Cu对Al-Si-Cu-Ni合金组织和力学性能的影响  

Effects of Cu on Microstructure and Mechanical Properties of Al-Si-Cu-Ni Alloy

作　　者：贾祥磊[1] 陈大辉[1] 朱秀荣[1] 侯立群[1] 彭银江[1] 

机构地区：[1]中国兵器科学研究院宁波分院轻质材料研究所

出　　处：《特种铸造及有色合金》2010年第9期871-873,共3页Special Casting & Nonferrous Alloys

摘　　要：通过力学性能分析、硬度测试、金相观察以及能谱分析等手段,研究了Cu对砂型铸造Al-Si-Cu-Ni合金组织和力学性能的影响。结果表明,随着Cu含量的增加,合金中Al-Ni-Cu相和CuAl2相增加,同时合金的室温、高温(250℃)强度提高,伸长率下降。Effects of Cu on microstructure and mechanical properties of sand casting Al-Si-Cu-Ni alloy were analyzed by tensile testing,hardness testing and OM (optical microscope) and energy spectrum analysis. It is found that with increasing in Cu content,Al-Ni-Cu phase and CuAl2 phase in the alloy are increased,which results in the improvement of tensile strength of the alloy at room temperature and at 250℃ and decrease of elongation of the alloy.

关 键 词：Al—Si—Cu—Ni合金 Al—Ni—Cu相 高温强度 显微组织 

分 类 号：TG146.21[一般工业技术—材料科学与工程]