C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/3
C22C 38/00 (2006.01) C22C 33/02 (2006.01)
Patent
CA 1036389
A B S T R A C T This invention relates to a powder mixture for manufacturing of alloy steel articles having small and few oxide inclusions. The mixture con- sists of a metal powder portion which consists of a mixture of two powders, viz. an atomized prealloyed steel powder and a finely comminuted powder con- taining alloying elements, wherein alloying elements, the oxides of which have a free energy of formation with an absolute value less than 120 kcal/mole O2 (502 kJ/moleO2) at 1000°C substantially are contained in the atomized pre- alloyed powder while all alloying elements, the oxides of which have a free energy of formation with an absolute value exceeding 120 kcal/moleO2 (502 kJ/mole O2) at 1000°C, are completely contained in the finely comminuted powder.
214618
Arbstedt Per G.
Lindskog Per F.
Wastenson Erik G.
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