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Groupe Matériaux Cristallins
sous Contrainte "MC2"
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| Jerky motion of screw dislocations, in prismatic planes of beryllium at room temperature |
| Author : A. Couret Description: Vertical bright lines are screw dislocations observed in dark field and weak-beam conditions. They move to the right under the stress applied to the sample. Their rectilinear aspect and their jerky glide motion are typical of a "locking-unlocking" mechanism. References: Prismatic glide in beryllium. II - The origin of the strength anomaly. |
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