Austenitic iron-based alloy
AssigneeTRW Automotive U.S. LLC
InventorVictor D. Levin
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Abstract
The method of forming hard facing on an engine valve comprising providing an engine valve, providing an austenitic iron-based alloy, the austenitic iron-based alloy including, by weight, about 0.25% to about 0.9% carbon, about 1.5% to about 3.5% boron, about 1% to about 2% silicon, at least 20% chromium, an amount of manganese effective to provide the iron-based alloy with an austenitic structure, and the balance including iron and incidental impurities, and welding the austenitic iron-based alloy to at least a portion of the engine valve.
Claims5
A method of forming hard facing on an engine valve, the method comprising:
- providing an engine valve;
- providing an austenitic iron-based alloy, the austenitic iron-based alloy including, by weight, about 0.25% to about 0.9% carbon, about 1.5% to about 3.5% boron, about 1% to about 2% silicon, at least 20% chromium, an amount of manganese effective to provide the iron-based alloy with an austenitic structure, and the balance including iron and incidental impurities;
- and
- welding the austenitic iron-based alloy to at least a portion of the engine valve.
The method of 1, the austenitic iron-based alloy comprising about 18 wt % to about 30 wt. % of manganese and the chromium comprising 20 wt. % to about 35 wt. % of the austenitic iron-based alloy.
Dependencies are inferred from the claim text.