Method for increasing electrical conductivity of ultra-high-strength aluminium alloy

The invention relates to a method for increasing the electrical conductivity of an ultra-high-strength aluminium alloy material. According to the method, atoms deviating from balance positions contract due to the principle of heat expansion and cold contraction and are gradually recovered to balance lattice positions after subzero treatment for a lattice structure distorted after processing, and the coherent scattering degree of the movement of free electrons in the lattice structure are lowered, the electrical resistivity is lowered, and the electrical conductivity is increased. According to the method disclosed by the invention, the electrical conductivity is increased and recovered to a qualified level after the subzero treatment for an ultra-high-strength aluminium alloy part with attenuated electrical conductivity. 本发明涉及种提高超高强铝合金材料电导率的方法，对加工后发生畸变的点阵结构，经深冷处理后，偏离平衡位置的原子因热胀冷缩的原理，发生收缩，逐渐恢复到平衡点阵位置，点阵结构中自由电子运动的相干散射程度下降，电阻率下降，电导率上升。本发明对电导率出现衰减的超高强铝合金零件，通过深冷处理后，电导率得到提高，恢复到合格水平。