Fe-based amorphous alloy with high strength and toughness synthesized based on nm-scale phase separation

Kwang Bok Lee; Kyoung Won Park; Sang Ho Yi; Jae Chul Lee

doi:10.3365.KJMM.2010.48.01.001

Fe-based amorphous alloy with high strength and toughness synthesized based on nm-scale phase separation

Kwang Bok Lee, Kyoung Won Park, Sang Ho Yi, Jae Chul Lee

GREEN SCHOOL (Graduate School of Energy and Environment)

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

4 Citations (Scopus)

Abstract

Experiments have demonstrated that the addition of a moderate amount of V to Fe₅₂CO_(20-x)B₂₀Si₄Nb ₄V_x amorphous alloy enhances the plasticity of the alloy. In particular, Fe₅₂CO_17.6B₂₀Si ₄Nb₄V_2.5 alloy withstood a maximum of 8.3% strain prior to fracture along with a strength exceeding 4.7 GPa. Energy dispersive x-ray spectroscopy conducted on the Fe₅₂CO _17.5B₂₀Si₄Nb₄V_2.5 alloy exhibited evidence of compositional modulation, indicating that nm-scale phase separation had occurred at local regions. In this study, the role played by nm-scale phase separation on the plasticity was investigated in terms of structural disordering and shear localization in order to better understand the structural origin of the enhanced plasticity shown by the developed alloy.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Journal of Korean Institute of Metals and Materials
Volume	48
Issue number	1
DOIs	https://doi.org/10.3365.KJMM.2010.48.01.001
Publication status	Published - 2010 Jan

Keywords

Amorphous alloy
Phase-separation
Plasticity
Shear localization
Structural disordering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Modelling and Simulation
Surfaces, Coatings and Films
Metals and Alloys

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10.3365.KJMM.2010.48.01.001

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title = "Fe-based amorphous alloy with high strength and toughness synthesized based on nm-scale phase separation",

abstract = "Experiments have demonstrated that the addition of a moderate amount of V to Fe52CO(20-x)B20Si4Nb 4Vx amorphous alloy enhances the plasticity of the alloy. In particular, Fe52CO17.6B20Si 4Nb4V2.5 alloy withstood a maximum of 8.3% strain prior to fracture along with a strength exceeding 4.7 GPa. Energy dispersive x-ray spectroscopy conducted on the Fe52CO 17.5B20Si4Nb4V2.5 alloy exhibited evidence of compositional modulation, indicating that nm-scale phase separation had occurred at local regions. In this study, the role played by nm-scale phase separation on the plasticity was investigated in terms of structural disordering and shear localization in order to better understand the structural origin of the enhanced plasticity shown by the developed alloy.",

keywords = "Amorphous alloy, Phase-separation, Plasticity, Shear localization, Structural disordering",

author = "Lee, {Kwang Bok} and Park, {Kyoung Won} and Yi, {Sang Ho} and Lee, {Jae Chul}",

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T1 - Fe-based amorphous alloy with high strength and toughness synthesized based on nm-scale phase separation

AU - Lee, Kwang Bok

AU - Park, Kyoung Won

AU - Yi, Sang Ho

AU - Lee, Jae Chul

PY - 2010/1

Y1 - 2010/1

N2 - Experiments have demonstrated that the addition of a moderate amount of V to Fe52CO(20-x)B20Si4Nb 4Vx amorphous alloy enhances the plasticity of the alloy. In particular, Fe52CO17.6B20Si 4Nb4V2.5 alloy withstood a maximum of 8.3% strain prior to fracture along with a strength exceeding 4.7 GPa. Energy dispersive x-ray spectroscopy conducted on the Fe52CO 17.5B20Si4Nb4V2.5 alloy exhibited evidence of compositional modulation, indicating that nm-scale phase separation had occurred at local regions. In this study, the role played by nm-scale phase separation on the plasticity was investigated in terms of structural disordering and shear localization in order to better understand the structural origin of the enhanced plasticity shown by the developed alloy.

AB - Experiments have demonstrated that the addition of a moderate amount of V to Fe52CO(20-x)B20Si4Nb 4Vx amorphous alloy enhances the plasticity of the alloy. In particular, Fe52CO17.6B20Si 4Nb4V2.5 alloy withstood a maximum of 8.3% strain prior to fracture along with a strength exceeding 4.7 GPa. Energy dispersive x-ray spectroscopy conducted on the Fe52CO 17.5B20Si4Nb4V2.5 alloy exhibited evidence of compositional modulation, indicating that nm-scale phase separation had occurred at local regions. In this study, the role played by nm-scale phase separation on the plasticity was investigated in terms of structural disordering and shear localization in order to better understand the structural origin of the enhanced plasticity shown by the developed alloy.

KW - Amorphous alloy

KW - Phase-separation

KW - Plasticity

KW - Shear localization

KW - Structural disordering

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Fe-based amorphous alloy with high strength and toughness synthesized based on nm-scale phase separation

Abstract

Keywords

ASJC Scopus subject areas

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