The Large Strain Flow Stress Behaviour of Aluminium Alloys as Measured by Channel-Die Compression (20-500°C)

A. Bacha; Claire Maurice; Helmut Klocker; Julian H. Driver

doi:10.4028/www.scientific.net/MSF.519-521.783

Paper Titles

Influence of Zincate Treatment on Adhesion Strength of Electroless Nickel-Phosphorus Plated Film for Commercial Pure Aluminium
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Surface Modification of Aluminium Alloys
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Effect of Copper Content on the Bendability of Al-Mg-Si Alloy Sheet
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Characterization of Ageing Products in AA6111 Using Dynamic Dislocation-Defect Analysis
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The Large Strain Flow Stress Behaviour of Aluminium Alloys as Measured by Channel-Die Compression (20-500°C)
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Temperature-Dependent Shear Strain Localization of Aluminium-Lithium Alloy in Uniaxial Compression Using Zerilli-Armstrong and Gradient Plasticity Models
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Overview of Forming and Formability Issues for High Volume Aluminium Car Body Panels
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Mapping the Crystal Orientation Distribution Function to Discrete Orientations in Crystal Plasticity Finite Element Forming Simulations of Bulk Materials
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Study of Microstructure and Texture Evolution Using In-Situ EBSD Investigations and SE Imaging in SEM
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HomeMaterials Science ForumMaterials Science Forum Vols. 519-521The Large Strain Flow Stress Behaviour of...

The Large Strain Flow Stress Behaviour of Aluminium Alloys as Measured by Channel-Die Compression (20-500°C)

Abstract:

Two recent methods for obtaining flow stress-strain relations up to large strains of order 1.5 by channel-die compression are presented: i) for sheet metal formability tests, composite samples have been made of glued sheet layers and deformed at room temperature in a channel-die with the compression axis directed along one of the sheet metal edge directions, i.e. RD or TD. The sheet plane is parallel to the lateral compression die face. It is shown that, using a suitable lubricant, the sample deformation is homogeneous up to strains of 1.5. Tests carried out on 5xxx and 6xxx alloys to evaluate the stress-strain relations show that a generalized Voce law gives a good quantitative fit for the data. ii) for high temperature plate processing, quantitative flow stress data can be obtained up to 500°C with a rapid quench using a hot channel-die set-up. Some new results are presented here for high strain hot PSC tests on Al-Mn and Al-Mg alloys together with microstructure analyses.