The Influence of the SPD Temperature on Superplasticity of Aluminium Alloys

Rinat K. Islamgaliev; N.F. Yunusova; Ruslan Valiev

doi:10.4028/www.scientific.net/MSF.503-504.585

Paper Titles

Fabrication of a W-25%Cu Nanocomposite by High Pressure Torsion
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Structural Analysis and Properties of Bi_2-xSb_xTe_3-ySe_y Prepared by Angular Extrusion
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Fabrication of Nano Grain Tungsten Compact by Mechanical Milling Process and Its High Temperature Properties
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Microstructure and Mechanical Properties of Pure Nickel Processed by Severe Plastic Deformation
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The Influence of the SPD Temperature on Superplasticity of Aluminium Alloys
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Increasing the Mechanical Properties of FCC- and BCC-Metals by Combined Cold Severe Plastic Deformation
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Substructure and Nanocrystalline Structure Effects in Thermomechanically Treated Ti-Ni Alloys
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Three-Dimensional Imaging of Shear Band Produced by ECAP Process in Al-Ag Alloy
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The Influence of the ECAP Temperature on Microstructure and Mechanical Properties of a Magnesium Alloy
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HomeMaterials Science ForumMaterials Science Forum Vols. 503-504The Influence of the SPD Temperature on...

The Influence of the SPD Temperature on Superplasticity of Aluminium Alloys

Abstract:

Recent studies have demonstrated that ultrafinе-grainеd (UFG) alloys processed by equal channel angular pressing (ECAP) and high pressure torsion (HPT) can exhibit enhanced supеrplacticity at relatively low temperature and/or high strain rates. At the same time severe plastic deformation (SPD) of aluminium alloys is often carried out at elevated temperatures leading to various grain size and volume fraction of precipitates. The significance of the SPD temperature for commercial 1420 and 1421 aluminium alloys has been evaluated in this paper using in-situ heating of thin foils in the column of a transmission electron microscope. Superplastic characteristics of alloys processed at various ECAP temperatures are discussed.