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http://dx.doi.org/10.3365.KJMM.2010.48.01.001

Fe-based Amorphous Alloy with High Strength and Toughness Synthesized based on nm-scale Phase Separation  

Lee, Kwang-Bok (Department of Materials Science and Engineering, Korea University)
Park, Kyoung-Won (Advanced Functional Materials Research Center, Korea Institute of Science and Technology)
Yi, Sang-Ho (FINEX Group)
Lee, Jae-Chul (Department of Materials Science and Engineering, Korea University)
Publication Information
Korean Journal of Metals and Materials / v.48, no.1, 2010 , pp. 1-7 More about this Journal
Abstract
Experiments have demonstrated that the addition of a moderate amount of V to $Fe_{52}Co_{(20-x)}B_{20}Si_4Nb_4V_x$ amorphous alloy enhances the plasticity of the alloy. In particular, $Fe_{52}Co_{17.5}B_{20}Si_4Nb_4V_{2.5}$ 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 $Fe_{52}Co_{17.5}B_{20}Si_4Nb_4V_{2.5}$ 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.
Keywords
amorphous alloy; phase-separation; structural disordering; shear localization; plasticity;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 2
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