Heat-treating method

Details Heat-treating method Heat-treating method

1976-10-26

1978-06-20

Stallard, W.

Metal treatment

Compositions

Heat treating

148 115C, C22F 100, C22F 108

Patent

active

040959996

ABSTRACT:
The present invention relates to methods for modifying the temperatures at which metallic compositions capable of undergoing reversible transformation from the austenitic state to the martensitic state will undergo such transformation. According to the present invention, the transformation temperature of such metallic compositions may be raised by slowly heating a metallic composition which is in the martensitic state to a temperature above that at which transformation to the austenitic state normally occurs. Usually the slow heating is terminated and the composition cooled to a temperature below the temperature at which slow heating was terminated.

REFERENCES:
patent: 2394673 (1946-02-01), Edmunds
patent: 3567523 (1971-03-01), Jackson et al.
patent: 3594239 (1971-07-01), Wang
patent: 3783037 (1974-01-01), Brook et al.
Titov, P. et al., Hysterisis in Martensitic Transformation on Alloy of Cu-Sn; Akad. Nauk., UKr.SSr; May 1970; pp. 199-204.
Pops, H.; Martensite in Ternery Cu-Zn Based Beta-Phase Alloys; in Trans. AlME, 239; May 1967; pp. 756-759.

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