Intergranular corrosion in AA2024-T3 aluminium alloy: The influence of stored energy and prediction

被引：58

作者：

Zhang, Xinxin ^{[1
,2
]}

Jiao, Yanbin ^{[1
]}

Yu, Yang ^{[1
]}

Liu, Bing ^{[2
,3
]}

Hashimoto, Teruo ^{[2
]}

Liu, Hongfang ^{[1
]}

Dong, Zehua ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Hubei Key Lab Mat Chem & Serv Failure, Key Lab Mat Chem Energy Convers & Storage, Minist Educ,Sch Chem & Chem Engn, 1037 Luoyu Rd, Wuhan 430074, Peoples R China

[2] Univ Manchester, Sch Mat, Ctr Corros & Protect, Manchester M13 9PL, Lancs, England

[3] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

来源：

CORROSION SCIENCE | 2019年 / 155卷

关键词：

Aluminium; SEM; TEM; Intergranular corrosion; LOCALIZED CORROSION; HEAT-TREATMENT; BEHAVIOR; PROPAGATION; SI; MICROSTRUCTURE; SUSCEPTIBILITY; EXTRUSION; EVOLUTION;

D O I：

10.1016/j.corsci.2019.04.031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present work, microstructure and intergranular corrosion behaviour of AA2024-T3 alloy are studied. Using electron diffraction techniques to correlate stored energy distribution with corrosion propagation path, intergranular corrosion tends to occur in the periphery of grain with relatively high stored energy. Further, it is revealed that Cu tends to segregate at dislocations, resulting in high Cu content of grain with high stored energy, which promotes corrosion propagation into its interior. In addition, based on the relationship between stored energy and boundary attack, intergranular corrosion during the immersion in NaCl solution could be successfully predicted.

引用

页码：1 / 12

页数：12

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