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A New Variant Selection Criterion for Twin Variants in Titanium Alloys (Part 2) |
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| Authors: | Christophe Schuman Lei Bao Jean Sébastien Lecomte Yudong Zhang Jean Marc Raulot Marie Jeanne Philippe Claude Esling |
| Affiliation: | 1. Laboratoire d'étude des Microstructures et de Mécanique des Matériaux, LEM3, CNRS 7239, Université Paul Verlaine – Metz, Ile du Saulcy, 57045 Metz, France;2. LEM3, CNRS 7239, Université Paul Verlaine – Metz, Ile du Saulcy, 57045 Metz, France |
| Abstract: | A new selection criterion to explain the activation of the twinning variant is proposed. This criterion is based on the calculation of the deformation energy to create a primary twin. The calculation takes into account the effect of the grain size using a Hall–Petch type relation. This criterion allows to obtain a very good prediction for the twin family selection and twin variant selection. The calculations are compared with the experimental results obtained on T40 (ASTM grade 2) deformed by Channel Die compression. |
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