Effects of Prior Processing on the Performance of PH 13-8 Mo Stainless Steel

摘要

The purpose of this investigation was to determine the root cause of the differences noted in the fatigue test data of main rotor spindle assembly retaining rods fabricated from three different vendors. ARL performed dimensional verification, and measured the respective surface roughness of the rods in an effort to identify any discrepancies. Next, mechanical testing was performed, followed by metallography, and chemical analysis. Finally, ARL performed laboratory heat treatments at the required aging temperature.