Volume no :6, Issue no: -1, July and October (2012)

Journal of Materials Science and Engineering with Advanced Technology

QUANTIFICATION OF CORROSION RATE UNDER SALT FOG CORROSION TEST AND PITTING CORROSION TEST ON AZ61A MAGNESIUM ALLOY WELDS

Author's: A. DHANAPAL, S. RAJENDRA BOOPATHY, V. BALASUBRAMANIAN and A. R. THOHEER ZAMAN
Pages: [71] - [115]
Received Date: November 5, 2012; Revised November 26, 2012
Submitted by:

Abstract

Magnesium alloy plates of 6mm thick of AZ61A grade were butt welded using a solid state, autogenous, friction stir welding process. The joints were exposed under salt fog and electrochemical environments to characterize the corrosion rates of the FSW welds with the influence of pH, chloride ion concentration and the corrosion time in service applications to ensure such research is as effective as possible. The salt fog and pitting corrosion was quantified with different corrosion parameters. The corrosion rates were higher in salt fog conditions than the electrochemical performance of FSW welds.

Keywords

magnesium, weight loss, SEM, x-ray diffraction, welding, pitting corrosion.