Study and Modelling of Some Variant Selections in bcc to hcp Phase Transformations
| Periodical | Materials Science Forum (Volumes 495 - 497) |
|---|---|
| Main Theme | Textures of Materials - ICOTOM 14 |
| Edited by | Paul Van Houtte and Leo Kestens |
| Pages | 1111-1120 |
| DOI | 10.4028/www.scientific.net/MSF.495-497.1111 |
| Citation | Michel Humbert et al., 2005, Materials Science Forum, 495-497, 1111 |
| Online since | September, 2005 |
| Authors | Michel Humbert, Nathalie Gey, Lionel Germain |
| Keywords | BCC to HCP Phase Transformation, Elasticity, Modeling, Texture, Variant Selection |
| Price | US$ 28,- |
One very often observes that the texture inheritance in BCC to HCP phase transformation shows variant selections, even though no external stress field is applied. These variant selections are related to the metallurgical state, the microstructure and the texture of the parent phase. From our own investigations, we came to the conclusion that the variant selections we observed in some phase transformations of various materials were influenced at different degrees by the elastic behaviour of the parent phase. Considering the transformation strain of each variant and the elastic anisotropy of the parent, we have build variant selection models based on energy minimum of elastic strain and assuming different types of interactions. The simulation results of texture transformation of a zircalloy sample show that the elastic characteristics of the parent phases are key parameters involved in the variant selection.
