Grain Refinement and Superplastic Deformation Behavior of Zn-Al Alloy

Keun Joon Kim; Gil Hwan Na; Tae Kwon Ha

doi:10.4028/www.scientific.net/MSF.706-709.1775

Paper Titles

Simulation on Nanostructured Metals Based on Multiscale Crystal Plasticity Considering Effect of Grain Boundary
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Microstructure Evolution during the Accumulative Roll Bonding Process in Armco Iron
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Numerical Analysis in the Process of Alternate Pressing and Multiaxial Compression
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Shear Strength Measurement of Gum Metal during High-Pressure Torsion
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Grain Refinement and Superplastic Deformation Behavior of Zn-Al Alloy
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Grain Refinement of Magnesium Alloys by CONFORM: A Continuous Severe Plastic Deformation Route?
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Experimental and Computational Studies of Competitive Precipitation Behavior Observed in Microstructures with High Dislocation Density and Ultra-Fine Grains
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Enhanced Low-Temperature Impact Toughness of Ultra-Fine Grained SiCp/ZL108 Composites
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Strengthening of Alloys with Elastic Anisotropy by Severe Plastic Deformation
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HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Grain Refinement and Superplastic Deformation...

Grain Refinement and Superplastic Deformation Behavior of Zn-Al Alloy

Abstract:

Grain refinement and superplastic deformation behavior of Zn-Al alloys were investigated in this study. To obtain fine grain size in Zn-0.3Al alloys, rolling and equal channel angular pressing (ECAP) were conducted at temperatures from 40 to 160°C after casting and homogenization heat treatment. Material processing maps for Zn-0.3Al alloy were constructed from a series of compression tests conducted at temperatures from RT to 200°C and strain rates from 3×10^-2 to 10¹ s^-1. Superplasticity of ECAPed specimens were evaluated at the temperature of 100°C under the strain rate of 2×10^-4 s^-1. After ECAP of the Zn-0.3Al alloy, elongation was dramatically increased up to 500%. The effects of ECAP on the texture and anisotropy in the superplastic deformation bebavior were found to be negligible.

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Materials Science Forum (Volumes 706-709)

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1775-1780

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https://doi.org/10.4028/www.scientific.net/MSF.706-709.1775

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Online since:

January 2012

Authors:

Keun Joon Kim, Gil Hwan Na, Tae Kwon Ha

Keywords:

Equal-Channel Angular Pressing (ECAP), Material Processing Map, Superplastic Deformation, Texture, Zn-Al Alloy

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