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Grain Growth in ECAE Processed Pure Magnesium

Biswas, Somjeet and ingh, Satyaveer D and Suwas, Satyam (2009) Grain Growth in ECAE Processed Pure Magnesium. In: International Conference on Microstructure and texture in Steels and Other Materials, FEB 05-07, 2008, Jamshedpur, pp. 465-473.

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Grain growth kinetics was studied for commercially pure magnesium subjected to equal channel angular extrusion (ECAE). The specimens were ECAE processed upto 4 passes at 523 K following all the three important routes, namely A, 13, and C. Texture and microstructures of the samples were studied using Electron Back Scattered Diffraction (EBSD) technique in a Field Emission Gun Scanning Electron Microscope (FEG-SEM). It was observed that the grain size significantly reduces after ECAE. ECAE process produces a slightly rotated B and C-2 fiber. Static annealing leads to normal grain growth with unimodal distribution of grains through out the temperature range. Average activation energy for grain growth in the temperature range studied is found to be less than the activation energy for lattice diffusion and grain boundary diffusion of magnesium. No significant change in texture during isochronal annealing for 1 hour i.e., the predominant deformation texture remains same.

Item Type: Conference Paper
Publisher: Springer
Additional Information: Copyright of this article belongs to Springer.
Keywords: Magnesium; ECAE; EBSD; DRX; Texture.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 02 Nov 2010 05:59
Last Modified: 02 Nov 2010 05:59
URI: http://eprints.iisc.ac.in/id/eprint/33576

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