..., casting resulting in improvements in thermal efficiency, durability, and performance of engines. The USN shipboard environment (the 1. INTRODUCTION marine environment) is high in salt laden air and water, coupled Marine gas turbines in the U.S. Navy have had a long with air and fuel sulfur species...

... 25 11 2008 IN 939 alloy, developed by the International Nickel Co. in the late 1960s, is a unique 22% Cr hot corrosion resistant γ′ strengthened, cast nickel-base superalloy. It is widely used in industrial gas turbines for equiaxed vanes, vane segments and burner nozzles...