Microstructure and pitting corrosion of friction Stir welded joints in 2219-O aluminum alloy thick plate

被引：99

作者：

Xu, Weifeng ^{[1
]}

Liu, Jinhe ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Mat & Engn, Xian 710072, Peoples R China

来源：

CORROSION SCIENCE | 2009年 / 51卷 / 11期

关键词：

Aluminum alloy; SEM; Polarization; EIS; Pitting corrosion; MECHANICAL-PROPERTIES; SUSCEPTIBILITY; PARAMETERS; BEHAVIOR;

D O I：

10.1016/j.corsci.2009.07.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effect of welding parameters on the microstructure and pitting corrosion of different positions along the thickness of weld nugget zone in friction stir welded 2219-O aluminum alloy plate was investigated using scanning electron microscopy (SEM), polarization experiment and electrochemical impedance tests (EIS). It was found that the material presents significant passivation and the top has best corrosion resistance compared to the bottom and base material. Corrosion resistance decreases with the increase of traverse speed from 60 to 100 mm/min at rotary speed 400 rpm. Corrosion resistance at rotary speed 600 rpm is lower than that at 500 rpm. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.

引用

页码：2743 / 2751

页数：9

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