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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Materials in Clean Power Systems IX: Durability of Materials
Presentation Title M-2: Effect of Mechanical Loading on Galvanic Corrosion Using Electrochemical Characterization Techniques and Depth Profiling
Author(s) Sreekamal Balijepalli, Scott Turnage, Kiran Solanki
On-Site Speaker (Planned) Sreekamal Balijepalli
Abstract Scope Galvanic corrosion is a serious issue for structures subjected to marine environments. Researchers have studied the effects of parameters such as area, equilibrium potential, environment, etc. on galvanic corrosion; however, the effect of mechanical load has not been thoroughly analyzed. Typically, a metallic joint of dissimilar metals is subjected to mechanical loading and, consequently, strain. In order to evaluate the effect of tensile strain, we have compared the rate of corrosion between the unstrained and strained conditions for galvanic couples. The materials tested are Al7075 plate with a CRES 316 or a Ti-6Al-4V bolt. Initially, the couples are compared using corrosion current and Tafel parameters. Later, they are subjected to a corrosive environment, and the depth profile is observed using optical profilometry. Results show that plastic deformation increases the corrosion rate (measured by the change in thickness for a set time); whereas, elastic deformation does not affect the corrosion process.
Proceedings Inclusion? Planned: A print-only volume


Characterization of Titanium Thin-Film Liquid/Gas Diffusion Layer in Clean and Renewable Power Systems
Computational Modeling of Metal Oxidation
Corrosion Behaviour of 9-12Cr Ferritic Steels and 18-25Cr Austenitic Steels in Supercritical CO2
Corrosion of Energy System Materials in Supercritical Carbon Dioxide (sCO2)
Corrosion of Nickel-base Alloys by Supercritical CO2
Corrosion of Supercritical CO2 Turbomachinary Components
Cyclic Behavior and Fatigue Properties for Haynes 282
Development of Creep Resistant High Cr containing FeCrAl Ferritic Alloys for Fossil Energy Applications
Development of HfB2-ZrB2 Based Ceramics as High Temperature Electrode Materials for MHD Direct Power Extraction System
Effect of Temperature and Pressure on Supercritical CO2 Compatibility of Structural Alloys
Electrodeposition of MCrAlY and Pt-Modified MCrAlY Coatings for Gas-Turbine Engine Applications
Evaluation of the Creep-Rupture Behavior of Haynes Alloy 282 for Advanced Ultrasupercritical Boiler Service
Heat Resistant Alloy Development for Fossil Energy Power Generation
High-Temperature Corrosion of Diffusion Bonded Haynes 230 in Supercritical CO2 Cycle Conditions
High Pressure Steam Oxidation of Boiler and Turbine Alloys
High Temperature Corrosion in Molten Salts & Molten Salts Technology: Past, Present and Future
High Temperature Oxidation and Mechanical Properties of Novel Al-containing Fe-based ODS Alloys
Long-term Microstructural Stability in Haynes 282 after High Temperature Exposure
M-1: Effect of High Temperature Cyclic Oxidation on the Deformation of ODS and Cast FeCrAlY Alloys
M-2: Effect of Mechanical Loading on Galvanic Corrosion Using Electrochemical Characterization Techniques and Depth Profiling
M-3: Electrodeposition of Amorphous/Nanocrystalline Ni–Mo Alloy for Hydrogen Evolution Reaction
M-4: Phyllanthus Muellerianus and Triethanolamine Synergistic Effects on Steel-reinforced Concrete in 0.5 M H2SO4: Implication for Clean Corrosion-protection of Wind-energy Structures in Industrial Environment
Materials Issues for Supercritical CO2 above 700C
Mechanical Characterization of Solid Acid Materials for Intermediate Temperature Fuel Cells
Precipitation Dynamics and the Role of Microstructural Changes in the Development of Alumina-Forming Austenitic Stainless Steels
Weldability of Gradient Tubes for High Temperature Application

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