Dislocation-mediated plasticity in the Al$_{2}$Cu {\theta}-phase
| Autor: | Sandra Korte-Kerzel, Stefanie Sandlöbes-Haut, William Clegg, N. Lohrey, Doreen Andre, Zhuocheng Xie, J.T. Pürstl, F. Ott |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Condensed Matter - Materials Science Materials science Polymers and Plastics Condensed matter physics Deformation (mechanics) Metals and Alloys Intermetallic Order (ring theory) 02 engineering and technology Slip (materials science) Plasticity 021001 nanoscience & nanotechnology 01 natural sciences Electronic Optical and Magnetic Materials ddc:670 Phase (matter) 0103 physical sciences Ceramics and Composites Dislocation 0210 nano-technology Burgers vector |
| Zdroj: | Acta Materialia Acta materialia 209, 116748 (2021). doi:10.1016/j.actamat.2021.116748 |
| Popis: | The deformation behaviour of the intermetallic Al$_{2}$Cu-phase was investigated using atomistic simulations and micropillar compression, where slip on the unexpected {211} and {022} slip planes was revealed. Additionally, all possible slip systems for the intermetallic phases were further evaluated and a preference for the activation of slip systems based on their effective interplanar distances as well as the effective Burgers vector is proposed. The effective interplanar distance corresponds to the manually determined interplanar distance, whereas the effective Burgers vector takes a potential dislocation dissociation into account. This new order is: {211}1/2, {022}1/2 and {022}, {110}, {310}, {022}, {110}1/2, {112} and {112}1/2 from high to low ratio of deff/beff. Also, data on the critical resolved shear stresses of several of these slip systems were measured. Comment: 27 pages, 17 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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