论文部分内容阅读
采用金相微观分析、扫描电镜、电子能谱分析和X射线衍射分析等手段,研究了超声波处理与无超声波处理的铸造Al-5.0Cu-1.0Fe合金的微观组织,分析了超声波对合金微观组织的影响。结果表明,超声波对合金微观组织有显著影响,当施加超声波时,缩孔、缩松等铸造缺陷明显减少,合金的二次枝晶间距减小;超声波细化合金中的富铁相,针状富Fe相Al7Cu2Fe显著减少,汉字状的富Fe相Al6(CuFe)增多,合金中的θ-Al2Cu相减少。
The microstructure of Al-5.0Cu-1.0Fe alloy cast by ultrasonic wave and ultrasonic wave was investigated by means of metallographic microscopic analysis, scanning electron microscopy, electron spectroscopy and X-ray diffraction analysis. The effects of ultrasonic on microstructure of alloy Impact. The results show that the ultrasonic wave has a significant effect on the microstructure of the alloy. When the ultrasonic wave is applied, the casting defects such as shrinkage cavity and shrinkage obviously decrease and the secondary dendrite spacing decreases. The iron-rich phase and the acicular The Fe-rich phase Al7Cu2Fe is significantly reduced, the Han-shaped Fe-rich phase Al6 (CuFe) increased, the alloy θ-Al2Cu phase decreases.