Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Technical report
Interface microstructure observation for welds of an alumina ceramics and an aluminum alloy with friction stir spot welding
Hirosuke SONOMURATomoatsu OZAKIKazuaki KATAGIRIYasunori HASEGAWATsutomu TANAKA
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2019 Volume 127 Issue 2 Pages 127-130

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Abstract

A 5 mm thick alumina ceramic plate and a 1 mm thick aluminum alloy plate were welded together by a friction stir spot welding technique. The welding was performed at tool rotation rate of 2000 rpm, plunge time of 0.4 mm, dwell time of 60 s, and plunge rate of approximately 0.1 mm/min. The interface microstructure of the welds was investigated by a scanning transmission electron microscope and energy dispersive X-ray spectrometry analysis to study the welding mechanism. A magnesium element was detected along the interface. It was expected that the alumina ceramic plate and the aluminum alloy plate were welded via magnesium oxide or a magnesium–aluminum–oxygen compound.

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© 2019 The Ceramic Society of Japan
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