Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Effect of Aluminum, Manganese, and Zirconium on the Content of Nickel in Molten Magnesium

마그네슘용탕의 니켈 함량에 미치는 알루미늄, 망간 및 지르코늄의 영향

  • 정대영 (인제대학교 나노융합공학과) ;
  • 문영훈 (인제대학교 나노융합공학과) ;
  • 문병기 (재료연구소 경량금속연구단) ;
  • 박원욱 (인제대학교 나노융합공학과) ;
  • 손근용 (인제대학교 나노융합공학과)
  • Received : 2015.01.22
  • Accepted : 2015.02.23
  • Published : 2015.02.28
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Abstract

Variations of nickel contents and microstructures in molten magnesium alloys on the addition of aluminum, zirconium, and manganese have been investigated. Specimens were prepared by melting under $SF_6$ and $CO_2$ atmosphere and casting into a disc of 29 mm diameter with 7~10 mm thickness from the melt acquired at the top of crucible. Before casting, the molten metal was stirred for 3 minutes after each addition of alloying elements and maintained for 30 minutes for settling down. Results showed that zirconium did not significantly affect the content of nickel while aluminum remarkably reduced it by forming $Al_3Ni_2$ phase. When manganese are added to Mg-1wt%Ni alloy along with aluminum, both elements remarkably reduced the content of nickel. The addition of 1.5 wt% manganese to Mg-1wt%Ni alloy containing aluminum further reduced the content of nickel by more than 30%, during which an additional intermetallic phase $Al_{10}Mn_3Ni$ was precipitated in the molten magnesium.

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References

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