Method for powder metallurgical production of structural parts o

Details Method for powder metallurgical production of structural parts o Method for powder metallurgical production of structural parts o

1985-03-08

1990-04-03

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75246, 419 11, 419 29, 419 53, 419 54, 419 57, 419 58, C22C 2900

Patent

active

049137395

ABSTRACT:
A process for the powder metallurgical production of structural parts of high strength and hardness from silicon-manganese or silicon-manganese-carbon alloyed steels. The alloying elements Si and Mn or Si, Mn and C are mixed, in powder form, by way of the alloy carriers ferrosilicon, ferromanganese or a silicon-manganese-iron master alloy containing silicon and manganese in the ranges from 10 to 30 weight percent Si, 20 to 70 weight percent Mn, remainder Fe, with an iron powder and when carbon is present with graphite, to form a powder mixture. The powder mixture is compressed and sintered at a temperature in a range from 1150.degree. C. to 1250.degree. C. and then cooled.

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Goetzel, Treatise on Powder Metallurgy, vol. 1, pp. 204-207, 1949.
Hoffman et al., "Sintering, Homogenization and Properties of Alpha-Phase Iron-Aluminum and Iron-Silicon Alloys", Powder Metallurgy, 3rd Europ. Powd. Met. Symp., 1971, Conf. Supplement, Pt. 1, pp. 335-361.
Lenel, Powder Metallurgy, Principles and Applications, Chapter 17, "Structural Parts" (1980), pp. 401-423.

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