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The hot-rolled wire rods of 6056 aluminum alloy were solution treated at 470~600 ℃, water quenched and artificially aged. The effects of different solution temperatures on the mechanical properties, fracture morphology, metallographic and intergranular corrosion resistance of Al-Mg-Si-Cu aluminum alloy were investigated by tensile property test at ambient temperature, intergranular corrosion resistance test, combined with optical microscopy, scanning electron microscopy and energy spectrum analysis. The results show that Mg2Si in the microstructure of 6056 aluminum alloy dissolves more fully into the matrix as the solid solution temperature increases, while the undissolved iron-rich and copper-rich phases do not show significant changes. The tensile strength increases with the increase of solid solution temperature, reaching a peak around 540 ℃. When the solid solution temperature increases to 570 ℃ and 600 ℃, the strength changes slightly, but the elongation first increases and then decreases with the increase of solution temperature. The intergranular corrosion resistance decreases with the increase of solid solution temperature.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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