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Article Dans Une Revue Scripta Materialia Année : 2012

In situ TEM study of dislocation slip in a metastable β titanium alloy

Résumé

Dislocation slip is investigated in a metastable β titanium alloy with the Ti-23Nb-0.7Ta-2Zr-0.4Si composition (at. %) by in situ straining experiments in a transmission electron microscope (TEM). Moving dislocations have a/2<111> Burgers vectors and glide in {110}, {112} or {123} planes. The mobility of screw dislocations is lowered by punctual defects and the existence of a stable and sessile core configuration that has to recombine in order to allow dislocations to glide.
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Dates et versions

hal-00864935 , version 1 (23-09-2013)

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Philippe Castany, M. Besse, Thierry Gloriant. In situ TEM study of dislocation slip in a metastable β titanium alloy. Scripta Materialia, 2012, 66 (6), pp.371-373. ⟨10.1016/j.scriptamat.2011.11.036⟩. ⟨hal-00864935⟩
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