Influence of cast versus wrought microstructure on the processing map for hot working of stainless steel type AISI 304

Venugopal, S and Mannan, SL and Prasad, YVRK (1993) Influence of cast versus wrought microstructure on the processing map for hot working of stainless steel type AISI 304. In: Materials Letters, 17 (6). pp. 388-392.

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Abstract

Processing maps for hot working of as-cast and wrought stainless steels of type AISI 304 have been developed in the temperature range 600 to 1250°C and strain rate range 0.001 to 100 s−1. The domain of dynamic recrystallization (DRX) in as-cast material occurs at higher temperatures (1250°C) and lower strain rates (0.001 s−1) than in the wrought steel (1100°C and 0.01 s−1). The effect is explained in terms of enhanced nucleation rate of DRX due to the carbide, ferrite particles, stable oxides/nitrides and second-phase intermetallics in the as-cast microstructure. The DRX domain is wider in the wrought material although the peak efficiency is less (32%) than in the as-cast case (40%). The flow instability regime is not significantly affected by the initial microstructure

Item Type:	Journal Article
Publication:	Materials Letters
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	10 Feb 2011 07:44
Last Modified:	10 Feb 2011 07:44
URI:	http://eprints.iisc.ac.in/id/eprint/35500

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