DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/7062

Title: Textural and microstructural developments during fabrication of Zr-2.5Nb pressure tubes
Authors: KUMAR, MK
VANITHA, C
SAMAJDAR, I
DEY, GK
TEWARI, R
SRIVASTAVA, D
BANERJEE, S
Keywords: irradiation creep
zirconium alloys
zircaloy-4
anisotropy
growth
nb
evolution
behavior
Issue Date: 2004
Publisher: ELSEVIER SCIENCE BV
Citation: JOURNAL OF NUCLEAR MATERIALS, 335(1), 48-58
Abstract: Zr-2.5wt%Nb pressure tubes, as used in the Indian pressurized heavy water reactors (PHWR), are fabricated through a combination of hot extrusion followed by two stages of cold pilgering and annealing. The present study makes an effort to systematically characterize the textural changes during the fabrication stages. The starting single-phase hcp martensitic structure was textured to start with and it also went through strong texture developments during hot extrusion. First and especially the second pilgering modified the texture. Such modifications were related to local discontinuity of the softer second phase, as an apparent continuity restricted lattice rotation in the primary hcp phase. Annealing caused discontinuity or spherodization of the bcc phase, but did not create recrystallization in the hcp matrix. The combination of two pilgering plus annealing operations, though the latter did not cause noticeable texture changes, however, reverted the final texture close to the parent hot-extruded texture. (C) 2004
URI: http://dx.doi.org/10.1016/j.jnucmat.2004.07.003
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7062
http://hdl.handle.net/10054/7062
ISSN: 0022-3115
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback