Al-Si中间合金对Al-Mg-Si系合金组织性能的影响  

Influence of Al-Si Master Alloy on Microstructure and Property of Al-Mg-Si Alloy

作　　者：张建新[1] 高爱华[2] 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作454000 [2]河南理工大学机械与动力工程学院,河南焦作454000

出　　处：《热加工工艺》2011年第3期25-27,共3页Hot Working Technology

基　　金：河南省教育厅自然科学研究计划项目(2008B430010)

摘　　要：研究了Al-Si中间合金对Al-Mg-Si系铝合金组织性能的影响,并分析了Si的作用机理。结果表明:含18%Si的Al-Si中间合金对合金的铸态组织作用效果较好,并能合理改善材料的力学性能;随Al-Si中间合金中Si含量的增加,Al-Mg-Si系合金的耐腐蚀性下降,Si含量高于18%后下降显著;Al-Si中间合金中Si含量的增加,能提高Al-Mg-Si系合金的抗拉强度,Si含量高于20%后其抗拉强度开始下降。The effects of Al-Si master alloy on microstructure and property of Al-Mg-Si system alloy were studied,and the mechanism of Si in influencing the microstructure and property of the alloy was discussed.The results indicate that Al-Si master alloy with 18% Si can refine the microstructure of cast aluminum alloy and improve the mechanical properties.The corrosion resistance of Al-Mg-Si system alloy decreases with the increase of Si content in Al-Si master alloy,the corrosion resistance significantly decreases when more than 18%Si in Al-Si master alloy.The tensile strength of Al-Mg-Si system alloy improves with the increase of Si content in Al-Si master alloy,the tensile strength declines when Si content is above 20 %.

关 键 词：铝合金 Al-Si中间合金 组织 性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]