-2008)

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Gilbert Hénaff, Catherine Mabru, J. Petit. Fatigue Crack Propagation Behaviour of a TiAl-based Alloy. Journal de Physique IV Proceedings, 1996, 06 (C2), pp.C2-247-C2-252. ⟨10.1051/jp4:1996235⟩. ⟨jpa-00254213⟩
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