Scandium-aluminum alloy powder for additive manufacturing and preparation method of scandium-aluminum alloy powder

The invention relates to the field of alloy materials, in particular to scandium-aluminum alloy powder for additive manufacturing and a preparation method thereof.The scandium-aluminum alloy powder comprises scandium-aluminum prefabricated alloy powder and aluminum powder, and the scandium-aluminum prefabricated alloy powder comprises, by mass, 5%-6.5% of Cu, 4.8%-5.2% of Mg, 0.02%-0.08% of Zr, 0.3%-0.6% of Si, 1.2%-1.5% of Sc, 0.1%-0.2% of Y and the balance Al. The use performance is good. 本发明涉及合金材料领域，具体为一种用于增材制造的钪铝合金粉末及其制备方法，包括钪铝预制合金粉末和铝粉，所述钪铝预制合金粉末各成分及质量百分比为：Cu 5~6.5%、Mg 4.8~5.2%、Zr 0.02~0.08%、Si 0.3~0.6%、Sc 1.2~1.5%、Y 0.1~0.2%、余量为Al，本发明所制备的钪铝合金粉末SLM成型件力学性能良好，具有良好的使用性能。