Metallic material having ultra-fine grain structure and method for its manufacture
US5080727A · kind A · utility
64Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1989 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Dec 5, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S72/709
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing a metallic material having an ultra-fine microstructure, the metallic material exhibiting a phase transformation of a low-temperature phase into a high-temperature phase is disclosed, the method comprising the steps of: PA0 preparing a metallic material which comprises at least a low-temperature phase; PA0 applying plastic deformation to the metallic material; and PA0 increasing the temperature of the metallic material to a point beyond a transformation point while applying the plastic deformation to effect reverse transformation of the low-temperature phase into a high-temperature phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.