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US 4,906,436 AGranted
High strength oxidation resistant alpha titanium alloy
AssigneeGeneral Electric Company
InventorsFrancis X. Gigliotti, Jr., Raymond G. Rowe, Gerald E. Wasielewski, deceased
Life of this patent
Estimating the term…
Abstract
Alpha titanium alloys containing aluminum, hafnium and/or tantalum has been found to have improved creep and tensile strengths as well as oxidation resistance at temperature up to about 700.degree. C. without embrittlement.
Claims6
A titanium base alloy consisting essentially of the following ingredients in atom percent:
- ______________________________________ Ingredient Concentration Ingredient From To ______________________________________ Titanium balance Aluminum 11 15 Tin 0 2 Hafnium 0.5 3 Tantalum 0 1.5 Zirconium 0 2 Niobium 0 1 At least one metal selected from the group consisting of molybdenum, tungsten and rhenium 0 1 At least one metal selected from the group consisting of scandium, yttrium, and some rare earth metals and their mixtures 0 1.3 Silicon 0.1 0.8. ______________________________________
A titanium base alloy having the following ingredients in atom percent:
- ______________________________________ Ingredient Concentration Ingredient From To ______________________________________ Titanium balance Aluminum 9 11 Tin 1.1 2.1 Hafnium 0.2 1.2 Tantalum 0 0.5 Zirconium 1 2 Niobium 0 1 Molybdenum 0 0.5 At least one metal 0.1 1 selected from the group consisting of scandium, yttrium and rare earth metals and their mixtures Silicon 0 1. ______________________________________
A titanium base alloy having the following ingredients in atom percent:
- ______________________________________ Ingredient Concentration Ingredient From To ______________________________________ Titanium balance Aluminum 13 15 Tin 0.5 1.8 Hafnium 1 2 Tantalum 0.5 1.5 Zirconium 0 0.5 Niobium 0 0.5 At least one metal 0 0.5 selected from the group consisting of molybdenum, tungsten and rhenium At least one metal 0.1 1 selected from the group consisting of scandium, yttrium and rare earth metals and their mixtures Silicon 0 1. ______________________________________
Dependencies are inferred from the claim text.