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研究了一些合金元素对铝 硅合金电导率的影响。硅相减少了铝基体的有效导电截面 ;钛细化晶粒 ,增加晶界面积 ,使得电子波散射增加 ;镁、铜、锰等元素固溶于α铝基体中 ,使晶格畸变造成电子散射几率增加 ,这些均降低合金的电导率。而镁、铜、锰、铁、钛等元素单独作为第二相存在时对铝合金电导率的影响将小得多。通过适当调整成分 ,可以将铝 硅合金的电导率提高 5 %～ 8%。
The effects of some alloying elements on the electrical conductivity of Al-Si alloys were investigated. The silicon phase reduces the effective conductive cross-section of the aluminum matrix; the titanium fines the grains and increases the grain boundary area, resulting in increased electron-wave scattering; elements such as magnesium, copper and manganese are solid-solubilized in the alpha-aluminum matrix causing lattice distortion to cause electron scattering The probability increases, all of which reduce the electrical conductivity of the alloy. However, the presence of magnesium, copper, manganese, iron, titanium and other elements alone as the second phase will have a much smaller effect on the electrical conductivity of the aluminum alloy. By proper adjustment of the composition, the conductivity of aluminum-silicon alloy can be increased by 5% ~ 8%.