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Meeting MS&T22: Materials Science & Technology
Symposium Steels for Sustainable Development
Presentation Title Mechanical Property Alterations through Hydrogen Trapping by Nanocarbide Dispersions in Steels
Author(s) Bahrum Prang Rocky, Shrestha Rakish , Chris San Marchi, Ryan Wilkerson, Chris Weinberger, Steve Daniweicz, Gregory Thompson
On-Site Speaker (Planned) Bahrum Prang Rocky
Abstract Scope A subset of transition metal carbides is identified to trap hydrogen for mitigating hydrogen embrittlement (HE). Using a powder metallurgy process, these carbide nanoparticles are dispersed in 304L stainless steel powder matrices and consolidated by direct current sintering. Tensile test specimens were extracted from the consolidated billets and then subjected to hydrogen gas-phase precharging before testing. The consolidated 304L specimens (with no carbide dispersion) exhibited similar mechanical performance to a wrought 304L sheet in the pre-and post-H-precharged states. With the carbide dispersion additions, up to 1.0 wt.%, the strength increased but with a corresponding decrease in ductility. After hydrogen precharging, all samples exhibited a reduction in ductility from their non-charged state; however, the net ductility loss between the non-charged and H-precharged conditions was reduced with the carbide presence. This talk will address the potential trapping mechanism(s) and optimization strategies in carbide dispersion contents to reduce HE sensitivity in these materials.


Cyclic Deformation and Strain Localization of Ferrite-pearlite Low Alloy Steel under Low-cycle Fatigue
Development of Evaluation Method of Low Alloy Steel in Hydron Environment Using Concurrent Cathodic Hydrogen Charging
Development of Ultra-high Strength TWIP Steel with Increased Corrosion Resistance
Evaluation of Heavy Gauges 690 MPa-class Offshore Steel Racks Required in Modern Wind Turbine Installation Vessels
Exploring the Impact of N Solubility and Trace Elements on the Creep Properties of P92 Steel
F-3: Suitability of 17-4 PH Stainless Steels as Choice Material for Compression Pumps Used in CCS (Carbon Capture And Storage) Systems
Influence of C and N on Hydrogen Embrittlement in 17Cr-10Ni-6Mn Stable Austenitic Stainless Steel
Low-density, Medium-Mn Steels for Lightweighting: Influence of Al content on Microstructure and Tensile Properties
Maximizing Scrap Recycling by Designing Cu Tolerant Steel Compositions
Mechanical Property Alterations through Hydrogen Trapping by Nanocarbide Dispersions in Steels
Microstructural Engineering of High Mn Duplex Steel to Achieve Low-cost, High-performance Solutions for Hydrogen Storage and Delivery
Probing Hydrogen-assisted Phase Transformations in Austenitic Stainless Steels Using Synchrotron X-ray Diffraction
Steel Developments for the Global Energy Transition
The Essence of Mo and Ni Alloying in Steels for Renewable Power Generation
Through Thickness Microstructural Features for Optimum Ductility Performance In High Pressure Gaseous Hydrogen Pipelines

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