Iron-based alloy and method for production thereof

Details Iron-based alloy and method for production thereof Iron-based alloy and method for production thereof

2007-01-16

2007-01-16

King, Roy (Department: 1742)

Metal treatment

Stock

Ferrous

C148S612000, C148S324000

Reexamination Certificate

active

10311311

ABSTRACT:
An iron-based alloy comprises 1.5 to 2.5 wt % of C, 0.25 to 4.75 wt % of Ni, and W and V in quantities surrounded by the line L as shown in FIG.1of the attached drawings with a balance of Fe and inevitable impurities. The iron-based alloy is obtained by a first heat treatment for applying a solid solution treatment by rapidly cooling the iron-based alloy from a temperature of an austenite forming temperature or more to consequently obtain a mixed matrix comprising a base matrix of martensite and remaining austenite phases and a non-molten carbide, and a second heat treatment for cooling the iron-based alloy after precipitating an MC type carbide within an eutectoid transformation temperature range to consequently precipitate a low carbon content austenite phase.

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