Deformation-induced rotational eutectic colonies containing length-scale heterogeneity in an ultrafine eutectic Fe83 Ti7 Zr6 B4 alloy

Jin Man Park, Do Hyang Kim, Ki Buem Kim, Won Tae Kim

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

Microstructural investigations of an ultrafine eutectic Fe83 Ti7 Zr6 B4 alloy reveal that spherical eutectic colonies are composed of nanoeutectic areas which are encapsulated by submicron eutectic areas indicating length-scale heterogeneity of lamellar structure. Furthermore, formation of the wavy and discontinuous shear bands indicative of dissipation of the shear stress are possibly caused by a rotation of the eutectic colonies along the submicron eutectic areas during deformation, leading to developing typical dimples on the fracture surface. The rotation of the eutectic colonies containing the length-scale heterogeneity is proposed to be responsible for macroscopic plasticity of the ultrafine eutectic Fe83 Ti7 Zr6 B4 alloy.

Original languageEnglish
Article number131907
JournalApplied Physics Letters
Volume91
Issue number13
DOIs
Publication statusPublished - 2007 Oct 5

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eutectics
plastic properties
shear stress
dissipation
shear

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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Deformation-induced rotational eutectic colonies containing length-scale heterogeneity in an ultrafine eutectic Fe83 Ti7 Zr6 B4 alloy. / Park, Jin Man; Kim, Do Hyang; Kim, Ki Buem; Kim, Won Tae.

In: Applied Physics Letters, Vol. 91, No. 13, 131907, 05.10.2007.

Research output: Contribution to journalArticle

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AU - Kim, Do Hyang

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AU - Kim, Won Tae

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AB - Microstructural investigations of an ultrafine eutectic Fe83 Ti7 Zr6 B4 alloy reveal that spherical eutectic colonies are composed of nanoeutectic areas which are encapsulated by submicron eutectic areas indicating length-scale heterogeneity of lamellar structure. Furthermore, formation of the wavy and discontinuous shear bands indicative of dissipation of the shear stress are possibly caused by a rotation of the eutectic colonies along the submicron eutectic areas during deformation, leading to developing typical dimples on the fracture surface. The rotation of the eutectic colonies containing the length-scale heterogeneity is proposed to be responsible for macroscopic plasticity of the ultrafine eutectic Fe83 Ti7 Zr6 B4 alloy.

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