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Ultra-fine Grain Materials by Severe Plastic Deformation: Application to Steels

Suwas, Satyam and Bhowmik, Ayan and Biswas, Somjeet (2009) Ultra-fine Grain Materials by Severe Plastic Deformation: Application to Steels. In: International Conference on Microstructure and texture in Steels and Other Materials, FEB 05-07, 2008, INDIA, pp. 325-344.

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Official URL: http://www.springerlink.com/content/n0154k26t64hgt...

Abstract

Severe plastic deformation techniques are known to produce grain sizes up to submicron level. This leads to conventional Hall-Petch strengthening of the as-processed materials. In addition, the microstructures of severe plastic deformation processed materials are characterized by relatively lower dislocation density compared to the conventionally processed materials subjected to the same amount of strain. These two aspects taken together lead to many important attributes. Some examples are ultra-high yield and fracture strengths, superplastic formability at lower temperatures and higher strain rates, superior wear resistance, improved high cycle fatigue life. Since these processes are associated with large amount of strain, depending on the strain path, characteristic crystallographic textures develop. In the present paper, a detailed account of underlying mechanisms during SPD has been discussed and processing-microstructure-texture-property relationship has been presented with reference to a few varieties of steels that have been investigated till date.

Item Type: Conference Paper
Additional Information: International Conference on Microstructure and texture in Steels and Other Materials, Jamshedpur, INDIA, FEB 05-07, 2008
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 04 Nov 2010 11:17
Last Modified: 04 Nov 2010 11:17
URI: http://eprints.iisc.ac.in/id/eprint/33574

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