Microstructural refinement of cast metal

Details Microstructural refinement of cast metal Microstructural refinement of cast metal

1984-10-31

1986-11-25

Stallard, Wayland

Metal treatment

Compositions

Heat treating

148 115F, 148 127B, 148 13, 148 131, 148131, 148133, 148 203, 148421, C22F 118

Patent

active

046247149

ABSTRACT:
A method of refining the microstructure of metals which undergo a phase transformation at high temperatures by diffusing a solute material into the metal at a temperature below the normal transformation temperature. The solute induces the phase transformation and removal of the solute at a temperature near the transformation temperature reverses the transformation. These phase transformations refine the microstructure of the metal so treated. The method is particularly useful to Group IVB metals i.e. Zr, Hf and Ti.

REFERENCES:
patent: 2892742 (1959-06-01), Zwicker et al.
patent: 3748194 (1973-07-01), Ruckle et al.
patent: 3758347 (1973-09-01), Stalker
patent: 4040129 (1977-08-01), Steinemann et al.
patent: 4098623 (1978-07-01), Ibaraki et al.
patent: 4167427 (1979-09-01), Ueda et al.
patent: 4219357 (1980-08-01), Yolton et al.
patent: 4482398 (1984-11-01), Eylon et al.
patent: 4505764 (1985-03-01), Smickley et al.
Kelto et al., "Titanium Powder Metallurgy--A Perspective".
Greenspan et al., "Titanium Powder Metallurgy by Decomposition Sintering", Proceedings of the 2nd International Conference, May 2-5, 1972, pp. 365-379.
Kerr et al, "Hydrogen as an Alloying Element in Titanium (Hydrovac)", Titanium '80 Science and Technology, 1980, pp. 2477-2486.
Lederich et al, "Optimum Microstructures for SPF Using Hydrovac", Report MDC Q0753, Sep. 15, 1983, McDonnell Douglas Corp., 76 pages.
Kolachov et al, "The Influence of Hydrogen on Hot Deformability of Titanium Alloys with Different Phase Compositions", Proceedings of the Third International Conference on Titanium, May 18-21, 1976, pp. 1833-1842.
Kolachev, "Hydrogen Embrittlement of Titanium and its Alloys", Proceedings of the Third International Conference of Titanium, May 18-21, 1976, pp. 781-790.
"Hi-Ti Hydrogen Titanium", Constitution of Binary Alloys, pp. 799-802, McGraw Hill (1958).

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