Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (8): 1151-1153.DOI: 10.12068/j.issn.1005-3026.2014.08.020

• Materials & Metallurgy • Previous Articles     Next Articles

Effects of Electromagnetic Casting on Microstructures and Distribution of Alloying Elements of Goldbased Alloy

ZHANG Qin, ZHANG Junkai, LI Ying   

  1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2013-10-11 Revised:2013-10-11 Online:2014-08-15 Published:2014-04-11
  • Contact: ZHANG Qin
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Abstract: In order to enhance the property of goldbased alloy coating, AuCu system gold alloys with additions of multialloying elements for making vacuum sputtering target were prepared by electromagnetic casting and conventional die casting respectively. The effects of electromagnetic field on the ascast microstructure and the distribution of the alloying elements of the gold alloy were investigated. The results show that the solidification structure of the goldbased alloy billets prepared by electromagnetic casting is more uniform and smaller than that by conventional die casting. Meanwhile, the macrosegregation of the alloying elements of the gold alloy is also restrained to a great degree. Furthermore, the effects of electromagnetic field on the refinement mechanism of solidification structure and distribution of alloying elements were also discussed.

Key words: electromagnetic casting, goldbased alloy, microstructure, macrosegregation, refinement

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