FIELD: metallurgy.
SUBSTANCE: cleaning of surfaces of attached items from oxides is performed. An intermediate layer from niobium in the form of foil, a plate or a sputtered layer is installed with further heating in vacuum or a protective atmosphere. First, an item from an alloy based on titanium nickelide is connected only to an interlayer from niobium, heated to the temperature of 1170-1190°C and exposed during 1-15 minutes. Then, the item is cooled and brought into contact with the second item from titanium or its alloys with a side containing a niobium layer. Then, it is heated to the temperature of 850-950°C in the protective atmosphere or vacuum; the pressure of 1-15 MPa is applied, exposed during 5-60 minutes and cooled.
EFFECT: maintaining physical and mechanical properties and a microstructure of combined alloys based on titanium due to reduction of diffusion welding temperature.
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| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DIFFUSION WELDING PARTS MADE OF TITANIUM NICKELIDE-BASED ALLOY | 2012 |
|
RU2504464C1 |
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