Zn 对免热处理铸造铝硅系合金显微组织与力学性能的影响

Effect of Zn on the Microstructure and Mechanical Properties of Al-Si Non-Heat Treatment Alloy

研究了Zn元素含量分别为0.5wt%、1.0wt%、和1.5wt%时,对Al-Si-Mn-Mg免热处理铸造铝合金的显微组织和力学性能影响。通过变质处理,观察到不同的微观组织。结果表明,随着Zn元素含量的提高,合金的抗拉强度及屈服强度增加,伸长率降低。同时发现,随着Zn元素含量的提升,合金的变质效果出现不同程度的下降。

The effects of Zn content of 0.5wt%,1.0wt%,and 1.5wt%on the microstructure and mechanical properties of Al Si Mn Mg heat free cast aluminum alloy were studied.By metamorphism,different microstructures were observed.The results indicate that with the increase of Zn element content,the tensile strength and yield strength of the alloy increase,while the elongation rate decreases.At the same time,it was found that with the increase of Zn element content,the modification effect of the alloy decreased in different degrees.