Metal treatment – Stock – Titanium – zirconium – or hafnium base
Patent
1990-12-21
1992-07-21
Roy, Upendra
Metal treatment
Stock
Titanium, zirconium, or hafnium base
148546, 420418, C22C 1400
Patent
active
051319594
ABSTRACT:
A method for providing improved ductility in a gamma titanium aluminide is taught. The method involves adding inclusions of boron to the titanium aluminide containing chromium and tantalum and thermomechanically working the casting. Boron additions are made in concentrations between 0.5 and 2 atomic percent. Fine grain equiaxed microstructure is found from solidified melt. Property improvements are achieved by the thermomechanical processing.
REFERENCES:
patent: 4897127 (1990-01-01), Huang
patent: 5080860 (1992-01-01), Huang
patent: 5082506 (1992-01-01), Huang
patent: 5082624 (1992-01-01), Huang
Davis Jr. James C.
General Electric Company
Magee Jr. James
Rochford Paul E.
Roy Upendra
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