18% Ni-Mo-Co maraging steel having improved toughness and its me

Details 18% Ni-Mo-Co maraging steel having improved toughness and its me 18% Ni-Mo-Co maraging steel having improved toughness and its me

1976-11-04

1978-07-04

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75214, 75226, B22F 300

Patent

active

040986071

ABSTRACT:
An 18% Ni-Mo-Co maraging steel is processed to substantially increase its toughness (Charpy V-Notch) by heating the alloy in particle form to at least the solution treatment temperature thereof, quenching said alloy particles, compacting, and consolidating the quenched particles at a temperature within the recrystallization range of the alloy to form a consolidated product and aging the consolidated product.

REFERENCES:
patent: 3099041 (1963-07-01), Kaufmann
patent: 3343998 (1967-09-01), Abkowitz
patent: 3810756 (1974-05-01), Koehler
patent: 3834004 (1974-09-01), Ayer
patent: 3975193 (1976-08-01), Nayar
patent: 4011108 (1977-03-01), Hellman et al.
Tracey et al., "Mechanical Properties of Some Maraging Steels", Powder Melurgy, 12 (23) pp. 131-156 (1969).
Fisher; J. J., "Mechanical Properties of Sintered 18% Maraging Steel", Int'l. J. of Powder Metallurgy, 2 (4) pp. 37-42, Oct. 1966.
Pietrocini et al., Int. Journal Powder Metallurgy, vol. 6, #4, Oct. 1970, pp. 19-25.

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