Analyzing through-thickness corrosion homogeneity of stabilized AA5083 alloy after artificial sensitization

被引：4

作者：

Meng, Ya ^{[1
]}

Deng, San-xi ^{[1
]}

Liu, Zhen-zhen ^{[1
]}

Xiang, Hui ^{[1
]}

Li, Heng-shi ^{[1
]}

Wang, Yuan

Yan, Yuan-Ming ^{[2
]}

Li, Jin-Feng ^{[1
]}

Zhang, Rui-Feng ^{[1
]}

机构：

[1] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China

[2] Shenzhen Zhongjin Lingnan Nonfemet Technol Co Ltd, Shenzhen 518122, Peoples R China

来源：

CORROSION COMMUNICATIONS | 2024年 / 16卷

关键词：

Al-Mg alloy; Sensitization; Precipitate; Through-thickness; AL-MG ALLOYS; BETA-PHASE PRECIPITATION; STRESS-CORROSION; MN ALLOY; CRACKING; BEHAVIOR; SUSCEPTIBILITY; ORIENTATION; MITIGATION;

D O I：

10.1016/j.corcom.2024.03.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Through-thickness corrosion homogeneity of stabilized AA5083 alloy thick plate was investigated. For the asreceived stabilized plates, no differences in corrosion behavior are evident in the specimens from different sampling positions along the thickness direction. However, in the plates after sensitization, the specimen from the surface position (T/10, SP) exhibits the highest degree of sensitization (DoS) and stress corrosion cracking (SCC) susceptibility, indicating the through-thickness corrosion inhomogeneity. Compared with interlayer position (3T/10, IP) and center position (T/2, CP), the higher grain stored energy and richer high angle grain boundaries (HAGBs) in SP specimens promote the formation of /3 phases (Al3Mg2) during the sensitization process. It results in a high coverage of /3 phases in the SP specimen and therefore induces severe corrosion. (c) 2024 The Author(s). Published by Elsevier B.V. on behalf of Institute of Metal Research, Chinese Academy of Sciences. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

引用

页码：24 / 34

页数：11

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