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Indentation creep studies of iron aluminide intermetallic alloy

DSpace at IIT Bombay

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Title Indentation creep studies of iron aluminide intermetallic alloy
 
Creator SHARMA, GARIMA
RAMANUJAN, R V
KUTTY, T R G
PRABHU, N
 
Subject activation energy
ceramic material
iron compounds
plasticity
stainless steel
 
Description Indentation creep behaviour of iron aluminide intermetallic (Fe–28Al–3Cr) was studied in the temperature range of 843–963 K. The hardness and the plasticity parameter were also calculated from room temperature to 1273 K. The variation of hardness with time showed that the stress exponent (n) was weakly dependent on temperature. Thermal activation parameter-activation area and energy were also calculated to identify the creep mechanism. The activation energy for high temperature creep was found to be in good agreement with that for self-diffusion of pure iron and in excellent agreement with previous studies. These values of n, activation area and activation energy were found to be consistent with dislocation climb as the rate controlling creep mechanism. Conventional creep curves were also derived from hardness values.
 
Publisher Elsevier
 
Date 2009-06-09T04:28:04Z
2011-12-08T07:52:40Z
2011-12-26T13:02:29Z
2011-12-27T05:48:48Z
2009-06-09T04:28:04Z
2011-12-08T07:52:40Z
2011-12-26T13:02:29Z
2011-12-27T05:48:48Z
2005
 
Type Article
 
Identifier Intermetallics 13(1), 47-53
0966-9795
10.1016/j.intermet.2004.05.008
http://hdl.handle.net/10054/1452
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1452
 
Language en