Using a corrosion proof austenitic iron chromium nickel nitrogen

Details Using a corrosion proof austenitic iron chromium nickel nitrogen Using a corrosion proof austenitic iron chromium nickel nitrogen

1985-02-22

1985-12-17

Stallard, Wayland

Metal treatment

Compositions

Heat treating

148 115R, 148 115N, 148 123, 148 31, 148 38, C21D 602, C21D 702, C22C 3848

Patent

active

045590907

ABSTRACT:
A corrosion proof austenitic alloy is proposed for use in components expected to experience also a high mechanical load; the alloy is to have a high yield strength. The alloy is to have a particular composition which is subjected to a heat treatment, subsequent cold working and recrystallization annealing such that nitrogen solid solution hardening, nitride precipitation hardening and strong grain-refinement synergistically combine to obtain high yield strength values beyond those compared to yield point enhancement calculated by only addition of the three hardening effects separately.

REFERENCES:
patent: 3129120 (1964-04-01), Smith et al.
patent: 3284250 (1966-11-01), Yeo et al.
patent: 4168190 (1979-09-01), Eguchi et al.

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