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Uniaxial and Plane Strain Compression Behaviour of Magnesium Alloy AZ31: A Comparative Study
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Uniaxial and Plane Strain Compression Behaviour of Magnesium Alloy AZ31: A Comparative Study

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Abstract:

Texture evolution and microstructure development of hot extruded magnesium alloy AZ31 deformed by PSC and uniaxial deformation at select temperatures and a constant strain rate of 10-4 s-1 were investigated and compared using X-ray techniques, electron back scattered diffraction (EBSD) and optical microscopy. At a deformation temperature of 200 °C both deformation routes resulted in a similar crystallographic texture and showed a heterogeneous microstructure consisting of highly deformed zones appearing as huge and/or elongated grains containing twins and shear bands embedded in a very fine-grained microstructure. High temperature deformation (400 °C) gave rise to completely different deformation textures for the two processes. Uniaxial deformation tended to randomize the initial extrusion texture, whereas in PSC a prismtexture {10-10}<11-20> prevailed. The flow stress was found to be strongly dependent on loading conditions and deformation modes.

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Periodical:

Materials Science Forum (Volume 550)

Pages:

229-234

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.550.229

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Online since:

July 2007

Authors:

Talal Al-Samman, Bashir Ahmad, Günter Gottstein

Keywords:

Magnesium, Plane Strain Deformation, Texture, Uniaxial Deformation

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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