Application of High-Pressure Sliding for Grain Refinement of Al and Mg Alloys

Kiyonari Tazoe; Shuji Honda; Z. Horita

doi:10.4028/www.scientific.net/MSF.667-669.91

Paper Titles

Effect of a Special ECAP Die Configuration on Microhardness Distributions in Pure Aluminum
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Finite Element Simulation of Die Design for Warm Equal Channel Angular Extrusion Process of AZ31 Alloy and its Experimental Investigation
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Finite Element Simulation of Effects of Mould Angle and Friction on ECAP for AZ80 Magnesium Alloy
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Nano-Refinement, Nano-Consolidation: Different Fabrication Routes of Nano-Crystalline Aluminium Alloys
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Application of High-Pressure Sliding for Grain Refinement of Al and Mg Alloys
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Simple Shear: Double-Stage Deformation
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Severe Plastic Deformation by Equal Channel Angular Swaging
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Study on the Fabrication of Nanocrystalline Copper by Explosive Dynamic Loading
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Simulation of Multi-Pass ECAP by 3D Finite Element Method
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HomeMaterials Science ForumMaterials Science Forum Vols. 667-669Application of High-Pressure Sliding for Grain...

Application of High-Pressure Sliding for Grain Refinement of Al and Mg Alloys

Abstract:

An earlier study showed that high-pressure sliding (HPS) is effective for grain refinement of pure Al in a rectangular sheet form using the principle of high-pressure torsion. In this study, the HPS is applied for grain refinement of an Al-3%Mg-0.2%Sc alloy and an AZ61 Mg alloy. HPS was conducted under a pressure of 1 GPa with sliding distances of 10 to 30 mm at room temperature for the Al alloy and at 473 K for the Mg alloy The average grain size is ~300 nm for both the Al and Mg alloys, respectively. Tensile tests showed that a superplastic elongation of ~1500% is achieved in the Al-3%Mg-0.2%Sc alloy at 573 K with an initial strain rate of 3.3x10-3 s-1 and of ~600% in the AZ61 alloy at 573 K with an initial strain rate of 1x10-3 s-1.

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Periodical:

Materials Science Forum (Volumes 667-669)

Pages:

91-96

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.667-669.91

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Online since:

December 2010

Authors:

Kiyonari Tazoe, Shuji Honda, Z. Horita

Keywords:

Aluminium Alloy, Grain Refinement, High-Pressure Sliding, Mg Alloy, Superplasticity

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