Laser welding stainless steel components by stabilized ferritic stainless steel fusion zone modifiers
US6520432B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2001 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Jun 5, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49432
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A process of laser welding high carbon martensitic stainless steel components and austenitic stainless steel components by a stabilized ferritic stainless steel fusion zone modifier in the weld joint, and articles formed therefrom. The stabilized ferritic stainless steel fusion zone modifier comprises, in terms of weight percentage, from about 10% to about 35% chromium, and at least one element selected from the group consisting of no more than about 1.5% titanium and no more than about 1.5% columbium. The stabilized ferritic stainless steel fusion zone modifier present in the fusion zone inhibits and prevents solidification cracks and micro-fissures from forming in the weld joint, and assists immunity to environmental degradation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.