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Processing map for hot working of Ni–16Cr–8Fe alloy (IN 600)

Srinivasan, N and Prasad, YVRK (1994) Processing map for hot working of Ni–16Cr–8Fe alloy (IN 600). In: Materials Science and Technology, 10 (5). 377-383 .

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The hot deformation characteristics of IN 600 nickel alloy are studied using hot compression testing in the temperature range 850-1200-degrees-C and strain rate range 0.001-100 s-1. A processing map for hot working is developed on the basis of the data obtained, using the principles of dynamic materials modelling. The map exhibits a single domain with a peak efficiency of power dissipation of 48% occurring at 1200-degrees-C and 0.2 s-1, at which the material undergoes dynamic recrystallisation (DRX). These are the optimum conditions for hot working of IN 600. At strain rates higher than 1 s-1, the material exhibits flow localisation and its microstructure consists of localised bands of fine recrystallised grains. The presence of iron in the Ni-Cr alloy narrows the DRX domain owing to a higher temperature required for carbide dissolution, which is essential for the occurrence of DRX. The efficiency of DRX in Ni-Cr is, however, enhanced by iron addition.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Institute of materials, minerals and mining.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Ms V Mangala
Date Deposited: 11 Apr 2011 04:29
Last Modified: 11 Apr 2011 04:29
URI: http://eprints.iisc.ac.in/id/eprint/36706

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