【摘要】 通过在共晶、过共晶Al-Si合金中加入元素Bi的试验.研究了Bi元素对高硅合金的影响。Bi在Al-Si合金中形成Al-Si-Bi多元合金,具有偏晶转变的结晶特点,由于Bi的物理性能及在Al-Si合金中的不溶性、自润滑性,并以高弥散游离态分布于基体中使Al-Si合金的尺寸稳定性和耐磨性得到较大提高。更多还原

【Abstract】 Adding element Bi to eutectic crystal and hyper-eutectic Al-Si alloy and forming multiple unit Al-Si-Bi alloy, which has crystallization characteristic of monotectic transition. Beacause of the physical properties, the insolubility and self-lubricity of Bi and its spreading in the basal body at the homo-dispersion free state, the dimension stability and the wear resistance of hight silicon Al-Si alloy enhance considerably.更多还原