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. 21, 2019
Filed:
Jul. 01, 2016
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventor:
Gopal Das, Simsbury, CT (US);
Assignee:
UNITED TECHNOLOGIES CORPORATION, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22F 1/10 (2006.01); B33Y 10/00 (2015.01); B33Y 40/00 (2015.01); B22F 3/105 (2006.01); B22F 3/15 (2006.01); B22F 3/24 (2006.01); C22C 19/05 (2006.01);
U.S. Cl.
CPC ...
C22F 1/10 (2013.01); B22F 3/1055 (2013.01); B22F 3/15 (2013.01); B22F 3/24 (2013.01); B33Y 10/00 (2014.12); B33Y 40/00 (2014.12); C22C 19/055 (2013.01); C22C 19/056 (2013.01);
Abstract
A method of metallurgical processing includes, providing a workpiece that has been formed by additive manufacturing of a nickel-chromium based superalloy. The workpiece has an internal porosity and a microstructure with a columnar grain structure and delta phase. The workpiece is then hot isostatically pressed to reduce the internal porosity and to at least partially retain the columnar grain structure and the delta phase. The workpiece is then heat treated to at least partially retain the columnar grain structure and the delta phase.