The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2010
Filed:
Jan. 18, 2007
Wayne E Voice, Nottingham, GB;
Dawei HU, Birmingham, GB;
Xinhua Wu, Birmingham, GB;
Michael Loretto, Birmingham, GB;
Wayne E Voice, Nottingham, GB;
Dawei Hu, Birmingham, GB;
Xinhua Wu, Birmingham, GB;
Michael Loretto, Birmingham, GB;
Rolls-Royce plc, London, GB;
Abstract
A gamma titanium aluminide alloy consisting of 46 at % aluminium, 8 at % tantalum and the balance titanium plus incidental impurities has an alpha transus temperature Tbetween 1310° C. and 1320° C. The gamma titanium aluminide alloy was heated to a temperature T=1330° C. and was held at T=1330° C. for 1 hour or longer. The gamma titanium aluminide alloy was air cooled to ambient temperature to allow the massive transformation to go to completion. The gamma titanium aluminide alloy was heated to a temperature T=1250° C. to 1290° C. and was held at Tfor 4 hours. The gamma titanium aluminide alloy was air cooled to ambient temperature. The gamma titanium aluminide alloy has a fine duplex microstructure comprising differently orientated alpha plates in a massively transformed gamma matrix. The heat treatment reduces quenching stresses and allows larger castings to be grain refined.