Deformation twinning in zircaloy 2

Sahoo, S. K. ; Hiwarkar, V. D. ; Samajdar, I. ; Pant, P. ; Dey, G. K. ; Srivastav, D. ; Tewari, R. ; Banerjee, S. (2010) Deformation twinning in zircaloy 2 Materials Science and Technology, 26 (1). pp. 104-114. ISSN 0267-0836

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Fully recrystallised zircaloy 2 samples were subjected to different degrees of uniaxial compression. Grains of high Taylor factors showed {1012} 1011 deformation twins, noticeable up to 13-16% compression. Twinning strongly affected the crystallographic texture and also brought in clear differences in stored energy and residual stress between the suspected parent and product grains/orientations of twinning. At later stages of deformation, where presence of twinning was insignificant, aforementioned heterogeneity was further supplemented by heterogeneity in microstructure - clear presence of fragmenting and non-fragmenting grains. Direct observations on twin fraction, twin deviation and twin continuity had shown an apparent peak in twinning by ~7·5% compression, an observation explainable through a simple model of twin decay by in grain misorientation development.

Item Type:Article
Source:Copyright of this article belongs to Institute of Materials, Minerals and Mining.
Keywords:Deformation Twins; Texture; Residual Stress; Misorientation; Zirconium; EBSD
ID Code:82272
Deposited On:10 Feb 2012 04:54
Last Modified:10 Feb 2012 04:54

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