| 摘要 |
FIELD: metallurgy.SUBSTANCE: aluminium-based alloy with lower density is designed for making deformed semi-finished products, including sheets used in aircraft building. The alloy contains the following components, wt %: magnesium 4.2-5.0; zinc 3,2-3.9; copper 0.4-1.0; scandium 0.17-0.30; zirconium 0.07-0.14; titanium 0.01-0.05; berillium 0.0001-0.005; hydrogen 0.05-0.35 cm/100 g of metal; manganese < 0.25; chrome <0.10; iron <0.30; silicon <0.20; aluminium - balance, with the ratio of magnesium content and zinc content - 1.3. The method for processing of alloy includes homogenisation is carried out at 400-430°C for 6-15 hours, hot deformation - at temperature of 380-430°C, and cold deformation to the final size - at the total extent of hot and cold deformation of less than 80%.EFFECT: alloy has higher strength in combination with lower density.2 cl, 5 tbl |
