Abstract
Joining by forming of magnesium alloys is restricted by the limited forming capability of magnesium at room temperature. To form acceptable joints without cracks usually heating of the parts to temperatures of 220°C or more is required. The application of state-of-the-art joining by forming methods (such as self-pierce-riveting or clinching with a contoured die) implicates pre-heating times of at least 3–6 s to achieve joints of acceptable quality. A new joining by forming technology, that is working with a flat anvil as a counter tool instead of the contoured die shall be introduced in this paper. This new technology is offering important advantages especially in joining Mg/Mg, Al/Mg or Fe/Mg connections, most remarkably being the reduction of pre-heating times to less than 1 s, thus allowing for the fast and reliable joining of magnesium parts. Parameter influences on the formation of the connections have been investigated and the values for the tensile strength have been determined for a wide range of connections.
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Acknowledgment
The authors are grateful to the Deutsche Forschungsgemeinschaft DFG (German Research Foundation) for generously supporting our research work in the priority program 1168 “Extending the range of applications of magnesium alloys”.
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Neugebauer, R., Mauermann, R., Dietrich, S. et al. A new technology for the joining by forming of magnesium alloys. Prod. Eng. Res. Devel. 1, 65–70 (2007). https://doi.org/10.1007/s11740-007-0045-5
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DOI: https://doi.org/10.1007/s11740-007-0045-5