Pure climb of [001] dislocations in TiAl at 850 °C

Abstract : This paper presents a study by Transmission Electron Miscroscopy of the deformation microstructure in the γ phase of a TiAl alloy crept at 850 °C under 150 MPa. A never observed population of dislocations is evidenced and characterized. It is shown that their Burgers vector is of [001] type and that they are moving by pure climb in the (001) planes. The reasons of the presence of these dislocations are discussed
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Soumaya Naanani, Jean-Philippe Monchoux, Catherine Mabru, Alain Couret. Pure climb of [001] dislocations in TiAl at 850 °C. Scripta Materialia, Elsevier, 2018, 149, pp.53-57. ⟨10.1016/j.scriptamat.2018.02.002⟩. ⟨hal-01829956⟩

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