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:
May. 24, 2022
Filed:
Jan. 31, 2020
United States of America As Represented BY the Administrator of Nasa, Washington, DC (US);
Timothy M. Smith, Cleveland, OH (US);
Robert W. Carter, Cleveland, OH (US);
Abstract
A local phase transformation strengthened nickel-base superalloy includes at least 8.0 wt % eta phase formers; at least 7.0 wt % of chi phase formers; less than 12 wt % chromium; at least 18 wt % cobalt; and aluminum. A ratio of eta phase formers:aluminum is (3.2-3.4):1. The eta phase formers can include titanium, tantalum, hafnium, and niobium. The chi phase formers include tungsten and molybdenum. When the superalloy is subjected to elevated temperatures, these levels of components promote eta and chi phase formation along superlattice stacking faults, thereby resulting in a local phase transformation at the stacking faults, which strengthens the superalloy and inhibits creep deformation.