Er对Al-18%Si-10%Mg合金组织和性能影响的研究

Effect of Er on Microstructure and Mechanical Properties of Al-18%Si-10%MgAlloy

在Al-18%Si-10%Mg合金中添加不同含量的Er元素,铸造成不同含量Er元素的合金铸锭。分析不同含量Er合金的显微组织、析出相的成分、测定合金的硬度、耐磨性。结果表明：Er可以有效的改善合金组织,有效的提高Al-18%Si-10%Mg合金的力学性能当Er添加量为1.0%时合金的硬度达到143HV,相比未添加Er的Al-18%Si-10%Mg增加了19.6%。有效的提高合金的摩擦性能,添加1.0%Er时,相比未添加Er元素的合金磨损量从3.0mg降到了0.9mg,降低了70%。

Different content of Er element in the Al-18%Si-10%Mg alloy, cast alloy ingot into a different content of Er element. Analysis of different microstructure content Er alloys, precipitation component phase, the alloy was measured hardness, wear resistance. Results show that Er can effectively improve the microstructure, increase effective Si Al - 18% - 18%, the mechanical properties of Mg alloy when Er add 1.0% alloy＇s hardness is 143 hv, compared to not add Er Si Al - 18% - 18% of Mg increased by 19.6%. Effectively improve the friction performance of alloy, adding 1.0% Er, compared to not add Er elements from 3.0 mg to 0.9 mg alloy wear, was reduced by 70%.