Hr2.zip May 2026

: NASA HR-2 is a specialized superalloy developed to withstand the extreme conditions of liquid rocket engines (LREs). This paper explores its mechanical properties, including high yield stress (~95 ksi) and exceptional ductility in high-pressure hydrogen environments.

: Data confirms that high-pressure hydrogen has minimal influence on the alloy’s fracture elongation (34–36%), demonstrating superior resistance to embrittlement compared to standard alloys. hr2.zip

: Components in hydrogen-sensitive LREs are prone to hydrogen environment embrittlement. HR-2 was formulated as a promising solution for hardware produced via Laser Powder Bed Fusion (L-PBF) , a type of 3D printing that allows for complex geometries. Methodology : : NASA HR-2 is a specialized superalloy developed

: Detailing the laser parameters used to achieve high densification levels. : Components in hydrogen-sensitive LREs are prone to

: Standard procedures used to optimize the microstructure for tensile strength.