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Processing Conditions and Mechanical Properties of Fine Grained Mg by Equal Channel Angular Pressing

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Abstract:

Mg and Mg alloys are promising materials for light weight high strength applications. In this paper, grain refinement of pure Mg using severe plastic deformation was tried to enhance mechanical properties of the hard-to-deform metallic material. The microstructure and the mechanical properties of Mg processed by equal channel angular pressing (ECAP) at various processing temperatures were investigated experimentally. ECAP of channel angle of 90o and corner angle of 0o was successful without fracture of the samples at 300 oC. The hardness of the ECAP processed Mg decreased with increasing ECAP processing temperature. The effect of temperature on the hardness and microstructure of the ECAP processed Mg were explained by the dislocation glide in the basal plane and non-basal slip systems and the dynamic recrystallization and recovery.

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Periodical:

Key Engineering Materials (Volumes 340-341)

Pages:

913-917

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.340-341.913

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Online since:

June 2007

Authors:

Seung Chae Yoon, Young Gi Jeong, Sun Ig Hong, Byong Sun Chun, Hong Rho Lee, Kyeong Ho Baik, Hyoung Seop Kim

Keywords:

Equal-Channel Angular Pressing (ECAP), Fracture, Grain Refinement, Magnesium, Processing Temperature, Severe Plastic Deformation (SPD)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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