| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to metallurgy, particularly, to forming semis from titanium alloy BT6 and may be used in machine building, aircraft engineering and medicine. Proposed method comprises annealing at 850°C with holding for an hour in furnace to create globular (?+?)-structure and multipass rolling combined with affecting semis to pulsed electric current with density of 50-200 A/mm, frequency of 830-1000 Hz, pulse duration of 100-120 ms to ensure total true strain degree of e>1 and to form nanocrystalline structure in semi. Note that, after every pass, semi is water cooled. Higher forming capacity of alloy is provided for.EFFECT: higher strength at optimum ductility.5 cl, 1 dwg, 1 tbl, 1 ex |
