High Temperature Deformation of Cast ZW11 Magnesium Alloy with Very Large Grain Size

Kamineni Pitcheswara Rao; M. Bagheripoor; Hajo Dieringa; N. Hort

doi:10.4028/www.scientific.net/KEM.725.232

Paper Titles

A Simulation of Ferroelastic Phase Formation by Using Phase Field Model
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Subsequent Yield Behavior of Hexagonal Metal with Rolling Texture
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On the Role of Grains in Plastic Deformation and Low Cycle Fatigue of Polycrystalline Metal
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High Temperature Deformation of Cast ZW11 Magnesium Alloy with Very Large Grain Size
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 725High Temperature Deformation of Cast ZW11...

High Temperature Deformation of Cast ZW11 Magnesium Alloy with Very Large Grain Size

Abstract:

Magnesium (Mg) alloys are considered for biomedical applications due to their matching bone density and biodegradable/abioabsorable nature. Mg-1% Zinc-1% Yttrium (ZW11) alloy was cast using a direct chill slow cooling process to obtain dense ingot with uniform composition. However, the resultant alloy developed a very coarse grained microstructure with a grain size in the range of 2,600 to 4,000 μm (2.6-4.0 mm). The hot working behavior of ZW11 alloy has been investigated using compression tests in the temperature and strain rate ranges of 340-540 °C and 0.0003 – 10 s^-1 to evaluate the optimum processing parameters. A processing map has been developed on the basis of the flow stress data. The processing map reveals a window of workability in the temperature and strain rate ranges of 460-540 °C and 0.0003-10 s^-1 and regimes of flow instability. The microstructures of the deformed alloy provided support to the processing map.

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Periodical:

Key Engineering Materials (Volume 725)

Pages:

232-237

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.725.232

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Online since:

December 2016

Authors:

Kamineni Pitcheswara Rao*, M. Bagheripoor, Hajo Dieringa, N. Hort

Keywords:

Hot Deformation, Magnesium Alloy, Microstructure, Processing Map

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