The structure and properties of cold-rolled strips with a thickness of 3 mm from an experimental aluminum alloy 1580 with a lower scandium content of 0.03% (wt.) relative to the grade of the aluminum alloy and a 5083 similar alloy without scandium were studied. Ingots obtained at the laboratory installation of semicontinuous casting of the foundry department of the Siberian Federal University (Siberian Federal University, Russia, Krasnoyarsk) were used. The preparation of ingots for rolling included milling up to sizes of 40 × 100 × 145 mm and annealing according to a two-stage mode: at a temperature of 350 °C for 3 h (first stage) and at a temperature of 425 °C for 4 h (second stage). Hot rolling was carried out in the laboratory of the Department of Metal Forming at the Siberian Federal University at a temperature of 450 °C on a two-roll hot rolling mill with a roll diameter of 330 mm and a barrel length of 520 mm to a thickness of 5 mm, which corresponded to a total reduction of 88% with a single reduction of 2–5%. For cold rolling, a two-roll sheet rolling mill with a roll diameter of 200 mm and a barrel length of 400 mm grade LS 400 AUTO was used. Rolling was carried out to a thickness of 3 mm with a single reduction of 2–5%, and then the strip was annealed. The results of determining the mechanical properties by tension by the universal LFM400 machine showed that with an increase in the annealing temperature in the range from 250 to 350 °C for 3 h, ultimate tensile strength of the cold-rolled strips of aluminum alloy 1580 decreases from 385 to 365 MPa. For aluminum alloy 5083, a decrease in this strength characteristic is also observed from 345 to 320 MPa. A decreasing tendency with increasing annealing temperature was also observed for the conditional yield strength R_p, and over the entire range of annealing temperatures, the values ​​of R_p for strips of alloy 1580 were higher than for alloy 5083 by 35–40 MPa, which amounted to 14–17% The values ​​of the plastic properties, for which the value of the elongation to failure was analyzed, were close throughout the range of annealing temperatures for both alloys. The results of the analysis of micro- and fine structure allowed to conclude that an increase in the strength properties of cold-rolled and annealed sheets from the experimental alloy 1580, compared with alloy 5083, is a consequence of the addition of scandium in the experimental alloy 1580, which leads to an increase in the temperature of recrystallization of the alloy, preserving it contains a subgrain structure and dispersion hardening caused by precipitation of Al₃(Sc, Zr) phase particles during the decomposition of a solid solution.

研究了由实验铝合金1580制成的厚度为3 mm的冷轧钢带的结构和性能，该铝合金的scan含量相对于铝合金和5083类似合金（不含scan）的品位较低，为0.03％（wt。） 。使用在西伯利亚联邦大学（俄罗斯西伯利亚联邦大学）铸造部门的半连续铸造实验室安装获得的铸锭。轧制锭的制备包括铣削至40×100×145 mm的尺寸，并按照两阶段模式进行退火：在350°C的温度下进行3小时（第一阶段），在425°C的温度下进行退火持续4小时（第二阶段）。热轧是在西伯利亚联邦大学金属成形系的实验室中，在温度为450°C的两辊热轧机上进行的，辊径为330 mm，料筒长度为520 mm。厚度为5毫米，相当于减少了88％，而减少了2％至5％。对于冷轧，使用辊直径为200 mm，桶长为400 mm的LS 400 AUTO级两辊薄板轧机。轧制至3mm的厚度，一次压下2-5％，然后对带材进行退火。通过通用LFM400机器通过张力确定机械性能的结果表明，随着退火温度从250到350°C持续3 h的升高，1580铝合金冷轧带材的极限抗拉强度从385 MPa降低到365 MPa。对于铝合金5083，该强度特性也从345MPa降低到320MPa。还观察到条件屈服强度随退火温度升高而降低的趋势R _p，在整个退火温度范围内，R _p的值1580合金带材比5083合金带材高35-40 MPa，达14-17％。在整个范围内，塑性性能值（分析其断裂伸长率的值）接近两种合金的退火温度。微观和精细组织的分析结果可以得出结论，与5083合金相比，与15508合金相比，由1580合金制成的冷轧和退火板的强度性能有所提高。合金1580会导致合金的重结晶温度升高，并保持其亚晶结构和固溶体分解过程中由于Al ₃（Sc，Zr）相颗粒的沉淀而引起的分散硬化。