Wear resistant cast iron

摘要

A casting of a white cast iron alloy which includes the following alloy composition, in weight %:
chromium: 12-25%;carbon: 1.5-6%;manganese: 2-7%;silicon: up to 1.5%;molybdenum: up to 2;nickel: up to 4%;microalloying elements selected from the group of titanium, zirconium, niobium, boron, vanadium, and tungsten: up to 2% of each of one or more of the elements; andiron: balance.

The microstructure of the casting has 15-60 vol % eutectic carbides and primary carbides dispersed in a ferrous matrix of martensite and is at least substantially free of pearlite.

主权项

1. A casting of a white cast iron alloy that comprises:
20 to 23 wt. % chromium; 3.3 to 6 wt. % carbon; greater than 4 up to 7 wt. % manganese; up to 1.5 wt. % silicon; and the balance iron; andhaving a microstructure comprising martensite, retained austenite and less than 2 vol. % pearlite and includes M7C3 carbides, where “M” is a metal and “C” is carbon.