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EFFECT OF RAPID SOLIDIFICATION AND HEAT-TREATMENT ON D2 STEEL

DSpace at IIT Bombay

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Field Value
 
Title EFFECT OF RAPID SOLIDIFICATION AND HEAT-TREATMENT ON D2 STEEL
 
Creator BHARGAVA, AK
TIWARI, AN
 
Subject alloy ribbons
parameters
 
Description Chill block melt spinning has been employed to produce rapidly solidified (RS) ribbons of D2 steel (in wt% 1.7 C, 12.0 Cr, 0.69 V, balance Fe) and the effect of melt-spinning parameters on ribbon geometry has been studied. Microstructure and phases have been examined using SEM, XRD and magnetic measurements. In addition to a substantial refinement of grain size and of carbide precipitation, RS suppresses martensitic transformation and produces a supersaturated austenite phase. The effect of isochronal (1 h) heat treatment (623 to 1073 KA) has been evaluated using Vickers microhardness measurements. It shows that RS imparts to D2 steel the ability to age-harden. The peak ageing in 1 h occurs at 833 KA with an apparent activation energy of 225 kJ mol-1 estimated by differential thermal analysis. The aged ribbons are found to contain M7C3, M23C6 and Fe3C in a ferritic matrix.
 
Publisher A B ACADEMIC PUBL
 
Date 2011-07-12T11:31:41Z
2011-12-26T12:48:51Z
2011-12-27T05:34:00Z
2011-07-12T11:31:41Z
2011-12-26T12:48:51Z
2011-12-27T05:34:00Z
1992
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF RAPID SOLIDIFICATION, 7(1), 51-66
0265-0916
http://dspace.library.iitb.ac.in/xmlui/handle/10054/3310
http://hdl.handle.net/10054/3310
 
Language en