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Investigation on the martensitic transformation and the associated intermediate phase in U-2 wt%Zr alloy

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Title Investigation on the martensitic transformation and the associated intermediate phase in U-2 wt%Zr alloy
 
Creator BASAK, C
KESWANI, R
PRASAD, GJ
KAMATH, HS
PRABHU, N
BANERJEE, S
 
Subject metastable phases
uranium alloys
gamma-phase
 
Description In most of the binary uranium alloy systems, different metastable phases can be retained at room temperature depending on the rate of cooling of the gamma phase. On the other hand, in U-rich U-Zr system, the gamma phase transforms into either martensitic alpha or Widmanstatten alpha depending on the cooling rate. It has not been ascertained so far if any intermediate phase is involved prior to the martensitic transformation in U-rich U-Zr system and, therefore, nature of the intermediate phase remains undetermined. Present investigation shows the existence of an intermediate phase prior to the final martensitic transformation. Although the equilibrium beta phase is known to undergo martensitic transformation, quenching from the gamma phase appears to suppress the beta phase formation. In fact the present experimental evidence suggests that the most likely intermediate phase is the monoclinic distortion of alpha phase (alpha ''), and not the beta, when gamma phase of U-2 wt%Zr alloy is quenched rapidly. (C) 2009
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-25T09:34:51Z
2011-12-26T12:50:32Z
2011-12-27T05:35:49Z
2011-07-25T09:34:51Z
2011-12-26T12:50:32Z
2011-12-27T05:35:49Z
2009
 
Type Article
 
Identifier JOURNAL OF NUCLEAR MATERIALS, 393(1), 146-152
0022-3115
http://dx.doi.org/10.1016/j.jnucmat.2009.05.018
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6700
http://hdl.handle.net/10054/6700
 
Language en