改良铸造铝硅合金复合变质处理的研究
Study on Compound Modification of Improved Al-Si Casting Alloy
杨启杰， 苏广才， 王文超
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作者单位：（广西大学 材料科学与工程学院，广西 南宁 530004）
中文关键字：改良； 铸造铝硅合金； 复合变质处理
英文关键字：improvement; Al-Si casting alloy; compound modification treatment
中文摘要：以ZL101为基础，通过添加Cu、Ni、Mn、V和RE等合金元素，研制了改良铸造铝硅合金，并对改良铸造铝硅合金进行了复合变质处理研究。结果表明，复合变质处理对改良铸造铝硅合金是有效的，经复合变质处理后合金的组织表现为单一的α(Al)+共晶Si组织，独立的α(Al)相较少，短共晶Si会聚集长大为长共晶Si，数量较多，强化了α(Al)基体，提高了合金的力学性能。
英文摘要：The modified Al-Si casting alloy was prepared on the basis of ZL101 by adding alloying elements Cu, Ni, Mn, V and RE, and the compound modification of the casting alloy was studied. The results show that the compound modification plays a part in the improvement of the casting alloy; after compound modification, the alloy’s microstructure is single α(Al) + eutectic Si structure. The short eutectic Si gathers, which can generates a lot of long eutectic Si, so α(Al) matrix is reinforced and the mechanical properties of the alloy improves.