使用B对Ce变质的ZL101合金进行细化处理,研究了B元素加入量对Ce变质的ZL101合金组织和力学性能的影响。结果表明:B元素显著细化合金铸态组织的初生α-Al相,同时对共晶Si相的大小、形貌无毒化作用。考虑到成本因素,B元素的最佳加入量为0.5 wt%。此时,T6态合金的抗拉强度和伸长率分别为239 MPa和6.9%,与未处理合金相比,分别提高了28%和33%。 The effect of B addition on the microstructure and mechanical properties of Ce-degenerated ZL101 alloy was studied by using B to refine Ce-modified ZL101 alloy. The results show that the B element remarkably attenuates the primary α-Al phase of the as-cast alloy and has no toxic effect on the size and morphology of the eutectic Si phase. Taking into account the cost factor, B element is the best amount of 0.5 wt%. At this point, T6 alloy tensile strength and elongation were 239 MPa and 6.9%, respectively, compared with the untreated alloy, respectively, by 28% and 33%.