Aluminum alloy monofilament and preparation method thereof

The invention provides an aluminum alloy monofilament and a preparation method thereof. The aluminum alloy monofilament comprises Al, Sr, B, Sc, Fe, Si, Cr, Mn, V and Ti, wherein the mass percent of Sr is 0.01 wt%-0.05 wt%, the mass percent of B is 0.01 wt%-0.03 wt%, and the mass percent of Sc is 0.01 wt%-0.05 wt%, a proper amount of the Sr element, the B element and the Sc element are added, the conductivity of the aluminum alloy monofilament can be remarkably improved, and the strength and the heat resistance of the aluminum alloy monofilament can be obviously improved; and in addition, the element Sr is also beneficial to reducing the homogenization time of a cast ingot, reducing the size of primary silicon particles and improving the tensile strength, the ductility and other mechanical properties of the aluminum alloy monofilament. In conclusion, the aluminum alloy monofilament has excellent conductivity, excellent heat resistance and an excellent mechanical property. 本发明提供一种铝合金单丝及其制备方法，铝合金单丝的组成成分包括Al、Sr、