Compositions and methods for determining alloys for thermal spray, weld overlay, thermal spray post processing applications, and castings
US8562760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2010 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Nov 3, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed herein are iron-based alloys having a microstructure comprising a fine-grained ferritic matrix and having a 60+ Rockwell C surface, wherein the ferritic matrix comprises <10 μm Nb and W carbide precipitates. Also disclosed are methods of welding comprising forming a crack free hardbanding weld overlay coating with such an iron-based alloy. Also disclosed are methods of designing an alloy capable of forming a crack free hardbanding weld overlay, the methods comprising the steps of determining an amorphous forming epicenter composition, determining a variant composition having a predetermined change in constituent elements from the amorphous forming epicenter composition, and forming and analyzing an alloy having the variant composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.