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Effect of ultrasound treatment of AlSi5 liquid alloy on corrosion resistance

✍ Scribed by A. Arrighini; M. Gelfi; A. Pola; R. Roberti

Publisher: John Wiley and Sons
Year: 2010
Tongue: German
Weight: 489 KB
Volume: 61
Category: Article
ISSN: 0947-5117
DOI: 10.1002/maco.200905303

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✦ Synopsis

Abstract

The application of power ultrasound to liquid alloys can be a simple and cost effective method to induce both degassing and grain refinement in a single step, without the need of inert gas or inoculants additions. In this paper, the treatment of liquid hypoeutectic AlSi5 alloy by ultrasound waves and its effects on microstructure were investigated. The corrosion behavior of ultrasound treated samples was compared to that of the non‐treated ones by means of immersion and electrochemical tests. It was observed that the ultrasound treated alloy offers better quality, higher mechanical properties and improved corrosion resistance, as a consequence of a more uniform distribution of the solute.

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