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/10054/6482

Title: Delayed hydride cracking in Zr-2.5Nb pressure tube material
Authors: SINGH, RN
KUMAR, N
KISHORE, R
ROYCHAUDHURY, S
SINHA, TK
KASHYAP, BP
Keywords: wt pct nb
zirconium alloys
hydrogen
Issue Date: 2002
Publisher: ELSEVIER SCIENCE BV
Citation: JOURNAL OF NUCLEAR MATERIALS, 304(2-3), 189-203
Abstract: Delayed hydride cracking (DHC) is one of the localized forms of hydride embrittlement caused by hydrogen migration up the tensile stress gradient. In this work, DHC velocity was measured along the axial direction of the double melted, cold worked and stress-relieved zirconium-2.5niobium pressure tube material in the temperature range of 162-283 degreesC. The DHC crack growth was monitored using the direct current potential drop (DCPD) technique. The calibration curves between the normalized DCPD output and the normalized crack length at different test temperatures were also used to determine the DHC velocity. A simple model capable of explaining the observed features of DHC is proposed. The model explains the basis for the occurrence of incubation period associated with DHC crack initiation. Activation energy associated with the DHC in this alloy was found to be 56 kJ/mol. (C) 2002 .
URI: http://dx.doi.org/10.1016/S0022-3115(02)00880-2
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6482
http://hdl.handle.net/10054/6482
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