A simple instability condition based on the Ziegler's continuum principles as applied to large plastic flow, is extended for delineating the regions of unstable metal flow during hot deformation of Nimonic AP-1 superalloy. The optimum hot working conditions for this material are suggested.

Bhagwati P. Kashyap

Department of Metallurgical & Materials Engineering

IIT Jodhpur

S.V.S. Narayana Murty

B. Nageswara Rao

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Journal	Powder Metallurgy
Publisher	IOM Communications Ltd.
ISSN	00325899