Method for consolidation of iron-based alloy powder by cyclic ph

Details Method for consolidation of iron-based alloy powder by cyclic ph Method for consolidation of iron-based alloy powder by cyclic ph

1982-03-15

1985-01-08

Padgett, Ben R.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Heat and pressure simultaneously to effect sintering

419 49, 419 50, 419 51, 419 54, 419 15, 419 17, B22F 316, B22F 314

Patent

active

044926715

ABSTRACT:
A powder metallurgical method of consolidating iron-based alloy powder, particularly white cast iron, to form a body of high density in which the powder is thermally cycled above and below the alpha-gamma transformation temperature of below 800.degree. C., and a stress of between 1.7 MPa and 34.5 MPa is simultaneously applied to the powder to form a high density consolidated body.

REFERENCES:
patent: 2637671 (1953-05-01), Pavitt
patent: 2807542 (1957-09-01), Frank
patent: 3772009 (1973-11-01), Isaksson
Kohara; "Effect of Repeated Allotropic Transformation on Sintering of Iron Powder"; Metall. Trans.; 1976; vol. 7; p. 1239.
Oshida; "An Application of Superplasticity to Powder Metallurgy"; J. Jpn. Soc. Powder and Powder Metallurgy, 1975, vol. 22, p. 147.

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