Thermomechanical treatment and corrosion resistance correlation in the AA2198 Al-Cu-Li alloy

被引：39
|
作者：
de Sousa Araujo, Joao Victor [1 ]
Santos Bugarin, Aline de Fatima [1 ]
Donatus, Uyime [1 ]
Carvalho Machado, Caruline de Souza [1 ]
Queiroz, Fernanda Martins [1 ]
Terada, Maysa [1 ]
Astarita, Antonello [2 ]
Costa, Isolda [1 ]
机构：
[1] IPEN CNEN, Inst Pesquisas Energet & Nucl, Av Prof Lineu Prestes 2242, Sao Paulo, Brazil
[2] Univ Naples Federico II, Dept Chem Mat & Ind Prod Engn, Naples, Italy
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2019年 / 54卷 / 07期
基金：
巴西圣保罗研究基金会;
关键词：
Aluminium-lithium alloys; thermomechanical treatments; severe localised corrosion; ALUMINUM-LITHIUM ALLOY; LOCALIZED CORROSION; BEHAVIOR; MICROSTRUCTURE; SUSCEPTIBILITY; MECHANISM; KINETICS; PRECIPITATION; EVOLUTION; COPPER;
D O I：
10.1080/1478422X.2019.1637077
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of T3, T8 and T851 thermomechanical treatments on the microstructure and corrosion resistance of the AA2198 was investigated. Differential scanning calorimetry and scanning electron microscopy were used for microstructural characterisation, whereas electrochemical methods were employed to analyse the corrosion behaviour of the alloy. The morphology and composition of constituent particles were similar for the T3 and T8 thermomechanical treatments but varied in the T851. There was an inverse relation between T1 phase density and corrosion resistance. The T3 treatment with the highest corrosion resistance was the one with the lowest density of T1 phase. The mechanisms of corrosion varied with the thermomechanical treatments.
引用
收藏
页码：575 / 586
页数：12
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