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:
Sep. 08, 2020
Filed:
Feb. 14, 2018
U.s. Army Research Laboratory Attn: Rdrl-loc-i, Adelphi, MD (US);
Laszlo J. Kecskes, Havre De Grace, MD (US);
Kristopher A. Darling, Havre De Grace, MD (US);
Rajiv S. Mishra, Denton, TX (US);
Yuri Mishin, Centreville, VA (US);
Kiran N. Solanki, Tempe, AZ (US);
Mansa Rajagopalan, San Ramon, CA (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
Novel metallic systems and methods for their fabrication provide an extreme creep-resistant nano-crystalline metallic material. The material comprises a matrix formed of a solvent metal with crystalline grains having diameters of no more than about 500 nm, and a plurality of dispersed metallic particles formed on the basis of a solute metal in the solvent metal matrix and having diameters of no more than about 200 nm. The particle density along the grain boundary of the matrix is as high as about 2 nmof grain boundary area per particle so as to substantially block grain boundary motion and rotation and limit creep at temperatures above 35% of the melting point of the material.