Development of Al-Mg-Si-(Cu) Alloys for Automotive Body Panels and the Related Ageing Behaviours

Hao Zhong; Bin Liao; Xiao Dong Wu; Ling Fei Cao; Paul A. Rometsch

doi:10.4028/www.scientific.net/MSF.879.279

Paper Titles

Phase Constitution and Martensitic Transformation Behavior of Au-51Ti-18Co Biomedical Shape Memory Alloy Heat-Treated at 1173K to 1373K
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Thermal Plasticity Index of Nanostructured N-Based Coatings on HSS 6-5-2 (1.3343) Tool Steel
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Microstructural Investigation of Oxynitrocarburized Components Processed at Different Temperatures
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Numerical Simulation of the Effects of Preheating on Electron Beam Additive Manufactured Ti-6Al-4V Build Plate
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Development of Al-Mg-Si-(Cu) Alloys for Automotive Body Panels and the Related Ageing Behaviours
p.279

Optimal Deformation Hardening in Lead Base Anodes for Copper Electrowinning for an Appropiate Working Life
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Gold Recovery from PCBs with Thiosulfate as Complexing Agent
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Friction Stir Processing at High Rotation Rates of a Magnesium Alloy: Mechanical Properties at High Temperatures and Microstructure
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Fracture Surface Characterisation of Friction Stir Processed Magnesium Alloy after Mechanical Tests
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HomeMaterials Science ForumMaterials Science Forum Vol. 879Development of Al-Mg-Si-(Cu) Alloys for Automotive...

Development of Al-Mg-Si-(Cu) Alloys for Automotive Body Panels and the Related Ageing Behaviours

Abstract:

In this work, Al-Mg-Si-Cu alloys for automotive body panels were designed and the related ageing behaviours were discussed in detail to help understand natural ageing and pre-ageing, as well as their influence on the subsequent paint-bake response. The clustering behavior of these Al-Mg-Si-Cu alloys in different ageing conditions was investigated by hardness / yield strength and electrical conductivity testing. The microstructure was investigated by using Electron Backscattered Diffraction (EBSD) technique, along with Scanning Electron Microscopy with Backscattered Electron Detector (BSE). The results show that the paint bake response is strongly influenced by the pre-ageing and natural ageing conditions. Both alloys show serrated yielding in a short natural ageing condition. Immediate high-temperature pre-ageing treatments were found to give a promising hardening response during the subsequent artificial ageing/ paint baking at 170^oC.