Understanding Material Flow at the Interface of Friction Stir Lap Welding (FSLW) of Al-to-Cu Plates

Date
2019
Authors
Parningotan, Doddy
Supervisor
Pasang, Timotius
Chen, Zhan
Item type
Thesis
Degree name
Doctor of Philosophy
Journal Title
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Volume Title
Publisher
Auckland University of Technology
Abstract

Aluminium to copper bimetal parts have seen wide use in electrical componentry. A continuous interface between the two alloys is necessary in order to have unhampered electron path. Friction stir welding, especially in a lap configuration (FSLW), is a proven method in the production of continuous welds with dissimilar metals, producing a metallurgical joint in the form of interfacial intermetallic layer formed in between the plates. However, from existing literature there is no evidence of a discontinuity-free interface in aluminium-to-copper FSLW.

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Keywords
Friction stir lap welding , Aluminium-to-copper , Interfacial continuity , Material flow , Scriber
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