Authors: | Faes, K. Kwee, I. |
Title: | Electromagnetic Pulse Welded Aluminium to Copper Sheet Joints: Morphological and Mechanical Characterization |
Language (ISO): | en |
Abstract: | This study investigated joining of Al to Cu sheets by electromagnetic pulse welding, which is a solid-state welding process that uses electromagnetic forces to join materials. The interfacial morphology and mechanical properties of the Al/Cu joints were analysed and related to the welding process parameters. The centre section of the Al/Cu joints evolved from a non-welded to a welded zone. The welded zone started with a wavy interface, consisting of thick interfacial layers with defects and evolved to a relatively flat interface without an interfacial layer. Interfacial phases resulted from solid-state mechanical mixing and/or very localised interfacial heating. The interfacial layers had a thickness ranging from 2-39 μm, an interface waviness amplitude up to 11 μm and contained 31-75 wt% Cu. The interfacial layer thickness and the weld length are determined by both the discharge energy and the stand-off distance. A trade-off existed between a homogeneous interface and the maximum weld length when the stand-off distance is changed. The interfacial layer exhibited an increased hardness compared to Al and Cu. A higher tensile force, up to 4,9 kN, was achieved at a higher energy and a lower stand-off distance. One of the factors determining the tensile force was the width of the welded area. |
Subject Headings: | welding analysis sheet metal |
URI: | http://hdl.handle.net/2003/34948 http://dx.doi.org/10.17877/DE290R-16996 |
Issue Date: | 2016-04-27 |
Is part of: | 7th International Conference on High Speed Forming, April 27th-28th 2016, Dortmund, Germany |
Appears in Collections: | ICHSF 2016 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
28_Faes_ICHSF2016.pdf | DNB | 2.05 MB | Adobe PDF | View/Open |
This item is protected by original copyright |
This item is protected by original copyright rightsstatements.org