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Title: Plastic Deformation of Textured Zircaloy 2
Authors: Sahoo, S K
Hiwarkar, V D
Pant, P
Samajdar, I
ManiKrishna, K V
Dey, G K
Srivastav, D
Tewari, R
Banerjee, S
Keywords: Zirconium
DD Simulation
Issue Date: 2011
Publisher: Trans Tech Publications, Switzerland
Citation: Materials Science Forum Vols. 702-703 (2012) pp 838-841
Abstract: The present study deals with deformation behaviour of textured Zircaloy 2 with two dominant orientations: basal and non-basal. During initial stages (<10%) of deformation twinning predominates slip in Zircaloy 2 of non-basal texture. Extensive electron backscattered diffraction (EBSD) analysis showed that twinning is strongly orientation sensitive. Positron annihilation spectroscopy (PAS) analysis also offered some insight towards effect of twinning/slip on positron lifetime. At higher deformations (>20%), two distinct class of grains were observed – non-deforming/non-fragmenting grains and deforming/fragmenting grains. The so-called non- deforming/non-fragmenting grains remain equiaxed even after 50% of deformation. They also have insignificant in-grain misorientation developments and have more residual stresses. Dislocation dynamics simulation showed that the dislocation interactions/mobility is insignificant in basal orientations at room temperature deformations.
Description: Copyright belongs to Trans Tech Publications, Switzerland
Appears in Collections:Journal Articles

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