Research/Patents/US 5068084
US 5068084

COLUMNAR GRAIN SUPERALLOY ARTICLES

Assignee

UNITED TECHNOLOGIES CORPORATION, A CORP. OF DE.

Filed

Jan 2, 1986

Granted

Nov 26, 1991

Location

WEST HARTFORD CT US

Abstract

An article exhibiting superior mechical properties and resistance to oxidation corrosion at elevated temperatures as described. The article has particular utility in gas turbine engines and is comprised of a nickel base superalloy consisting essentially of 3-10% Cr, 12.1-16% Co, 1.0-1.9% Mo, 3-10% W, 0-5% Re, 4-7% Al, 0-1.5% Ti, 0-8% Ta, 0.5-3% Hf, 0-2% Cb, 0-1% V, 0.02-0.12% Zr, 0.03-0.2% C, 0.005-0.25% B, 0-0.15% of an oxygen active element such as yttrium, balance essentially nickel. This composition is melted and directionally solidified in columnar grain form to provide useful articles.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Jun 25, 1986

Rescinded

Feb 6, 1991

Duration

4 years, 7 months

Inventor

  • 1ALAN D. CETEL

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records