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. 02, 2019
Filed:
Jul. 31, 2012
Agnieszka M. Wusatowska-sarnek, Mansfield Ctr., CT (US);
Ronald S. Mace, Newnan, GA (US);
Harpreet Wasan, Columbus, GA (US);
Ruston M. Moore, Clinton, NY (US);
John M. Wezalis, Ilion, NY (US);
Larry G. Housefield, Portland, CT (US);
Agnieszka M. Wusatowska-Sarnek, Mansfield Ctr., CT (US);
Ronald S. Mace, Newnan, GA (US);
Harpreet Wasan, Columbus, GA (US);
Ruston M. Moore, Clinton, NY (US);
John M. Wezalis, Ilion, NY (US);
Larry G. Housefield, Portland, CT (US);
UNITED TECHNOLOGIES CORPORATION, Farmington, CT (US);
Abstract
A powder metallurgy method includes (a) forming a metallic powder into a shape, (b) thermo-mechanically forming the shape into an article having a polycrystalline microstructure, (c) heat treating the article to cause coarsening of the polycrystalline microstructure, and (d) controlling the grain size homogeneity and distribution in the article formed during coarsening in step (c) by selecting the metallic powder in step (a) to include a metallic powder particle size distribution that is truncated on fine and coarse particle size sides, the selected metallic powder particle size distribution reducing abnormal grain growth such that the polycrystalline microstructure coarsens to a predefined target grain size range.