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    • Effects of High-intensity Ultrasonic Treatment on Microstructure and Mechanical Properties of Hypereutectic Al-20Si Alloy

    • Yang Jun

      1 ,

      Cheng Hefa

      1 ,

      Huang Xiaomei

      1 ,

      Xiao Zhiling

      1 ,

      Liu Ming

      1
    • Vol. 30, Issue 8, Pages: 769-771(2010)   

      Published: 2010

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  • Yang Jun, Cheng Hefa, Huang Xiaomei, et al. Effects of High-intensity Ultrasonic Treatment on Microstructure and Mechanical Properties of Hypereutectic Al-20Si Alloy. [J]. Special Casting & Nonferrous Alloys 30(8):769-771(2010) DOI:
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    Abstract

    Effects of high-intensity ultrasonic treatment on microstructure and mechanical properties of hypereutectic Al-20Si alloy were investigated. The results reveal that primary Si phase in the Al-20Si alloy can be converted from coarse plate gradually into fine spherical particle with uniform distribution after high intensity ultrasonic treatment,which is responsible for the improvement of tensile strength and elongation of the alloy. Observation of tensile fracture morphology shows that tearing strips and dimples much occurs in the fracture of Al-20Si alloy treated by high intensity ultrasonic treatment,characterized by mixed fracture of brittle and toughness crack.

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