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Stress-reorientation of hydrides and hydride embrittlement of Zr–2.5 wt% Nb pressure tube alloy

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Title Stress-reorientation of hydrides and hydride embrittlement of Zr–2.5 wt% Nb pressure tube alloy
 
Creator SINGH, RN
KISHORE, R
SINGH, SS
SINHA, TK
KASHYAP, BP
 
Subject polynomials
yield stress
tensile properties
annealing
 
Description Hydrogen in excess of the terminal solid solubility precipitates out as a brittle hydride phase in zirconium alloys. The hydrides acquire platelet shaped morphology due to their accommodation in the matrix and can cause severe embrittlement, especially when these are oriented normal to the tensile stress axis. The precipitation of hydride platelets normal to the tensile stress when cooled under stress from a solution-annealing temperature is commonly referred to as ‘stress-reorientation’. The stress-reorientation is associated with a threshold stress below which no reorientation is observed. In this work, stress-reorientation of hydrides was investigated for unirradiated, cold worked and stress-relieved Zr–2.5 wt% Nb pressure tube material for a reorientation temperature of 423–723 K. The effect of the reoriented hydrides on the tensile properties of the Zr–2.5 wt% Nb pressure tube alloy was evaluated in the temperature range of 298–573 K.
 
Publisher Elsevier
 
Date 2009-06-06T05:35:34Z
2011-12-08T07:50:10Z
2011-12-26T13:02:27Z
2011-12-27T05:48:44Z
2009-06-06T05:35:34Z
2011-12-08T07:50:10Z
2011-12-26T13:02:27Z
2011-12-27T05:48:44Z
2004
 
Type Article
 
Identifier Journal of Nuclear Materials 325(1), 26-33
0022-3115
10.1016/j.jnucmat.2003.10.009
http://hdl.handle.net/10054/1446
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1446
 
Language en