J Mater Sci Technol ›› 2011, Vol. 27 ›› Issue (8): 746-752.

• Regular Papers • Previous Articles     Next Articles

Behaviors of Oxide Layer at Interface between Semi-solid Filler Metal and Aluminum Matrix Composites during Vibration

Lei Shi, Jiuchun Yan, Yanfei Han, Bo Peng   

  1. State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2011-05-23 Revised:2011-06-18 Online:2011-08-30 Published:2011-08-30
  • Contact: Jiuchun Yan
  • Supported by:

    the National Natural Science Foundation of China under grant No. 50575057

Abstract: The joint interface between semi-solid Zn-Al filler metal and SiCp/Al composites with applying vibration for different time was examined. With increasing vibrating time, the oxide layer was disrupted prior at the centre to the periphery of the interface. And the solid grains near the centre of interface in semi-solid filler metal aggregated into two solid regions and compressed the composites during vibration; the solid grains near the periphery of interface moved toward the edge and scraped the composites during vibration. The models of disrupting oxide layer under the vibration condition were developed. At the centre of interface, the oxide layer was tore and stripped during the solid grains in the semi-solid filler metal depressing the composites with a very high compressive stress. At the periphery of interface, the oxide layer was cut and stripped into the filler metal during the solid grains scraping the interface.

Key words: SiCp/Al composites, Brazing, Oxide layer, Semi-solid state