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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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All sourcesNASA NTRSDOE OSTI
DOE OSTI2025

Mechanical Properties of Tritium Precharged and Aged Additively Manufactured Austenitic Stainless Steel

What is “known” about tritium effects on austenitic steel • Decreased ductility and fracture resistance • Hardening/strengthening • Hydrogen is believed to interact with dislocations, grain boundaries, vacancies, and other microstructural features2 • But what about AM?? • Similar behavior/trends? • How do we account for differences between AM and forged? • Can we design based on material with similar microstructure that has already been tested?

Wieber, Natalie [Savannah River National Laborator↗
DOE OSTI2025

Evaluation of powder metallurgy manufactured nanostructured bainitic steel for wind turbine gearbox applications

This project evaluated the feasibility of nanostructured bainitic steel (NBS) for wind turbine gearbox applications. NBS alloys show superior rolling-contact fatigue and wear performance and require only minimal heat-treatment steps to form the desirable microstructure. However, despite the single-step heat treatment, NBS takes longer to form the target microstructure, and the high carbon content of the alloy requires careful processing to avoid cracking.

17 WIND ENERGY↗