Influence of thermomechanical treatment on the corrosion behaviour of 2A97 Al-Cu-Li alloy

被引：11

作者：

Lv, You ^{[1
]}

Hashimoto, Teruo ^{[2
]}

Zhou, Xiaorong ^{[2
]}

Zhang, Xinxin ^{[1
]}

机构：

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

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

来源：

CORROSION COMMUNICATIONS | 2024年 / 15卷

基金：

中国国家自然科学基金;

关键词：

Intergranular corrosion; Intragranular corrosion; Thermomechanical treatment; Grain-stored energy; LOCALIZED CORROSION; INTERGRANULAR CORROSION; MECHANICAL-PROPERTIES; GRAIN-ORIENTATION; LITHIUM ALLOY; MICROSTRUCTURE; COPPER; EVOLUTION; AEROSPACE; PRODUCTS;

D O I：

10.1016/j.corcom.2023.10.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present work, the corrosion behaviour of 2A97 Al-Cu-Li alloy with different thermomechanical treatments is investigated using electron microscopy and electrochemical measurements. The various thermomechanical treatments allowed the assessment of the individual and synergistic influence of local plastic deformation and precipitation on the corrosion susceptibility and mechanism of the alloy. It is found that in NaCl solution, corrosion of the alloys in T3 and T4 tempers occurs in the form of intergranular corrosion, which is closely associated with stored energy distribution. By contrast, the alloys in T6 and T8 tempers exhibit mainly intragranular corrosion due to high volume fractions of precipitates formed by artificial ageing. (c) 2024 The Authors. 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 license ( http://creativecommons.org/licenses/by/4.0/ )

引用

页码：13 / 23

页数：11

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