Paper Title:
Study and Modelling of Some Variant Selections in bcc to hcp Phase Transformations
  Abstract

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.

  Info
Periodical
Materials Science Forum (Volumes 495-497)
Edited by
Paul Van Houtte and Leo Kestens
Pages
1111-1120
DOI
10.4028/www.scientific.net/MSF.495-497.1111
Citation
M. Humbert, N. Gey, L. Germain, "Study and Modelling of Some Variant Selections in bcc to hcp Phase Transformations ", Materials Science Forum, Vols. 495-497, pp. 1111-1120, 2005
Online since
September 2005
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Price
$32.00
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