MISC

2014年5月

Solidification Structure of Al-Cu and Sn-Cu-Sb Alloys Obtained by Casting through Induction Stirring Using Permanent Magnet

MATERIALS TRANSACTIONS
  • Fumitaka Otsubo
  • ,
  • Satoshi Nishida
  • ,
  • Hidenori Era

55
5
開始ページ
806
終了ページ
812
記述言語
英語
掲載種別
DOI
10.2320/matertrans.F-M2014804
出版者・発行元
JAPAN INST METALS

Permanent magnetic stirring is superior in terms of cost and operability compared with electromagnetic stirring. However, it is applied only to melting furnace. In this study, attempts were made to apply permanent magnetic stirring molten metal, and the effects of the stirring on grain refinement, increase in hardness, and suppression of porosity were investigated. We used a stirring device developed by ourselves and two alloys with different solidification morphologies and specific gravities (rho). Results showed that needlelike crystals were cut off in Sn-Cu-Sb alloy (rho = 7.4). On the other hand, the growth of columnar crystals was inhibited, and grain refinement and a region growing with equiaxed crystals were observed in Al-Cu alloy (rho = 2.7) due to the stirring. Furthermore, increased hardness and suppression of porosity were confirmed with the increase in the rotating velocity of magnets in both alloys. Theoretical calculations showed that the molten metal near the mold was directly stirred by Lorentz force, but other regions were indirectly stirred by the flow of force from the directly stirring.

Web of Science ® 被引用回数 : 3

リンク情報
DOI
https://doi.org/10.2320/matertrans.F-M2014804
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000338758700012&DestApp=WOS_CPL

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