Ferrochromium alloy and method thereof

Details Ferrochromium alloy and method thereof Ferrochromium alloy and method thereof

1993-02-10

1993-10-12

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148422, 148324, 148611, 148707, C22C 3836, C21D 600

Patent

active

052521494

ABSTRACT:
An erosion and corrosion resistant ferrochromium alloy comprising the following composition, in wt. %, 34-50 chromium, 1.5-2.5 carbon, up to 5 manganese, up to 5 silicon, up to 5 molybdenum, up to 10 nickel, up to 5 copper, up to 1% of each of one or more micro-alloying elements selected from the group consisting of titanium, zirconium, niobium, boron, vanadium and tungsten, and balance, iron and incidental impurities.
The alloy has a microstructure comprising eutectic chromium carbides in a matrix comprising one or more of ferrite, retained austenite and martensite, as herein defined. Optionally, the microstructure further comprises one of primary chromium carbides, primary ferrite or primary austenite in the matrix.

REFERENCES:
patent: 3086858 (1963-04-01), Edminster
patent: 3690956 (1972-09-01), Thompson
patent: 4043842 (1977-08-01), Joiret
patent: 4043844 (1977-08-01), Feltz
Derwent Abstract, Week W1, Class M27, SU 414326 (Dolbenko) Jul. 19, 1974.
Derwent Abstract Accession No. 61284X/32, Class M27, SU 489808 Feb. 4, 1976.

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