Abstract
Dislocation velocities at high temperatures in metallic systems are believed in literature to be different for glide and climb, the values being bigger in case of glide. However, this has not been experimentally established. Therefore, in this study, dislocation velocities were measured with simultaneous determination of the corresponding mechanism (glide or mixed climb). For this purpose, coupled experiments of measurements of dislocation velocities by in-situ TEM investigations and of determination of movement planes by stereographic analyses have been carried out at 770–790 °C in the γ phase of an intermetallic Ti-48.4Al-0.1B (at.%) alloy. Mixed climb and pure glide mechanisms have thus been identified, both leading to dislocation velocities in the same order of magnitude (in the 0.5–5 nm/s range), showing that within a transition temperature domain, mixed climb can reach the velocity of glide.
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 115333 |
| Seitenumfang | 8 |
| Fachzeitschrift | Scripta materialia |
| Jahrgang | 228.2023 |
| Ausgabenummer | 15 April |
| Frühes Online-Datum | 31 Jan. 2023 |
| DOIs | |
| Publikationsstatus | Veröffentlicht - 15 Apr. 2023 |
Bibliographische Notiz
Funding Information:This work was supported by the cooperative Austrian-French project HITIAL-18-CE9101 project co-supported by the French Agence Nationale de la Recherche (ANR) and the Austrian Fonds zur Förderung der wissenschaftlichen Forschung (FWF), and partially financed by the grant NanoX n ANR-17-EURE-0009 in the framework of the “Programme des Investissements d'Avenir”. Michael Musi is a is a Recipient of a DOC Fellowship of the Austrian Academy of Sciences at the Department of Materials Science, Montanuniversität Leoben.
Funding Information:
This work was supported by the cooperative Austrian-French project HITIAL-18-CE91 01 project co-supported by the French Agence Nationale de la Recherche (ANR) and the Austrian Fonds zur Förderung der wissenschaftlichen Forschung (FWF) , and partially financed by the grant NanoX n ANR-17-EURE-0009 in the framework of the “Programme des Investissements d'Avenir”. Michael Musi is a is a Recipient of a DOC Fellowship of the Austrian Academy of Sciences at the Department of Materials Science, Montanuniversität Leoben.
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