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

doi:10.1063/1.2793189

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

27 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 language	English
Article number	131907
Journal	Applied Physics Letters
Volume	91
Issue number	13
DOIs	https://doi.org/10.1063/1.2793189
Publication status	Published - 2007

Bibliographical note

Funding Information:
This work was supported by the Global Research Laboratory Program of Korea Ministry of Science and Technology. One of the authors (J. M. Park) acknowledges the support from the Second Stage of Brain Korea 21 Project in 2007.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2793189

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

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.",

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AU - Kim, Do Hyang

AU - Kim, Ki Buem

AU - Kim, Won Tae

N1 - Funding Information: This work was supported by the Global Research Laboratory Program of Korea Ministry of Science and Technology. One of the authors (J. M. Park) acknowledges the support from the Second Stage of Brain Korea 21 Project in 2007.

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N2 - 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.

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

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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