Si对Zn-Al合金性能的影响

Effect of Silicon on Properties of Zn-Al Based Alloys

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。

In this paper effect of silicon on mechanical properties and wear resistance of alloys ZnAl27Cu2Si_x and ZnAl27Mg_0.02Si_x has been investigated. Results show that with silicon increasing the tensile strength, hardness and wear resistance of above mentioned two kinds of alloys increase and plasticity decreases. When the silicon content is 4%, their tensile strength of the ZnAl27Si4Mg_0.02 and the ZnAl_27Si_4Cu_2 alloys respectively are 400 MPa and 367 MPa. When above two kinds of alloys contain 2%-4% silicon, the wear resistance is the best.