New Model for Twin-Variant Selection in Hexagonal Alloys
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 variant selection. The calculations are compared with the experimental results obtained on T40 (ASTM grade 2) deformed by Channel Die compression.
Asim Tewari, Satyam Suwas, Dinesh Srivastava, Indradev Samajdar and Arunansu Haldar
C. Schuman et al., "New Model for Twin-Variant Selection in Hexagonal Alloys", Materials Science Forum, Vols. 702-703, pp. 229-232, 2012