期刊论文详细信息
SCRIPTA MATERIALIA | 卷:149 |
Pure climb of [001] dislocations in TiAl at 850 °C | |
Article | |
Naanani, Soumaya1,2  Monchoux, Jean-Philippe1  Mabru, Catherine2  Couret, Alain1  | |
[1] Univ Toulouse, CNRS, CEMES, 29 Rue Jeanne Marvig, F-31055 Toulouse, France | |
[2] Univ Toulouse, CNRS, ICA, 3 Rue Caroline Aigle, F-31400 Toulouse, France | |
关键词: Titanium aluminides; High-temperature deformation; Transmission electron microscopy; Plasticity; Dislocation climb; | |
DOI : 10.1016/j.scriptamat.2018.02.002 | |
来源: Elsevier | |
【 摘 要 】
This paper presents a study by Transmission Electron Miscroscopy of the deformation microstructure in the gamma phase of a TiAl alloy crept at 850 degrees 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. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
【 授权许可】
Free
【 预 览 】
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10_1016_j_scriptamat_2018_02_002.pdf | 2020KB | download |