Metal treatment – Stock – Age or precipitation hardened or strengthened
Patent
1995-01-17
1997-12-02
Simmons, David A.
Metal treatment
Stock
Age or precipitation hardened or strengthened
148423, 420429, C22C 2704
Patent
active
056931565
ABSTRACT:
Molybdenum alloys are provided with enhanced oxidation resistance. The alloys are prepared by the addition of silicon and boron in amounts defined by the area of a ternary system phase diagram bounded by the points Mo-1.0% Si-0.5% B, Mo-1.0% Si-4.0% B, Mo-4.5% Si-0.5% B, and Mo-4.5% Si-4.0 B. The resultant alloys have mechanical properties similar to other high temperature molybdenum alloys while possessing a greatly enhanced resistance to oxidation at high temperature. The alloys are composed of a matrix of body centered cubic molybdenum surrounding discrete intermetallic phases. A variety of alloying elements are added to the base composition to modify the alloy properties.
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J.A. Shields, Jr., Molybdenum and Its Alloys, Advanced Materials & Processes, Oct., 1992.
Phipps Margery S.
Simmons David A.
United Technologies Corporation
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