Study of the localized corrosion resistance of AA5083 aluminium alloy subjected to severe plastic deformation

被引：0

作者：

Vicere, A. ^{[1
]}

Cabibbo, M. ^{[1
]}

Forcellese, P. ^{[1
]}

Giuliani, G. ^{[1
]}

Bellezze, T. ^{[1
]}

机构：

[1] Univ Politecn Marche, Ancona, Italy

来源：

METALLURGIA ITALIANA | 2022年 / 114卷 / 02期

关键词：

ALUMINIUM ALLOYS; ECAP; LOCALIZED CORROSION; METASTABLE PITTING; CYCLIC ANODIC POLARIZATIONS; POTENTIOSTATIC POLARIZATIONS; PIT INITIATION;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In this work the localized corrosion behaviour of AA5083 aluminium alloy, subjected to severe plastic deformation (SPD) through the Equal Channel Angular Pressing technique (ECAP), useful to obtain an ultrafine microstructure, was studied. This process improves mechanical properties and modifies the microstructure of the alloy. With more details, the localized corrosion resistance of the AA5083 alloy subjected to thermal and cryogenic treatments and finally to ECAP was evaluated. Electrochemical characterization of this alloy was performed in aqueous solution 0.1 M of NaCl and pH 6.5, at room temperature, by means of cyclic potentiodynamic polarizations and potentiostatic polarizations for evaluating metastable pitting events. All tests were performed in deaerated conditions. The experimental results show that ECAP tends to increase AA5083 alloy localized corrosion susceptibility.

引用

页码：28 / 33

页数：6

共 11 条

[1] Study of stainless steels corrosion in a strong acid mixture. Part 1: cyclic potentiodynamic polarization curves examined by means of an analytical method [J].