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Recrystallization behavior of boron-doped Ni76Al24

DSpace at IIT Bombay

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Field Value
 
Title Recrystallization behavior of boron-doped Ni76Al24
 
Creator CHOWDHURY, SG
JENA, AK
RAY, RK
 
Subject ni3al
texture
deformation
diffusion
 
Description Considerable hardness recovery and almost complete restoration of order were observed during annealing of 85 pet cold-rolled boron-doped Ni76Al24 prior to recrystallization. Recrystallization kinetics were investigated over a wide range of temperatures at small intervals of transformed volume fraction. The variation of transformed volume fraction with time showed two unusual distinct regions characterized by separate Avrami exponents and activation energies. The exponent decreased from 2.2 at 800 degrees C to 0.7 at 950 degrees C for X > 0.6 and had a temperature-insensitive value of 3 for X > 0.6. The activation energy below 900 degrees C was 145 kJ/g atom for X < 0.6 and 110 kJ/g atom for X > 0.6, and that above 900 degrees C was about 435 kJ/g atom. Equations for the kinetics have been derived based on concurrent recovery in the untransformed regions during recrystallization. The predictions of the equations agree exceedingly well with the experimental results and yield separate values of the activation energies for interface migration and recovery.
 
Publisher MINERALS METALS MATERIALS SOC
 
Date 2011-08-18T20:02:58Z
2011-12-26T12:55:53Z
2011-12-27T05:43:12Z
2011-08-18T20:02:58Z
2011-12-26T12:55:53Z
2011-12-27T05:43:12Z
1998
 
Type Article
 
Identifier METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 29(12), 2893-2902
1073-5623
http://dx.doi.org/10.1007/s11661-998-0196-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10118
http://hdl.handle.net/10054/10118
 
Language en