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Study on micro-scale phase separation structures in undercooled alloys using an electromagnetic levitator superimposed with a static magnetic field

Research Project

Project/Area Number 24760127
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Fluid engineering
Research InstitutionToyama Prefectural University (2014)
Tohoku University (2012-2013)

Principal Investigator

SUGIOKA Ken-ichi  富山県立大学, 工学部, 講師 (80438233)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords相分離構造形成 / 混相流 / 電磁浮遊法 / turbulence
Outline of Final Research Achievements

We studied the effect of melt convection on phase separation structures in undercooled alloys by using an electromagnetic levitator with a static magnetic field. It was found that, the static magnetic field changes phase separated structures drastically when the magnetic field exceeded a certain value, i.e., approximately 1.5 T in this study. Moreover, it was speculated from the result of periodic laser heating that the marked change in the phase separation structures at approximately 1.5 T might be due to a convective transition from turbulent flow to laminar flow in the molten sample.
We conducted two-dimensional phase field simulation under the Stokes approximation for a droplet in the linear shear flow with a static magnetic field. The numerical results shows that the strong lift force acted on the droplet due to the static magnetic field. It was speculated that the change of the motion of the droplets due to such lift force caused the change of the phase separation structures.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (7 results)

All 2014 2013 2012 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (6 results) (of which Invited: 2 results)

  • [Journal Article] Study on the effect of melt convection on phase separation structures in undercooled CuCo alloys using an electromagnetic levitator superimposed with a static magnetic field2014

    • Author(s)
      Ken-ichi Sugioka, Takamitsu Inoue, Tsubasa Kitahara, Ryo Kurosawa, Masaki Kubo, Takao Tsukada, Masahito Uchikoshi, Hiroyuki Fukuyama
    • Journal Title

      Metallurgical and Materials Transactions B

      Volume: 45 Issue: 4 Pages: 1439-1445

    • DOI

      10.1007/s11663-014-0052-9

    • Related Report
      2014 Annual Research Report 2013 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 静磁場下での電磁浮遊溶融CuCo液滴の過冷却凝固2014

    • Author(s)
      北原翼, 上野翔也, 杉岡健一, 久保正樹, 塚田隆夫, 福山博之
    • Organizer
      日本鉄鋼協会 第168回秋季講演大会
    • Place of Presentation
      名古屋大学 東山キャンパス
    • Year and Date
      2014-09-24 – 2014-09-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] 静磁場重畳電磁浮遊技術を利用したCuCo合金液滴の相分離及び過冷却凝固組織構造に及ぼす融液内対流の影響の検討2014

    • Author(s)
      杉岡 健一、井上 貴充、北原 翼、黒澤 亮、久保 正樹、塚田 隆夫、打越 雅仁、福山 博之
    • Organizer
      資源素材学会平成26年度春季大会
    • Place of Presentation
      東京大学生産技術研究所
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] CuCo合金融体の相分離構造に及ぼす融体内対流の影響2013

    • Author(s)
      北原翼, 井上貴充, 黒澤亮, 杉岡健一, 久保正樹, 塚田隆夫, 打越雅仁, 福山博之
    • Organizer
      第34回日本熱物性シンポジウム
    • Place of Presentation
      富山県民会館
    • Related Report
      2013 Research-status Report
  • [Presentation] 静磁場重畳電磁浮遊CuCo合金液滴の過冷却凝固組織構造に及ぼす融液内対流の影響2013

    • Author(s)
      井上 貴充,黒澤 亮,北原 翼,杉岡 健一,久保 正樹,塚田 隆夫,打越 雅仁,福山 博之
    • Organizer
      化学工学会第78年会
    • Place of Presentation
      大阪大学
    • Related Report
      2012 Research-status Report
  • [Presentation] Relationship between Applied Static Magnetic Field Strength and Thermal Conductivity Values of Molten Materials Measured Using an EML Technique2012

    • Author(s)
      Yuya Baba, Ken-ichi Sugioka, Masaki Kubo, Takao Tsukada, Kazutoshi Sugie, Hidekazu Kobatake and Hiroyuki Fukuyama
    • Organizer
      化学工学会第44回秋季大会
    • Place of Presentation
      東北大学
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] 静磁場重畳電磁浮遊によるCuCo合金液滴の過冷却凝固組織構造に及ぼす融液内対流の影響の検討

    • Author(s)
      井上 貴充,黒澤 亮,北原 翼,杉岡 健一,久保 正樹,塚田 隆夫,打越 雅仁,福山 博之
    • Organizer
      第12回宮城化学工学懇話会先端研究発表会
    • Place of Presentation
      東北大学
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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