Treatment of alloys

Details Treatment of alloys Treatment of alloys

1975-08-25

1983-12-27

Stallard, W.

Metal treatment

Compositions

Heat treating

148 115C, 148400, C22F 108, C22F 114

Patent

active

RE0314749

ABSTRACT:
A method of making a heat-recoverable article in which an alloy comprising an intermetallic compound, which on cooling transforms into a banded martensite by shear with or without working, deformed after appropriate heat treatment so that on reheating it at least partly resumes its original shape. It is preferred to use a copperbase alloy which transforms into a martensite of pseudocubic symmetry.

REFERENCES:
patent: 3347717 (1967-10-01), Eichelman, Jr. et al.
patent: 3351463 (1967-11-01), Rozner et al.
patent: 3374123 (1968-03-01), Masumoto et al.
patent: 3558369 (1971-01-01), Wang et al.
patent: 3567523 (1971-03-01), Jackson et al.
Suoninen, E. J. et al.; Trans. AIME, Journal of Metals; Feb. 1956, p. 283.
Genevray, A. M.; Martensitic Transformation in Muntz Metal; MIT Thesis; May 1953.
Suoninen, E. J.-Investigation of the Martensitic Transformation in Metastable B Brass, Aug. 1954.
Hornbogen, E. et al; Influences of Stress on the Occurrence of Transformations of the B.sub.1 -B.sup.11 Transformation in Brass; Z. Met.
Christian, J. W. et al.; Intermetallic Compounds Ed. Westbrook; "Crystallographic Transformations"; pp. 428-449; Published, Wiley 1967.
Rothwarf et al.; "Feasibility of Using Memory Metal Effect for Fuse Applications"; Memorandum Report M68-38-1; Dept. of Army, Frankford Arsenal, Philadelphia; Nov. 1968.
Arbuzova, I. A. et al.; Abnormal Elongation and Reduced Resistance to Plastic Deformation due to Martensitic Transformation in Cu-Al-Ni; Fiz. Met. & Metallowed, 17(7) 390; 1964.
Busch et al.; Alloys of Improved Elastic Properties; Report No. AMRA CR-65-02/1; Final Report Part 1; pp. 1, 13, 14, 43-49; Feb. 1966.

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