About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
Presentation Title |
Hydrogen Interactions and Transport in Additively Manufactured Structural Alloys: Implications for Stress Corrosion Cracking and Hydrogen Embrittlement |
Author(s) |
John R. Scully, James T. Burns, Lauren Singer, Zachary D. Harris |
On-Site Speaker (Planned) |
John R. Scully |
Abstract Scope |
As hydrogen plays a pivotal role in environmentally assisted cracking susceptibility, comprehension and characterization of hydrogen-metal interactions in structural alloys is vital in the safe application of these materials in corrosive environments. Hydrogen uptake, diffusion, trapping, and transport behaviors of additively manufactured (AM) metallic alloys such as AERMET 100, 316L stainless steel, and 17-4 PH stainless steel can differ greatly from those of their analogous traditionally manufactured incumbents. Hydrogen-metal interactions are characterized through a combination of electrochemical techniques, such as barnacle cell electrode and hydrogen permeation; as well as hot extraction methods, such as thermal desorption spectroscopy and LECO hydrogen testing. The identification of specific microstructural features functioning as hydrogen traps or fast paths for transport in AM alloys compared to traditionally manufactured alloys is challenging. Progress can provide insight into hydrogen interactions that may affect mechanical properties. The ramifications towards hydrogen embrittlement and stress corrosion cracking are discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Environmental Effects, Mechanical Properties |