Oxysulfide dispersion strengthened titanium alloys

Details Oxysulfide dispersion strengthened titanium alloys Oxysulfide dispersion strengthened titanium alloys

1985-02-15

1986-03-25

O'Keefe, Veronica

Metal treatment

Stock

Age or precipitation hardened or strengthened

75951, 420417, 420419, C22C 1400, C22C 118

Patent

active

045781290

ABSTRACT:
A titanium alloy base composition is prepared to contain a finely divided dispersoid of a compound which is stable in the alloy at elevated temperatures. The compound is of a metal and non-metal. The non-metal may be sulfide, oxysulfide or a combination of sulfide and oxysulfide. The compound metal may be at least one metal selected from the group comprising calcium, strontium and a rare earth metal selected from the group consisting of those rare earth metals having a chemical stability greater than that of the corresponding compound of yttrium.

REFERENCES:
patent: 3622406 (1971-11-01), Vordahl
patent: 4512826 (1985-04-01), Whang
Sastry et al, "Structure and Properties of Rapidly Solidified Dispersion-Strengthened Titanium Alloys: Part 1, Characterization of Dispersoid Distribution, Structure and Chemistry", Metallurgical Transactions A, vol. 15A, Jul. 1984, pp. 1451-1463.

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