| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments II
|
| Presentation Title |
Effect of Hydrogen Blended Natural Gas on Additive Manufactured 316L Stainless Steel in Pressure Regulator Environments |
| Author(s) |
Gerardo Gamboa, Ali Babakr, Marcus Young |
| On-Site Speaker (Planned) |
Gerardo Gamboa |
| Abstract Scope |
There is an increasing need to lower greenhouse gas (HGH) effects to reduce pollution. One proposed solution is to blend hydrogen into our natural gas pipelines. However, hydrogen is known to degrade the mechanical properties of many alloys through hydrogen embrittlement (HE). Further, the effect of additive manufacturing (AM) processing on a materials properties and resistance to HE has not been thoroughly investigated. In this study, AM 316L stainless steel tensile bars and solubility specimens were soaked in 100% hydrogen gas and 50% hydrogen-natural gas blend at 10 MPa and 100 MPa for time periods of 5 weeks to 24 weeks. The samples were then allowed to rest and let reversible hydrogen degassing occur over 72 hours, before being mechanically and chemically evaluated. The microstructure of the samples was then examined for changes from uncharged samples by several different characterization methods and compared to previous work of stock 316L. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Environmental Effects |