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Hot torsional study of electroslag refined RR 58

Jain, NK and Nair, Krishnadas CG and Abraham, KP and Prasad, YVRK (1984) Hot torsional study of electroslag refined RR 58. In: Transactions of the Indian Institute of Metals, 37 (5). pp. 493-497.

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Abstract

The optimum hot-working temperature for RR 58 [12793-49-6] Al alloy was 750 or 800 K for the electroslag refined or air-melted alloy, respectively. Hot ductility of the refined alloy did not increase, but the hot workability range shifted to lower temperatures of 750 K, to open up a possibility of achieving superior mechanical properties by thermomechanical treatment. The electroslag alloy was extruded at 750 K, and validity of optimum temperature predicted by hot torsion experiments was confirmed. The high-temperature deformation mechanism changed from self-diffusion in the air-melted alloy to dynamic recovery involving cross slip of screw dislocations in the refined alloy. An exponential rate equation was applicable.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The Indian Institute of Metals.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 12 May 2008
Last Modified: 23 Feb 2012 05:06
URI: http://eprints.iisc.ernet.in/id/eprint/13921

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