Method for refining microstructures of cast titanium articles

Details Method for refining microstructures of cast titanium articles Method for refining microstructures of cast titanium articles

1984-01-27

1984-11-13

Stallard, W.

Metal treatment

Compositions

Heat treating

148 127B, 148133, 148158, 148421, C22F 118

Patent

active

044823983

ABSTRACT:
The microstructure of titanium alloy castings is improved by a process which comprises beta-solution heat treating the cast article at or near the beta-transus temperature of the alloy, cooling the article to room temperature at a rate in excess of air cooling and aging the article at a temperature about 0.8 to 0.9 of the beta-transus.

REFERENCES:
patent: 2974076 (1961-03-01), Vordahl
patent: 3340051 (1967-09-01), Evans et al.
patent: 3649374 (1972-03-01), Chalk
patent: 3901743 (1975-08-01), Sprague et al.
patent: 4167427 (1979-09-01), Veda et al.
D. Eylon, F. H. Froes, R. W. Gardiner, "Developments in Titanium Alloy Casting Technology", Journal of Metals, vol. 35, No. 2, Feb. 1983, pp. 35-47.
F. C. Teifke, N. H. Marshal, D. Eylon, F. H. Froes, "Advanced Processing Methods for Titanium", Conf. Proceedings, The Metellurgical Society of AIME, Oct. 13-15, 1981.

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