【摘要】 本文介绍使用单一稀土和稀土与去气剂混合物对铅合金(ZL104)处理的两种试验,测定其对铝合金的气孔率、金相组织、铸造性能和机械性能的影响程度。结果表明:(1)稀土能降低铝合金的气孔率;(2)经稀土处理的铝合金其铸造性能和机械性能均高于其他精变剂的处理效果;(3)金相组织细化;(4)找出了使用单一稀土处理铝合金、稀土和去气剂混合物处理铝合金时所获得的理想工艺参数的最佳留存量。更多还原

【Abstract】 The two experiments in which the aluminium alloy(ZL104) was treated with rare earth and its combination with degasifier are reported. The influence of rare earth on gas hole rate, structure, casting properties and mechanical properties were measured. The results show:(1) the gas hole rate is reduced,(2) its casting and mechanical properties are better than those which treated with other refining agent,(3) its crystal structure is getting finer,(4) the best residual amounts of rare earth degasifier are suggested.更多还原