Analysis of modal acoustic emission signals of LY12CZ aluminum alloy at anodic and cathodic polarization

被引：19

作者：

Chang, H

Han, EH

Wang, JQ

Ke, W

机构：

[1] Chinese Acad Sci, Met Res Inst, Environm Corros Ctr, Shenyang 110016, Peoples R China

[2] Shenyang Ligong Univ, Mat Sci & Engn Coll, Shenyang 110168, Peoples R China

来源：

NDT & E INTERNATIONAL | 2006年 / 39卷 / 01期

关键词：

modal acoustic emission; LY12CZ aluminum alloy; polarization; source identification;

D O I：

10.1016/j.ndteint.2005.05.006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Modal acoustic emission technique was used to analyze corrosion signals produced by polarization corrosion of LY12CZ aluminum alloy. The results showed that there were two-type waveforms for both anodic and cathodic polarization. Only extensional signals appeared within 1800 s, but extensional and flexural signals both appeared beyond 1800 s. The frequency spectrums were presented and analyzed, and potential source identification was discussed. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：8 / 12

页数：5

共 11 条

[1] Microconstituent-induced pitting corrosion in aluminum alloy 2024-T3 [J].