Method for refining microstructures of blended elemental powder

Details Method for refining microstructures of blended elemental powder Method for refining microstructures of blended elemental powder

1984-06-05

1985-08-20

Stallard, Wayland

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148 115P, 148421, 75228, B22F 300

Patent

active

045362343

ABSTRACT:
A method for improving the microstructure of an article made by powder metallurgy of blended elemental titanium powder which comprises beta-solution heat treating the article at a temperature approximately equal to the beta-transus of the equivalent alloy, rapidly cooling the article, annealing the article at a temperature about 10 to 20% below the beta-transus and air cooling to room temperature. The resulting article has a fine alpha plate structure in a matrix of discontinuous beta phase.

REFERENCES:
patent: 3756810 (1973-09-01), Parris et al.
patent: 4087292 (1978-05-01), Neal et al.
patent: 4098623 (1978-07-01), Ibaraki et al.
patent: 4482398 (1984-11-01), Eylon et al.
Froes et al., "Developments in Titanium Powder Metallurgy", in Journal of Metals, vol. 32, No. 2, Feb. 1980, pp. 47-54.
Froes et al., "Powder Metallurgy of Light Metal Alloys for Demanding Applications", in Journal of Metals, Jan. 1984, pp. 14-28.

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