# Hot-working characteristics of nichrome and the development of a processing map

Srinivasan, N and Prasad, YVRK (1994) Hot-working characteristics of nichrome and the development of a processing map. In: Journal of Materials Processing Technology, 41 (4). pp. 409-424.

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## Abstract

A processing map for the hot working of nichrome has been developed on the basis of hot compression data in the temperature range 750-1200 °C and strain-rate range $0.0003-100\hspace{2mm} s^{-1}$. The map exhibits a domain of dynamic recrystallization with a peak efficiency of 38% occurring at 1200 °C and $0.1\hspace{2mm} s^{-1}$, which are the optimum parameters for the hot working of nichrome. At temperatures lower than 900°C and strain rates less than $0.001 \hspace{2mm}s^{-1}$, the material exhibits grain boundary cracking. Flow instabilities manifesting in the form of mechanical twinning at lower temperatures (< 1050 °C) and as inhomogeneous recrystallized bands at higher temperatures have been recorded in specimens deformed at strain rates greater than about $1 s^{-1}$.

Item Type: Journal Article Copyright of this article belongs to Elsevier. Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) 01 Aug 2006 19 Sep 2010 04:30 http://eprints.iisc.ernet.in/id/eprint/7940