Microstructure and texture evolution of Pure magnesium during ecae

Biswas, Somjeet and Singh, Satyaveer D and Suwas, Satyam (2011) Microstructure and texture evolution of Pure magnesium during ecae. In: VI International Conference on Mechanochemistry and Mechanical Alloying (INCOME 2008), 1-4 December 2008, NML Jamshedpur, India.



Initially hot rolled commercially pure magnesium and having a basal texture was deformed by Equal Channel Angular Extrusion (ECAE). ECAE was carried out up to 4 passes in a 90° die following three different routes (A, Bc and C) at a temperatures of 523 K. Systematic analysis of microstructures, grain size distributions, texture and grain boundary character distributions was carried out using electron back scattered diffraction in field emission gun scanning electron microscope in the transverse plane. In addition to significant reduction in grain size, strong <0002> fiber texture inclined at an angle ~ 45o from the extrusion axis formed in the material. Texture was also analyzed by orientation distribution function (ODF) and compared vis-à-vis shear texture. A significant amount of dynamic recrystallization occurred during ECAE, which apparently did not influence the deformation texture.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://eprints.nmlindia.org/5087
Uncontrolled Keywords:Equal Channel Angular Extrusion (ECAE), Texture, Microstructure, Electron Back Scattered Diffraction (EBSD), Discontinuous Dynamic Recrystallization (DDRX)
Divisions:Metal Extraction and Forming
ID Code:5087
Deposited On:04 May 2012 12:34
Last Modified:18 Sep 2012 10:29
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