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研究了Ｓｉ对ＺｎＡｌ２７Ｃｕ２Ｓｉｘ和ＺｎＡｌ２７Ｍｇ０．０２Ｓｉｘ两类合金力学性能和耐磨性的影响。研究发现，随着Ｓｉ含量的增加，这两类合金的抗拉强度、硬度和耐磨性都提高，而耐塑性下降；含Ｓｉ量在４％左右时，这两类合金的抗拉强度都达到最大值，ＺｎＡｌ２７Ｓｉ４Ｍｇ０．０２和ＺｎＡ２７Ｓｉ４Ｃｕ２合金的抗拉强度分别为４００ＭＰａ和３６７ＭＰａ；当Ｓｉ量为２％～４％时，这两类合金的耐磨性最好。
The effects of Si on the mechanical properties and wear resistance of ZnAl27Cu2Six and ZnAl27Mg0.02Six alloys were studied. It was found that with the increase of Si content, the tensile strength, hardness and wear resistance of both alloys increased, while the ductility decreased. At the Si content of about 4%, the tensile strength of both alloys The tensile strength of the alloys ZnAl27Si4Mg0.02 and ZnA27Si4Cu2 were 400MPa and 367MPa, respectively. When the content of Si was 2% ~ 4%, the wear resistance of the two alloys was the best.