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Validation of processing maps for 304L stainless steel using hot forging, rolling and extrusion

Venugopal, S and Venugopal, Sridhar and Sivaprasad, PV and Vasudevan, M and Mannan, SL and Jha, SK and Pandey, P and Prasad, YVRK (1996) Validation of processing maps for 304L stainless steel using hot forging, rolling and extrusion. In: Journal of Materials Processing Technology, 99 (04). pp. 343-350.

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Abstract

The development of a microstructure in 304L stainless steel during industrial hot-forming operations, including press forging (mean strain rate of 0.15 s(-1)), rolling/extrusion (2-5 s(-1)), and hammer forging (100 s(-1)) at different temperatures in the range 600-1200 degrees C, was studied with a view to validating the predictions of the processing map. The results have shown that excellent correlation exists between the regimes exhibited by the map and the product microstructures. 304L stainless steel exhibits instability bands when hammer forged at temperatures below 1100 degrees C, rolled/extruded below 1000 degrees C, or press forged below 800 degrees C. All of these conditions must be avoided in mechanical processing of the material. On the other hand, ideally, the material may be rolled, extruded, or press forged at 1200 degrees C to obtain a defect-free microstructure.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier science.
Keywords: Processing maps; Stainless steel; Hot workability.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 03 Dec 2009 10:48
Last Modified: 19 Sep 2010 05:27
URI: http://eprints.iisc.ernet.in/id/eprint/19305

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