Correlation between corrosion resistance, anodic hydrogen evolution and microhardness in friction stir weldment of AA2198 alloy

被引：29

作者：

Donatus, Uyime ^{[1
]}

Goncalves de Viveiros, Barbara Victoria ^{[1
]}

de Alencar, Maicon Cavalieri ^{[1
]}

Ferreira, Raphael Oliveira ^{[2
]}

Milagre, Mariana Xavier ^{[1
]}

Costa, Isolda ^{[1
]}

机构：

[1] Inst Pesquisas Energet & Nucl, Ave Prof Lineu Prestes 2242, Sao Paulo, Brazil

[2] Univ Sao Paulo, Escola Politecn, Ave Prof Mello Moraes 2463, Sao Paulo, SP, Brazil

来源：

MATERIALS CHARACTERIZATION | 2018年 / 144卷

基金：

巴西圣保罗研究基金会;

关键词：

Aluminium alloy; Friction stir welding; Pitting corrosion; Anodic hydrogen evolution; DISSIMILAR ALUMINUM-ALLOYS; COPPER-LITHIUM ALLOY; CU-LI ALLOY; LOCALIZED CORROSION; WELDING JOINT; BEHAVIOR; AL; MICROSTRUCTURE; MG; POLARIZATION;

D O I：

10.1016/j.matchar.2018.07.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Correlation between corrosion resistance, anodic hydrogen evolution and microhardness in the friction stir weldment of AA2198-T851 alloy has been investigated. Different microscopy techniques, scanning vibrating electrode technique (SVET) and potentiodynamic polarization tests were employed in the investigation. Unlike other 3rd generation Al-Cu-Li alloys where the regions that are most susceptible to corrosion are always within the weld region, the results reveal that the parent material is the most susceptible in this case. There is a direct correlation between corrosion resistance, anodic hydrogen evolution and microhardness in the weldment, and the T-1 phase is associated with the direct correlation.

引用

页码：99 / 112

页数：14

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