The Science, Technology, and Implementation of TiAl Alloys in Commercial Aircraft Engines

B. P. Bewlay; M. Weimer; T. Kelly; A. Suzuki; P.R. Subramanian

doi:10.1557/opl.2013.44

journal article Jan 01, 2013

The Science, Technology, and Implementation of TiAl Alloys in Commercial Aircraft Engines

B. P. Bewlay M. Weimer T. Kelly A. Suzuki P.R. Subramanian

MRS Proceedings Vol. 1516 pp. 49-58 · Springer Science and Business Media LLC

View at Publisher Save 10.1557/opl.2013.44

Abstract

ABSTRACTThe present article will describe the science and technology of titanium aluminide (TiAl) alloys and the engineering development of TiAl for commercial aircraft engine applications. The GEnxTM engine is the first commercial aircraft engine that is flying titanium aluminide (alloy 4822) blades and it represents a major advance in propulsion efficiency, realizing a 20% reduction in fuel consumption, a 50% reduction in noise, and an 80% reduction in NOx emissions compared with prior engines in its class. The GEnxTM uses the latest materials and design processes to reduce weight, improve performance, and reduce maintenance costs.GE’s TiAl low-pressure turbine blade production status will be discussed along with the history of implementation. In 2006, GE began to explore near net shape casting as an alternative to the initial overstock conventional gravity casting plus machining approach. To date, more than 40,000 TiAl low-pressure turbine blades have been manufactured for the GEnxTM 1B (Boeing 787) and the GEnxTM 2B (Boeing 747-8) applications. The implementation of TiAl in other GE and non-GE engines will also be discussed.

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References

Details

Published: Jan 01, 2013
Vol/Issue: 1516
Pages: 49-58
License: View

Authors

Cite This Article

B. P. Bewlay, M. Weimer, T. Kelly, et al. (2013). The Science, Technology, and Implementation of TiAl Alloys in Commercial Aircraft Engines. MRS Proceedings, 1516, 49-58. https://doi.org/10.1557/opl.2013.44

The Science, Technology, and Implementation of TiAl Alloys in Commercial Aircraft Engines

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