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Meeting MS&T22: Materials Science & Technology
Symposium Advanced Materials for Harsh Environments
Presentation Title Stress Corrosion Mitigation in Al-Mg via Zn-Rich Primers and Long-Term Performance Stability
Author(s) Matthew McMahon, Eric Dau, Allison Akman, Fatou Cisse
On-Site Speaker (Planned) Matthew McMahon
Abstract Scope The Al-Mg alloy AA5456 achieves a unique combination of weldability, general marine corrosion resistance, and high strength-to-weight ratio when utilized at relatively low temperatures in service. However, prolonged exposure to temperatures of at least 40ᵒC promotes Mg diffusion to the grain boundaries to form the highly anodic β phase in a process termed sensitization, which promotes stress corrosion cracking (SCC) and premature failure in seawater conditions. Previous work demonstrated that inorganic Zn-rich primers have a unique capability to provide stable, long-term cathodic protection that reduces the β phase corrosion rate and mitigates SCC in full immersion conditions. This work evaluates the maintenance of ZRP polarizability and cathodic protection performance over extended seawater and UV exposure, and quantifies the impact of primer degradation on the level of SCC mitigation achieved on highly sensitized AA5456. Testing is conducted in full immersion and alternate immersion conditions to more accurately simulate marine service conditions.
Proceedings Inclusion? Planned: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

An Investigation of High Temperature Corrosion Sensing for Coal-based Power Plant Operations
Characterization of Nb-Si Alloys for High-temperature Applications
CMAS Interaction with Model YAlO3 Environmental Barrier Coatings: Effect of Y3Al5O12 Precipitation on Apatite Nucleation and Growth
Corrosion Detection in Oil and Gas Pipeline Using 3-D Bluetooth Printed Microsensor
Corrosion Phenomena in Powder-Processed Aluminum Alloys Containing Quasicrystalline Dispersoids
Electrochemical Characterization of Joints Inconel 600 to TiC-Composites, Immersed in Seawater
Exfoliated-graphite-based Flexible Graphite as a Multifunctional Material for Harsh Environments
Expulsion of Arsenic Metals from Water Using Zinc Nanoparticles: A Review
Far-Field Passive Wireless Sensors using Conductive Ceramic for High-Temperature Health Monitoring
Grain Boundary Engineering to Improve Austenitic Stainless Steels Stress Corrosion Cracking Behavior in Boiling Saturated Magnesium Chloride Solutions
Heat-Resistant Nickel Alloy ЖС3ДК-ВІ Modification with Titanium Carbonitride Ultrafine Powders
High Temperature Irradiation Resistant Thermocouples for In-Pile Temperature Sensing
High Temperature Thick Film Sensor Development Based on Doped Lanthanum Chromites Refractory Semiconductors Materials
Integrating Multimodal Corrosion with Correlative Microscopy Across Multiple Lengthscales
Investigation of Stress Corrosion Cracking in CMSX-4 Turbine Blade Alloys Using Deep Learning Assisted X-ray Microscopy
Irvingia gabonensis Leaf-Extract Effect on Concrete Steel-Reinforcement Corrosion in Industrial/Microbial Simulating-Environment
Isothermal Oxidation Behavior of Pack-Cementation Coated Three-phase Mo-Nb-Si-B Alloys
JHU/APL’s Science of Extreme and Multifunctional Materials Program: Materials Research with Mission Intent
Modeling of High-efficiency Heat Exchanger Pipe with Twisted Tape Inserts
New Strategies for Designing Colloidal Inks for Additive Manufacturing of UHTCs
Rhenium Free Heat-resistant Monocrystalline Nickel Alloy Development
Root Cause Spectroscopic Failure Investigation Aided by High Resolution SEM/EDS, FT-IR, XPS Instruments
Silica Nanoparticles via Sol Gel Synthesis: A Concise Review on the Expulsion of Heavy Metals from Their Solution
Stress Corrosion Mitigation in Al-Mg via Zn-Rich Primers and Long-Term Performance Stability
The Role of Residual Stress in Crystallographic Orientation Dependent Corrosion Rates of Aluminum
Titanium Coatings on Materials for Harsh Environments and Corrosion in Interaction with the Environment in Coke Production
Understanding Hydration-induced Cracking, Corrosion and Self-healing Mechanisms in Advanced Concrete Using Electron Microscopy and Quantitative Non-destructive 3D Mineral Characterization
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