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Erschienen in:
17.09.2018 | Technical Article
An Etching Technique for Characterizing Friction Stir Welds in Aluminum Alloy Tailor Welded Blanks
Erschienen in: Metallography, Microstructure, and Analysis | Ausgabe 5/2018
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Abstract
A dually functional metallographic sample etching technique is presented in this work, specifically for examining friction stir weld joints in aluminum alloys. While electrochemical etching aluminum alloys with Barker’s reagent is not new, the slightly modified etching procedure described here allows for analysis of both the oxide inclusions and the grain structure of the friction stir weld region on the same sample. The technique was shown to be effective for 5000 and 6000 series, and combinations of these alloys during this work. This etching technique was also shown to be useful for identifying other defects in the friction stir weld region during process development.