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電磁攪拌對(duì)功能材料凝固組織和心部缺陷的影響
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東北大學(xué),東北大學(xué),東北大學(xué)

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國(guó)家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）


Effects of Electromagnetic Stirring on Microstructure and Central Defects of Functional Material
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Northeastern University,Northeastern University,Northeastern University

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    摘要:

    分別采用電磁攪拌和傳統(tǒng)模鑄工藝制備金基合金，研究了電磁場(chǎng)對(duì)金基合金顯微組織和心部缺陷的影響，結(jié)果表明：采用電磁攪拌技術(shù)制備的金基合金其凝固組織的枝晶化程度明顯降低，與此同時(shí)，消除了在傳統(tǒng)模鑄條件下金基合金鑄錠心部所普遍出現(xiàn)的中心縮孔和縮松等缺陷，并對(duì)電磁攪拌作用下，金基合金凝固組織的細(xì)化和鑄錠心部缺陷的消除機(jī)理進(jìn)行了探討。

    Abstract:

    Gold-based alloys were prepared by electromagnetic stirring and conventional die casting respectively. The effects of electromagnetic field on as-cast microstructure and central defects of gold-based alloy were investigated. The results show that the dendritic structure of the gold-based alloy billets prepared by electromagnetic stirring is more uniform and smaller than that by conventional casting, Meanwhile, Such defects as shrinkage cavity and porosity that frequently occur in the central region of gold-based alloy ingot produced by conventional die casting are eliminated. Moreover, the effects of electromagnetic stirring on the mechanism of refinement of the solidification structure and elimination of central defects were also discussed.

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張俊凱,張勤,厲英.電磁攪拌對(duì)功能材料凝固組織和心部缺陷的影響[J].稀有金屬材料與工程,2017,46(1):274~277.[zhangjunkai, zhang qin, liying. Effects of Electromagnetic Stirring on Microstructure and Central Defects of Functional Material[J]. Rare Metal Materials and Engineering,2017,46(1):274~277.]
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  • 收稿日期:2014-10-22
  • 最后修改日期:2014-11-30
  • 錄用日期:2014-12-25
  • 在線發(fā)布日期: 2017-03-16
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