Physical Simulation of Longitudinal Weld Seam Formation During Extrusion to Produce Hollow Aluminum Profiles

Uniaxial compression tests were performed to understand the solid-state bonding process that occurs in porthole dies during the manufacturing of hollow aluminum extrusions. Strain, strain rate, and temperature applied during the tests were those typically encountered during aluminum extrusion. For a...

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Bibliographic Details
Published in:Materials and manufacturing processes 2009-02, Vol.24 (4), p.409-421
Main Authors: Edwards, S.-P., den Bakker, A. J., Zhou, J., Katgerman, L.
Format: Article
Language:English
Subjects:
Aluminum
Aluminum alloys
Extrusion
Hollow profile
Hot compression
Microstructure
Physical simulation
Plastic deformation
Porthole die
Profile
Solid-state bonding
Thermomechanical simulator
Weld seam
Welding
Wrought product
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Summary:Uniaxial compression tests were performed to understand the solid-state bonding process that occurs in porthole dies during the manufacturing of hollow aluminum extrusions. Strain, strain rate, and temperature applied during the tests were those typically encountered during aluminum extrusion. For a good bond, strain was found to be the most influential parameter, along with bonding time. The effect of temperature on bonding depended on alloy composition. Bonding stress was less influential within the range investigated. Surface stretching was introduced to the AA6060, AA6082, and AA7020 aluminum alloys as a criterion to quantify the bonding phenomena and distinguish their bondabilities.
ISSN:1042-6914
1532-2475
DOI:10.1080/10426910802714290