Alloys for hardbanding weld overlays
US8647449B2 · kind B2 · utility
23Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2012 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | May 7, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/1068
- 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 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 families of alloys capable of forming crack-free weld overlays after multiple welding passes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.