Microstructure/property studies supporting development of low cost processes for TiAl automotive valves

Conference · Sat Jul 01 00:00:00 EDT 1995

OSTI ID:72473

Jones, P E; Porter, III, W J; Keller, M M; Eylon, D ^[1]

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1. Univ. of Dayton, OH (United States)

Lightweight gamma titanium aluminide automotive valves may significantly improve engine performance and fuel economy. However, low cost mass production processes must be developed to realize these gains. Permanent mold casting processes and low cost heat treatments are being developed to enable commercial introduction of TiAl automotive valves. Microstructural development, tensile, creep, and high cycle fatigue properties of permanent mold Ti-47Al-2Nb-1.75Cr (at%) castings are compared with investment castings of similar size. A recommendation is made to use as-HIP castings for components not designed to damage tolerant criteria. This work was performed as pan of a vertically integrated team effort to transfer aerospace TiAl technology to the automotive market.

• OSTI ID: 72473
• Report Number(s): CONF-941144-; ISBN 1-55899-265-0; TRN: IM9530%%85
• Resource Relation: Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994; Other Information: PBD: 1995; Related Information: Is Part Of High-temperature ordered intermetallic alloys VI: Part 2. Materials Research Society symposium proceedings Volume 364; Horton, J. [ed.] [Oak Ridge National Lab., Oak Ridge, TN (United States)]; Baker, I. [ed.] [Dartmouth College, Hanover, NH (United States)]; Hanada, Shuji [ed.] [Tohoku Univ., Sendai (Japan)]; Noebe, R.D. [ed.] [NASA Lewis Research Center, Cleveland, OH (United States)]; Schwartz, D.S. [ed.] [McDonnell Douglas Aerospace, St. Louis, MO (United States)]; PB: 760 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
33 ADVANCED PROPULSION SYSTEMS
29 ENERGY PLANNING AND POLICY
TITANIUM ALLOYS
FABRICATION
MICROSTRUCTURE
MECHANICAL PROPERTIES
ALUMINIUM ALLOYS
INTERNAL COMBUSTION ENGINES
VALVES
HEAT RESISTING ALLOYS
AUTOMOBILES
AEROSPACE INDUSTRY
TECHNOLOGY TRANSFER
NIOBIUM ALLOYS
CHROMIUM ALLOYS
WEIGHT
INTERMETALLIC COMPOUNDS
HOT PRESSING
CASTING