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Processing of Fe3Al based intermetallic alloys through electroslag remelting

DSpace at IIT Bombay

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Title Processing of Fe3Al based intermetallic alloys through electroslag remelting
 
Creator BALIGIDAD, RG
PRAKASH, U
RAO, VR
RAO, PK
BALLAL, NB
 
Subject aluminide alloys
iron-aluminide
air induction melting
electroslag remelting
iron aluminide
gas porosity
thermal cracks
process parameter
 
Description A process comprising air induction melting (AIM) and electroslag remelting (ESR) for production of iron aluminides based on Fe3Al is reported. Extensive hydrogen gas porosity is observed in air induction melted electrodes, Electroslag remelting of AIM electrode results in ingots free from gas porosity. Possible mechanisms for elimination of gas porosity during electroslag remelting are discussed. The cast ESR ingots exhibit a marked susceptibility to cracking at high power inputs due to high thermal gradients prevailing in the ingot. This may be attributed to the relatively low thermal conductivity and high coefficient of thermal expansion of Fe3Al. At very low power levels the ESR ingots exhibited poor surface quality. Proper selection of process parameters during electroslag remelting of air induction melted electrodes results in sound ingots free from thermal cracks and exhibiting good surface quality.
 
Publisher IRON STEEL INST JAPAN KEIDANREN KAIKAN
 
Date 2011-08-04T06:17:36Z
2011-12-26T12:54:35Z
2011-12-27T05:42:40Z
2011-08-04T06:17:36Z
2011-12-26T12:54:35Z
2011-12-27T05:42:40Z
1996
 
Type Article
 
Identifier ISIJ INTERNATIONAL, 36(12), 1448-1452
0915-1559
http://dx.doi.org/10.2355/isijinternational.36.1448
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9269
http://hdl.handle.net/10054/9269
 
Language en