METHOD OF HEAT TREATMENT OF TITANIUM ALLOYS Russian patent published in 1995 - IPC

Abstract RU 2033470 C1

FIELD: heat treatment of high-loaded items made of (α) titanium alloys, for example, resilient members. SUBSTANCE: two-stage heat treatment is performed at temperatures that are considerably lower than the temperature of polymorphic transformation (b). The offered heat treatment provides for a cyclic endurance of springs of at least 2·10⁶ cycles which can be explained by absence of a surface gas-saturated layer that is not formed at temperatures within 260 to 280 C (the first ageing stage) and within 500 to 525 C ( the second ageing stage). EFFECT: facilitated procedure. 1 dwg, 2 tbl

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RU 2 033 470 C1

Authors

Belogur V.P.

Vitorskij Ja.M.

Smirnova A.G.

Dates

1995-04-20—Published

1991-12-11—Filed