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High-strength and high-conductivity Al-0.65Mg-0.58Si-0.17Fe alloy wire was prepared by adopting horizontal continuous casting process followed by continuous extrusion and drawing processes, and effects of such processing technique and heat treatment on microstructure, mechanical properties and conductivity of the prepared alloy were investigated. The results show that the processing technique of horizontal continuous casting plus continuous extrusion can improve the solid solubility in supersaturated alloy and lead to significantly grain refinement, and the following drawing process introduces high-dense dislocation, which changes the precipitation behavior of Mg2Si phase during the ageing treatment of the alloy. It is shown that Al-0.65Mg-0.58Si-0.17Fe alloy prepared by the processes of horizontal continuous casting, continuous extrusion and drawing is subjected to 3 hours of aging treatment at 155 ℃, resulting in its tensile strength of 335 MPa, elongation rate of 6.9%, and electrical conductivity of 55.7%IACS.
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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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