TITANIUM ALLOY FOR POWER FASTENING ELEMENTS Russian patent published in 2010 - IPC C22C14/00 

FIELD: metallurgy.

SUBSTANCE: invention refers to metallurgy, particularly to titanium alloys, and is intended for application in nuclear power engineering in production of power fastening elements in flange junctions and sockets of various technological systems of reactor equipment of nuclear and thermonuclear plants. To obtain technology-intensive titanium alloy with improved set of mechanical and operational qualities, titanium alloy containing the following components, wt %, is disclosed: aluminium 2.5-3.5, molybdenum 4.5-5.5, vanadium 4.5-5.0, zirconium 0.1-0.3, iron 0.05-0.25, silicon 0.05-0.15, niobium 0.1-0.3, tungsten 0.03-0.08, nickel 0.05-0.1, cerium 0.003-0.008, carbon 0.03-0.10, oxygen 0.05-0.15, nitrogen 0.01-0.05, hydrogen 0.005-0.010, titanium as the base, with total content of carbon and nitrogen not exceeding 0.12%.

EFFECT: improved performance and operational reliability of power fasteners in flange junctions and sockets of various pressure vessels, pipelines and fittings of reactor equipment.

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