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Meeting Materials Science & Technology 2019
Symposium Corrosion of Additively Manufactured Metals
Presentation Title Corrosion Performance of Aluminium Based Functionally Graded Materials Processed by Wire-arc Additive Manufacturing
Author(s) Amin S. Azar, Martin F. Sunding, Nicky Tzima, Spyros Diplas, Angeliki Lekatou, Spyros Kleftakis
On-Site Speaker (Planned) Amin S. Azar
Abstract Scope Wire-arc additive manufacturing of metallic materials provide the opportunity of processing functionally graded materials (FGMs). However, abrupt changes in the composition of the materials may have consequences on the corrosion performance of the final structure. In addition to the compositional variations, the microstructure also varies along the build direction since each deposited layer creates heat affected zone on the material underneath. This can result in precipitation of secondary phases or local coarsening of the microstructure that will also influence the corrosion properties of the material. In this study, Al-5Mg material was laid over an AA-6061 substrate in the form of a block. The block was electrochemically tested through the cross-section (along two different directions) by cyclic polarization in 3.5 wt.% NaCl. The objective was to identify any different electrochemical behavior between the various deposited layers. XPS was also carried out to show the spatial distribution and chemical state of the corrosion products.
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Corrosion of Additive Materials for Naval Applications
Corrosion of Additively Manufactured Stainless Steels – Process, Structure, and Performance
Corrosion Performance of Aluminium Based Functionally Graded Materials Processed by Wire-arc Additive Manufacturing
Effect of Chloride and Heat Treatment on Pitting Corrosion Resistance and Mechanical Properties of a 316L Stainless Steel Manufactured by the Direct Metal Laser Sintering (DMLS) Process
Effect of Surface Finish on the Corrosion Properties of Additively Manufactured Stainless Steel
Electrochemical Characterization of Additively Manufactured Al-10Si-Mg in Standardized Test Solutions
Evaluation of the Corrosion Response of Additively-Manufactured 17-4 PH Stainless Steel Samples as a Function of Build and Finish Parameters
High Temperature Oxidation and Creep Oxidation of Compositionally Graded Alloys in Air and Supercritical CO2: Modeling and Experiment
High Temperature Oxidation of 718 Alloy Produced by Additive Manufacturing
Hydrogen Concentration and Uptake in Additively Manufactured Austenitic Stainless Steels
Improved Electrochemical Response of SLM 316L SS in Physiological Solutions
Issues in Localized Corrosion of Selective Laser Melted 316L
P3-37: Microstructure and Corrosion Behavior of Alloy 625 Produced by Laser Powder Bed Fusion
Surface Damage of an AM-AlSi10Mg Alloy Exposed to Corrosive Environments with Lack of Fusion Defects and Powder Contamination
Surface Preparation of Additively Manufactured Metals and Subsequent Comparison of Corrosion Characteristics
The Effects of Laser Peening Parameters on the Corrosion and Hardness Properties of Ti6Al4V Alloy
Understanding the Influence of Retained Nitrogen in Additively-Manufactured 17-4 Stainless Steel: Does it Really Improve Corrosion Resistance?

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