Method for producing alpha titanium alloy pm articles

Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Controlled cooling after sintering

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419 48, 419 49, 75245, B22F 100

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active

049312537

ABSTRACT:
A method for producing a titanium alloy powder metallurgy article having high resistance to loading and creep at high temperature is described and comprises the steps of simultaneously pressing a preselected quantity of titanium alloy powder at from 15 to 60 ksi and heating the powder to a temperature just below the beta transus temperature of the alloy to promote beta to alpha phase transformation in the alloy, and then slowly cooling the compacted powder under pressure.

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patent: 4534808 (1985-08-01), Eylon et al.
patent: 4536234 (1985-08-01), Eylon et al.
patent: 4564501 (1986-01-01), Goldstein
patent: 4714587 (1987-02-01), Eylon et al.
patent: 4810289 (1989-03-01), Hoyer et al.
"Status of Titanium Powder Metallurgy", by Eylon et al., in Industrial Apcations of Titanium and Zirconium: Third Conference, ASTM STP 830, 48-65 (1984).
"Developments in Titanium Powder Metallurgy", Froes et al., J. Metals 32:2, 47-54 (Feb. 1980).
"Powder Metallurgy of Light Metal Alloys for Demanding Applications", Froes et al., J. Metals 36:1, 14-28 (Jan. 1984).
"HIP Compaction of Titanium Alloy Powders at High Pressure and Low Temperature", Eylon et al. (Metal Powder Report 41:4 (Apr. 1986)).

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