Reduced ferrite steel liner
US8691029B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Feb 28, 2011 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Feb 4, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12132
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A steel liner with a case comprising at least 95% martensite, such as substantially 100% martensite, and a core comprising pearlite and discrete ferrite grains decorating former austenite grain boundaries. The ferrite in the liner's core has an average size of less than about 25 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.