Wear and corrosion resistant articles made from pm alloyed...

C - Chemistry – Metallurgy – 22 – C

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C22C 29/02 (2006.01) C22C 33/02 (2006.01) C22C 37/06 (2006.01)

Patent

CA 1307136

ABSTRACT A powder-metallurgy alloy article having a good combination of wear resistance and corrosion resistance. The article is fur- ther characterized by an attainable minimum hardness after heat treatment of 6ORC and a martensitic structure. The article is made from prealloyed particles or the composition, in percent by weight, carbon 2.5-5, manganese 0.2-1, phosphorus 0.10 maximum, sulfur 0.10 maximum, silicon 1 maximum, nickel 0.5 maximum, chro- mium 15-30, molybdenum 2-10, vanadium 6-11, nitrogen 0.15 maximum and balance, iron. The article has a fine, uniform distribution of a MC and other carbide phases.

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