| 摘要 |
FIELD: plastic working of metals, namely manufacture of thin sheets of high strength titanium alloys by pack rolling process. ^ SUBSTANCE: method comprises steps of heating billets before first rolling stage until temperature exceeding by 50 - 150 C temperature of polymorphous conversion; seasoning for 15 - 50 min and quenching by cooling in water; hot rolling of pack in case heated up to 650-750 C initially lengthwise or crosswise relative to direction of rolling initial billet at total deformation degree 61 - 70 %; hot rolling of pack in case in direction normal relative to direction of first rolling of pack at the same temperature-deformation parameters; subjecting case to annealing. Invention allows to make sheets with ultra-fine grain structure suitable for super-plastic deformation at temperature lower than 800 C. ^ EFFECT: enhanced strength of material during super-plastic forming process, lowered power consumption. ^ 2 dwg, 1 tbl, 2 ex |
