John G Short

US Patent:

6743305, Jun 1, 2004

Filed:

Oct 23, 2001

Appl. No.:

10/038223

Inventors:

John William Short - Niskayuna NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

C22C 3842

US Classification:

148326

Abstract:

A stainless steel alloy that exhibits both high strength and toughness as a result of having particular ranges for chemistry, tempering temperatures and grain size. The alloy is a precipitation-hardened martensitic stainless steel with an ultimate tensile strength of at least 1200 MPa, a Charpy impact toughness of greater than 55 J, and a grain size of ASTM 5 or finer. The alloy consists essentially of, by weight, 14. 0 to 16. 0 percent chromium, 6. 0 to 7. 0 percent nickel, 1. 25 to 1. 75 percent copper, 0. 5 to 1. 0 percent molybdenum, 0. 03 to 0. 5 percent carbon, niobium in an amount by weight of ten to twenty times greater than carbon, the balance iron, minor alloying constituents and impurities.

US Patent:

7300708, Nov 27, 2007

Filed:

Mar 16, 2004

Appl. No.:

10/801843

Inventors:

Michael Francis Xavier Gigliotti, Jr. - Scotia NY, US
Canan Uslu Hardwicke - Niskayuna NY, US
Liang Jiang - Guilderland NY, US
John William Short - Niskayuna NY, US
Don Mark Lipkin - Nishayuna NY, US
Jonathan Paul Blank - Mason OH, US
Krishnamurthy Anand - Bangalore, IN

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B32B 15/04
B32B 18/00

US Classification:

428632, 420902, 428615, 428680, 428660, 416241 B

Abstract:

An erosion resistant protective structure for a turbine engine component comprises a shape memory alloy. The shape memory alloy includes nickel-titanium based alloys, indium-titanium based alloys, nickel-aluminum based alloys, nickel-gallium based alloys, copper based alloys, gold-cadmium based alloys, iron-platinum based alloys, iron-palladium based alloys, silver-cadmium based alloys, indium-cadmium based alloys, manganese-copper based alloys, ruthenium-niobium based alloys, ruthenium-tantalum based alloys, titanium based alloys, iron-based alloys, or combinations comprising at least one of the foregoing alloys. Also, disclosed herein are methods for forming the shape memory alloy onto turbine component.