Influence of the electromagnetic stirring on globularization of primary solid phase in solid-liquid region

Dock Young Lee, Ki Bae Kim, Do Hyang Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

Forming of alloy and composite within a solid-liquid region, i.e. thixo-forming and rheo-forming, has been recognized as a technology offering several potential advantages over casting and forging such as a low forming pressure, reduction of macrosegregation, and reduction of porosity. In this paper, a globularization for primary solid phase by a forced fluid flow in melt due to electromagnetic stirring during solidification and isothermal stirring at solid-liquid region, was examined to produce Al alloy having a globular solid phase to get a thixotropic behavior. The electromagnetic stirrer was specially designed and manufactured to create all kind of fluid flow pattern such as a circumferential, vertical, helicoidally and contra-rotating flow pattern during the solidification of a melt. The size and roundness of primary solid phase of the quenched sample after isothermal stirring at solid-liquid region were measured with respect to a stirring time and frequency. The globularization of solid phase was enhanced with incresing the stirring time and electromagnetic flux density, i.e. stirring strength.

Original languageEnglish
Title of host publicationEco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6
Pages550-553
Number of pages4
Publication statusPublished - 2005 Dec 1
Event6th International Symposium on Eco-Materials Processing and Design, ISEPD-6 - Jinju, Korea, Republic of
Duration: 2005 Jan 162005 Jan 18

Publication series

NameMaterials Science Forum
Volume486-487
ISSN (Print)0255-5476

Other

Other6th International Symposium on Eco-Materials Processing and Design, ISEPD-6
CountryKorea, Republic of
CityJinju
Period05/1/1605/1/18

Fingerprint

stirring
solid phases
electromagnetism
Liquids
liquids
solidification
fluid flow
flow distribution
Flow patterns
Solidification
Flow of fluids
forging
pressure reduction
Forging
flux density
Casting
porosity
Porosity
composite materials
Fluxes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Lee, D. Y., Kim, K. B., & Kim, D. H. (2005). Influence of the electromagnetic stirring on globularization of primary solid phase in solid-liquid region. In Eco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6 (pp. 550-553). (Materials Science Forum; Vol. 486-487).
Lee, Dock Young ; Kim, Ki Bae ; Kim, Do Hyang. / Influence of the electromagnetic stirring on globularization of primary solid phase in solid-liquid region. Eco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6. 2005. pp. 550-553 (Materials Science Forum).
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Lee, DY, Kim, KB & Kim, DH 2005, Influence of the electromagnetic stirring on globularization of primary solid phase in solid-liquid region. in Eco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6. Materials Science Forum, vol. 486-487, pp. 550-553, 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6, Jinju, Korea, Republic of, 05/1/16.

Influence of the electromagnetic stirring on globularization of primary solid phase in solid-liquid region. / Lee, Dock Young; Kim, Ki Bae; Kim, Do Hyang.

Eco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6. 2005. p. 550-553 (Materials Science Forum; Vol. 486-487).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - Forming of alloy and composite within a solid-liquid region, i.e. thixo-forming and rheo-forming, has been recognized as a technology offering several potential advantages over casting and forging such as a low forming pressure, reduction of macrosegregation, and reduction of porosity. In this paper, a globularization for primary solid phase by a forced fluid flow in melt due to electromagnetic stirring during solidification and isothermal stirring at solid-liquid region, was examined to produce Al alloy having a globular solid phase to get a thixotropic behavior. The electromagnetic stirrer was specially designed and manufactured to create all kind of fluid flow pattern such as a circumferential, vertical, helicoidally and contra-rotating flow pattern during the solidification of a melt. The size and roundness of primary solid phase of the quenched sample after isothermal stirring at solid-liquid region were measured with respect to a stirring time and frequency. The globularization of solid phase was enhanced with incresing the stirring time and electromagnetic flux density, i.e. stirring strength.

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Lee DY, Kim KB, Kim DH. Influence of the electromagnetic stirring on globularization of primary solid phase in solid-liquid region. In Eco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6. 2005. p. 550-553. (Materials Science Forum).