NDLI: Superalloy resources: supply and availability

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Superalloy resources: supply and availability

Content Provider	NASA Technical Reports Server (NTRS)
Author	Stephens, Joseph R.
Copyright Year	1987
Description	Over the past several decades there have been shortages of strategic materials because of our near total import dependence on such metals as chromium, cobalt, and tantalum. In response to the continued vulnerability of U.S. superalloy producers to disruptions in resource supplies, NASA has undertaken a program to address alternatives to the super-alloys containing significant quantities of the strategic materials such as chromium, cobalt, niobium, and tantalum. The research program called Conservation of Strategic Aerospace Materials (COSAM) focuses on substitution, processing, and alternate materials to achieve its goals. In addition to NASA Lewis Research Center, universities and industry play an important role in the COSAM Program. This paper defines what is meant by strategic materials in the aerospace community, presents a strategic materials index, and reviews the resource supply and availability picture from the U.S. point of view. In addition, research results from the COSAM Program are highlighted and future directions for the use of low strategic material alloys or alternate materials are discussed.
File Size	7278012
Page Count	48
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870011644
Archival Resource Key	ark:/13960/t8rc1z16x
Language	English
Publisher Date	1987-04-01
Access Restriction	Open
Subject Keyword	Metallic Materials Tantalum Stockpiling Heat Resistant Alloys Strategic Materials Intermetallics Chromium Nasa Space Programs Cobalt Niobium Aerospace Industry Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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