Methods of modifying material properties of workpieces using high-pressure-torsion apparatuses
US10907227B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2018 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Jul 24, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2241/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Described is a method of modifying material properties of a workpiece using a high-pressure-torsion apparatus, comprising a working axis, a first anvil, a second anvil, and an annular body, comprising a first recirculating convective chiller, a second recirculating convective chiller, and a heater, positioned between the first recirculating convective chiller and the second recirculating convective chiller along the working axis. The method comprises compressing the workpiece along a central axis of the workpiece and. simultaneously with compressing the workpiece along the central axis, twisting the workpiece about the central axis. The method further comprises. while compressing the workpiece along the central axis and twisting the workpiece about the central axis, translating the annular body along the working, axis of the high-pressure-torsion apparatus, collinear with the central axis of the workpiece, and heating the workpiece with the heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.