Sikorsky Aircraft Corporation

Jonathan Buckley

Bruce D Hansen

A method of carburizing a steel component having a composition of Fe-16.3Co-7.5Ni-3.5Cr-1.75Mo-0.2W-0.11C-0.03Ti-0.02V includes generating a low pressure vacuum in a carburization furnace having the steel component therein, heating the steel component to an optimal carburization temperature while in the low pressure vacuum, performing a boost cycle to introduce carbon rich gas into the carburization furnace while the steel component is at the optimal carburization temperature and in the low pressure vacuum, and performing a diffuse cycle by ceasing introduction of the carbon rich gas into the carburization furnace to allow for diffusion of the carbon into the steel component to occur and while the steel component is at the optimal carburization temperature and in the low pressure vacuum. The boost cycle and the diffuse cycle are repeated to achieve a carbon content at a surface of the steel component of between 0.40 wt. % and 0.55 wt. %.

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Stratford, CT, United States of America

Jonathan Buckley