Metal treatment – Compositions – Heat treating
Patent
1978-12-04
1981-09-08
Dean, R.
Metal treatment
Compositions
Heat treating
75170, 148 325, C22C 1903
Patent
active
042882591
ABSTRACT:
This disclosure relates to directionally solidified articles produced from a eutectic alloy in the nickel-aluminum-molybdenum system with tantalum added. The articles have a microstructure consisting of a ductile matrix phase of gamma prime containing a fibrous reinforcing second phase of alpha Mo. The nominal composition of the base alloy is 6.9 weight percent aluminum, 15.2 weight percent tantalum, 18.5 weight percent molybdenum, balance nickel. The directionally solidified alloy articles of the invention are characterized by exceptional mechanical properties combined with good oxidation resistance and reasonable sulfidation resistance at elevated temperatures.
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patent: 3793010 (1974-02-01), Lemkey et al.
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Kinsey et al., ASM Transactions, vol. 43, pp. 193-225, 1951.
The Form of the Equilibrium Diagrams of Ni-NiAl-Mo Alloys, Academy of Sciences USSR, 132, May-Jun. 1960, pp. 491-495.
Lemkey Franklin D.
Pearson David D.
Dean R.
Sohl Charles E.
United Technologies Corporation
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