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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Environmental Degradation of Additively Manufactured Alloys
Presentation Title Understanding the Anomalous Corrosion Behavior of Additively Manufactured Stainless Steels through Multi-modal Synchrotron Techniques
Author(s) Jason Trelewicz, David Sprouster, Gary Halada, Hanfei Yan, Yong Chu, Eric Dooryhee, Guhaprasanna Manogharan
On-Site Speaker (Planned) Jason Trelewicz
Abstract Scope Additive manufacturing processes produce materials with hierarchical microstructures containing fusion boundaries at the macroscale, irregular grains and grain boundaries at the microscale, and subgrain dislocation structures at the nanoscale. In 316L stainless steels, corrosion performance has been discussed in the context of chemical heterogeneities formed in the presence of these hierarchical microstructures. However, the large variability in reported measurements underscores the need for statistically significant microstructural data, which is often difficult to access via electron microscopy alone. In this presentation, we explore multi-modal synchrotron x-ray techniques for quantifying hierarchical microstructures and their connection to the underlying chemical distribution in 316L stainless steel. Our results show that the dislocation density depends on the printing conditions with implications for the chemical distribution at the nanoscale. Corrosion rates and pit densities are then discussed to build a connection between printing conditions and corrosion performance vis-à-vis microstructural and chemical information from synchrotron measurements.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing (AM) of Steels for Extreme Environments- Opportunities and Challenges
C-10: Localized Corrosion of Selective Laser Melted Stainless Steel 316L
C-9: Contrasting Corrosion and Cracking Behavior of Additively Manufactured and Wrought 17-4PH Stainless Steel
Comparison of Voids Swelling in Additively Manufactured and Cold-worked 316L SSs After Self-ion Irradiations at Elevated Temperatures
Corrosion and Protection (Conversion Coating and Plasma Electrolytic Oxidation) of Ti6Al4V Processed by Powder Bed Fusion – Additive Manufacturing Electrochemical and EIS Study
Corrosion Behavior of 304L Stainless Steel Produced by Laser Powder Bed Fusion
Corrosion Behavior of Newly Developed High Toughness Mixed-phase Steels
Corrosion Properties of Additively Manufactured Duplex Stainless Steel
Cyclic Oxidation Behavior in Air at 950ºC of Hastelloy X Fabricated by Selective Laser or Electron Beam Melting
Effect of Surface Contouring on Corrosion of 6061-RAM2 Produced by Laser-based Powder Bed Fusion Additive Manufacturing
Environmental Effects on the Stress Corrosion Cracking Behavior of an Additively Manufactured Stainless Steel
Examples of and Opportunities for Tailoring Corrosion Behavior of Materials via Additive Manufacturing
High Temperature Air Oxidation Behavior of Haynes 282 Processed by Electron Beam Melting (EBM)
High Temperature Corrosion of Additively Manufactured Inconel 625
High Temperature Oxidation and Phase Transformations in γ-TiAl Produced by Additive Manufacturing
High Temperature Oxidation Behavior of 316L Austenitic Stainless Steel Manufactured by the Selective Laser Melting
High Temperature Oxidation Behavior of Additively Manufactured Inconel 625 Superalloy in Two Directions
Improving the Corrosion Performance of Additively Manufactured 316L via Optimized SLM Processing Parameters
Interaction between Additive Manufacturing Defects, Powder Contamination, and Two Corrosive Environments
Issues in Localized Corrosion of Selective Laser Melted 316L
On the Implication of Strain Localization on the Fatigue Crack Propagation Under Hydrogen Pressure of LBM Inconel 718
Role of Microstructure and Surface Finish on the Corrosion of Selective Laser Melted 304 and 316 Stainless Steel
SCC and IASCC of Printed 316L for Use in the Nuclear Industry
Segregation and Microstructural Factors Affecting the Oxidation Behavior of IN 625 Made by Additive Manufacturing
Stress Corrosion Cracking and Corrosion-fatigue Behavior of Additively Manufactured 17-4PH
Stress Corrosion Cracking Growth Behavior of Additively Manufactured Alloy 800H in High Temperature Water
Stress Corrosion Cracking Susceptibility of Additively Manufactured 2xxx-series Aluminum Alloys Produced by Selective Laser Melting (SLM)
The Effects of Solution Chemistry on the Corrosion Behavior of Cold Sprayed AA7075
Understanding the Anomalous Corrosion Behavior of Additively Manufactured Stainless Steels through Multi-modal Synchrotron Techniques

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