Grain size control of metallic materials by inert gas doping
US5407634A · kind A · utility
1Cited by
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6Claims
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Key dates
| Filing date | Jan 11, 1994 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Jan 11, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S75/95
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of inhibiting grain growth and restricting grain size during heat-treatment and hot-working of metallic materials. A small volume of inert gas is added to a metallic material so that the inert gas is dispersed throughout the metallic material. The metallic material is then heated sufficiently high so that the inert gas forms micropores within the metallic material; the micropores interact with grain boundaries to inhibit grain growth. If desired, all or part of the residual microporosity may be eliminated from the metallic material during the final step of a deformation processing cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.