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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Environmental Degradation of Additively Manufactured Alloys
Presentation Title On the Implication of Strain Localization on the Fatigue Crack Propagation Under Hydrogen Pressure of LBM Inconel 718
Author(s) Abdelali Oudriss, Simon Puydebois, Pierre Bernard, Laurent Briottet, Xavier Feaugas
On-Site Speaker (Planned) Abdelali Oudriss
Abstract Scope This work aims to study the impact of hydrogen on the fatigue behavior of a nickel-base alloy 718 obtained by additive manufacturing. For that purpose, the microstructure was investigated, and fatigue tests were carried out in air, and under 300bar of H2. First, the striation spacing was examined by SEM on the fracture surface. Then, thin samples were extracted using FIB from regions containing striation to question the deformation mode associated to crack propagation with and without hydrogen. The results confirmed that the crack propagation rate is directly associated with the striation distance irrespective of the considered environment. Additionally, TEM observations have highlighted the fact that inter-shear bands spacing is correlated with the striation distance. Thus, the increase of crack growth rate under H2 is a direct effect of hydrogen which increases the dislocations sources number. These results are discussed in relation to the hydrogen embrittlement mechanisms in terms of hydrogen/plasticity interactions.
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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