Iron-aluminum alloys containing boron which have been processed by rapid solidification process and method
US4405368A · kind A · utility
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8Claims
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Key dates
| Filing date | May 7, 1981 |
| Grant date | Sep 20, 1983 |
| Priority date | — |
| Expiry date | May 7, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12431
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
New iron base alloys containing aluminum and boron are disclosed. The alloys are subjected to a rapid solidification processing (RSP) technique which produces cooling rates between .about.10.sup.5 to 10.sup.7 .degree. C./sec. The as-quenched ribbon or powder, etc consists primarily of a metastable crystalline solid solution phase. The metastable crystalline phases are subjected to suitable heat treatments so as to produce a transformation to a stable multiphase microstructure which includes borides. The heat treated alloy exhibits superior mechanical properties with good corrosion and oxidation resistance.
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