Experimental investigation of longitudinal and transverse welds during sideways extrusion
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Published version
Author(s)
Type
Conference Paper
Abstract
Differential velocity sideways extrusion (DVSE) is a novel process for fabricating curved profiles; welding quality during extrusion is an important issue for its industrial application. In this study, solid bars of aluminium alloy AA1070 were extruded from multiple billets at 500 °C using the novel process and the microstructure and mechanical properties of the extrudate were investigated. The weld formed between the billets includes longitudinal and transverse solid-state weld regions formed as the metal was extruded. The longitudinal welds have better mechanical properties than the transverse welds. Dynamic recrystallisation (DRX) occurred in areas with high dislocation density during the extrusion process and as a result, grains across the bonding interfaces of longitudinal welds have been formed, which improves the weld quality. In the areas with the transverse welds, macro weld defects can be observed at the weld front. With further progress of sideways extrusion, the defect density reduced and new grains formed at the bonding surface.
Date Issued
2022-12-19
Date Acceptance
2022-05-20
Citation
IOP Conference Series: Materials Science and Engineering, 2022, 1270, pp.1-7
ISSN
1757-8981
Publisher
IOP Publishing
Start Page
1
End Page
7
Journal / Book Title
IOP Conference Series: Materials Science and Engineering
Volume
1270
Copyright Statement
© 2022 The Author(s). Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Source
The 19th International Conference on Metal Forming (MF 2022)
Publication Status
Published
Start Date
2022-09-11
Finish Date
2022-09-14
Coverage Spatial
Virtual