| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention refers to heat treatment of high-strength (+)-titanium alloys and can be used in aerospace equipment during manufacture of power parts of structures. Heat treatment method of high-strength (+)-titanium alloys is proposed. Heating is performed over temperature of polymorphic transformation, exposure at that temperature, cooling to temperature of 680-630C at the rate of not less than 18C/min with further exposure during 1-3 h, heating to temperature of 720-780C and exposure at that temperature during 2-3 h, cooling to temperature of 520-480C at the rate of not less than 12C/min. Then, heating is performed to ageing temperature, exposure at that temperature and cooling in the air. Alloys are characterised with high mechanical properties. ^ EFFECT: improving reliability of products of aerospace equipment owing to achieving higher level of mechanical properties. ^ 1 tbl, 4 ex |
