On the corrosion of a high solute Al-Zn-Mg alloy produced by laser powder bed fusion

被引：46

作者：

Babu, A. P. ^{[1
]}

Choudhary, S. ^{[1
]}

Griffith, J. C. ^{[1
,2
]}

Huang, A. ^{[1
,3
]}

Birbilis, N. ^{[4
]}

机构：

[1] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia

[2] Monash Univ, Monash Xray Platform, Clayton, Vic 3800, Australia

[3] Monash Univ, Monash Ctr Addit Mfg, Clayton, Vic 3800, Australia

[4] Australian Natl Univ, Coll Engn & Comp Sci, Acton, ACT 2601, Australia

来源：

CORROSION SCIENCE | 2021年 / 189卷

关键词：

A; Aluminium; B; Polarization; C; Anodic dissolution; Pitting corrosion; Passive films; ALUMINUM-ALLOYS; INTERMETALLIC PHASES; MICROSTRUCTURE; STRENGTH; CU; IMPEDANCE;

D O I：

10.1016/j.corsci.2021.109626

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An additively manufactured aluminium alloy with very high solute content, Al-14Zn-3Mg (wt. %), was studied herein. Compared to wrought AA7075-T6 as a benchmark, Al-14Zn-3Mg revealed a lower rate of corrosion, attributed to its microstructure and solute content. Specifically, the lack of coarse intermetallic particles in the Al-14Zn-3Mg led to reduced cathodic kinetics relative to AA7075-T6. Potentiodynamic polarisation tests and electrochemical impedance spectroscopy analysis was performed, along with XPS studies of the corresponding surface films. The findings herein demonstrate the corrosion behaviour of a new high solute aluminium alloy manufactured in net shape through LPBF.

引用

页数：16

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