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公开(公告)号：US10766071B2
公开(公告)日：2020-09-08
申请号：US15896804
申请日：2018-02-14
Inventor： Laszlo J. Kecskes , Kristopher A. Darling , Rajiv S. Mishra , Yuri Mishin , Kiran N. Solanki , Mansa Rajagopalan
IPC: B22F9/00 , B22F9/12 , B22F9/14 , C22C9/00 , B22F9/04 , B22F1/00 , C22C1/04 , B82Y40/00 , B22F3/20 , B82Y30/00
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 nm2 of 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.
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公开(公告)号：US20180229308A1
公开(公告)日：2018-08-16
申请号：US15896804
申请日：2018-02-14
Inventor： Laszlo J. Kecskes , Kristopher A. Darling , Rajiv S. Mishra , Yuri Mishin , Kiran N. Solanki , Mansa Rajagopalan
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 nm2 of 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.
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