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Cost Effective Superalloy for Advanced Modern Engine

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New aircraft superalloy

An EU team compared one aircraft engine alloy against a new potential replacement. Tests confirmed AD730® as an effective replacement, having similar properties but being easier to make.

Industrial Technologies

Europe's move towards greener aviation requires new, more efficient engines that need high-performance alloys. The obvious candidate is the U720Li alloy, but the metal is costly to produce. The EU-funded CESAME (Cost effective superalloy for advanced modern engine) project considered the AD730® alloy as an alternative. Developed by a European company, AD730® has superior strength and heat-performance capabilities while being simpler and cheaper to manufacture. The project's research team compared the two alloys and demonstrated the capabilities of AD730®. CESAME manufactured 2 sets of 10 aircraft engine parts, 1 set from each alloy. Mechanical and ultrasonic testing results showed that AD730® performance was generally similar and in some cases superior to U720Li. In particular, the study demonstrated that manufacturing AD730® does not require isothermal presses, allows more scraps recycling, and that larger ingots can be used. The team concluded that AD730® is an effective substitute. CESAME qualified the new alloy for aviation use. This development will help European businesses to compete internationally and aid the transition to greener aviation.

Keywords

Superalloy, aircraft engine, AD730®, greener aviation, CESAME

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