Plastic Deformation Mechanism of Ductile Fe50Ni30P13C7 Metallic Glass

Kangkang Geng; Weiming Yang; Jinyong Mo; Haishun Liu; Feng Wei; Zhanguo Ma; Yucheng Zhao; Akihisa Inoue

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자료유형: 학술저널

저자정보: Kangkang Geng (China University of Mining and Technology) Weiming Yang (China University of Mining and Technology) Jinyong Mo (China University of Mining and Technology) Haishun Liu (China University of Mining and Technology) Feng Wei (China University of Mining and Technology) Zhanguo Ma (China University of Mining and Technology) Yucheng Zhao (China University of Mining and Technology) Akihisa Inoue (Josai International University)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.25 No.2

발행연도: 2019.1

수록면: 487 - 498 (12page)

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Shear band (SB) multiplication is considered as an essential characteristic of the plastic deformation in metallic glasses(MGs). In this work, the evolutionary characteristics of SBs and serrated behavior in ductile Fe50Ni30P13C7MGs werestudied by the finite element method simulation. The study demonstrated that the stress field would redistribute and becomeinhomogeneous during SB sliding, where the stress perpendicular to the original SB gradually accumulates until reachingthe magnitude of yielding strength and triggering new SBs. The results of simulation are in good agreement with the SBsintersection morphologies observed in SEM images and the serration flows on the stress–strain curves. Furthermore, severalfactors affecting stress field distribution in MGs, such as contact friction, aspect ratio, and boundary confinement, werealso analyzed and discussed. The overall results indicate that the ductility of Fe-based MGs could be achieved without anyinhomogeneous structure, and scientifically explicate the dependence of SB multiplication on both material properties andloading condition, which can provide us with a deeper understanding on plastic deformation mechanism of MGs.

#Fe-based metallic glasses · Shear bands · Plastic deformation · Finite element simulation

참고문헌 (42)

참고문헌 신청

A. Dubach / 2009 / Constitutive model for inhomogeneous flow in bulk metallic glasses / Acta Mater 57(3):881~892

J. H. Yao / 2008 / Ductile Fe–Nb–B bulk metallic glass with ultrahigh strength / Appl. Phys. Lett 92(25):251906

G. P. Zheng / 2011 / Simulation of shear banding and crack propagation in bulk metallic glass matrix composites / J. Alloys Compd 509:S136~S140

D. P. Wang / 2017 / Mutual interaction of shear bands in metallic glasses / Intermetallics 85:48~53

S. F. Guo / 2010 / Enhancement of plasticity of Fe-based bulk metallic glass by Ni substitution for Fe / J. Alloys Compd 504:S78~S81

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