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Indexed by:期刊论文

Date of Publication:2012-01-01

Journal:CORROSION SCIENCE

Included Journals:SCIE、EI

Volume:54

Issue:1

Page Number:212-218

ISSN No.:0010-938X

Key Words:Magnesium; Polarization; Welding

Abstract:The paper investigates the corrosion behavior of the lap joint of AZ31 magnesium alloy to Q235 steel with salt solution immersion testing and electrochemical testing. It is demonstrated that grain refinement resulting from the welding process has little effect on the corrosion behavior of the lap joint. However, the cathodic phases formed in the welding process and the galvanic corrosion between magnesium alloy and steel decrease the corrosion resistance of the joint greatly. Besides, neither Cu nor Ni, as filler material, could improve the corrosion resistance of the joint, but the arc-sprayed Al coating acting as a protective layer could. (C) 2011 Elsevier Ltd. All rights reserved.