Cost-Effective Powder Metallurgy TiAl-Based Components For Aerospace Use, Phase I

Metadata Updated: May 2, 2019

Gamma titanium aluminide (TiAl) alloys with their low density (~3.9g/cm3), good elevated temperature strength, stiffness, creep resistance and acceptable burn and oxidation resistance have excellent potential for use in high temperature aerospace applications at temperatures between 500oC to 1000oC instead of the currently used high density (~8.9g/cm3) Ni-based superalloys. However, its poor intermediate and room temperature ductility cause conventional manufacturing operations such as rolling, forging or drawing to be difficult for titanium aluminides, thus leading to very high cost of TiAl components (currently up to $10,000 per 30? by 12? by 0.04? sheet from an offshore source, Plansee in Austria). In the proposed program cost-effective flat products (sheet/foil) and NNS ?chunky? components of monolithic TiAl and composites concepts (TiAl/Ti high-temp alloy/TiAl, TiAl/Ti3Al/TiAl, and TiAl/ceramic concepts) will be fabricated by a patented loose sintering approach. This low cost approach, which allows flexibility in gauge product, a hot pressing approach, microstructure and mechanical properties of the products as well as formability and joining/diffusion bonding capabilities will be evaluated with the goal of achieving the requirements for structural use. These components can be used in next generation launch vehicle airframe (experiencing extensive aerodynamic heating) and engine applications.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_5286
Maintainer Email
Public Access Level public
Bureau Code 026:00
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Datagov Dedupe Retained 20190501230127
Harvest Object Id 005ea67d-6098-4e53-97f1-0a82354dec28
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2004-07-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 2968e7e831df49550ab2ce29f1d3d0d173c3671b
Source Schema Version 1.1

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