Abnormal devitrification behavior and mechanical response of cold-rolled Mg-rich Mg-Cu-Gd metallic glasses

Lee, J.I.; Kim, Jinwoo; Oh, Hyun Seok; Park, J.S.; Park, E.S.

doi:10.1016/j.actamat.2016.06.026

Cited by 23 publications

(1 citation statement)

References 35 publications

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“…Many chemical compositions of metallic glasses based on Mg have been extensively reported in recent years [4–7], but among all the studied glassy materials, the Mg-TM-RE (TM – transition metal: Cu, Ni, Zn, Ag; RE – rare-earth transition metal: Y, Gd, Nd) system is one of the most highly investigated [8]. The good mechanical properties together with a large supercooled liquid region and high glass-forming ability with critical cooling rates below 10 3 K/s make the Mg-TM-RE amorphous alloys attractive for a wide range of engineering applications [9].…”

Section: Introductionmentioning

confidence: 99%

Atomic structure of Mg-based metallic glass investigated with neutron diffraction, reverse Monte Carlo modeling and electron microscopy

Babilas¹,

Łukowiec²,

Temleitner³

2017

Beilstein J. Nanotechnol.

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The structure of a multicomponent metallic glass, Mg65Cu20Y10Ni5, was investigated by the combined methods of neutron diffraction (ND), reverse Monte Carlo modeling (RMC) and high-resolution transmission electron microscopy (HRTEM). The RMC method, based on the results of ND measurements, was used to develop a realistic structure model of a quaternary alloy in a glassy state. The calculated model consists of a random packing structure of atoms in which some ordered regions can be indicated. The amorphous structure was also described by peak values of partial pair correlation functions and coordination numbers, which illustrated some types of cluster packing. The N = 9 clusters correspond to the tri-capped trigonal prisms, which are one of Bernal’s canonical clusters, and atomic clusters with N = 6 and N = 12 are suitable for octahedral and icosahedral atomic configurations. The nanocrystalline character of the alloy after annealing was also studied by HRTEM. The selected HRTEM images of the nanocrystalline regions were also processed by inverse Fourier transform analysis. The high-angle annular dark-ﬁeld (HAADF) technique was used to determine phase separation in the studied glass after heat treatment. The HAADF mode allows for the observation of randomly distributed, dark contrast regions of about 4–6 nm. The interplanar spacing identified for the orthorhombic Mg2Cu crystalline phase is similar to the value of the first coordination shell radius from the short-range order.

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Section: Introductionmentioning

confidence: 99%

Atomic structure of Mg-based metallic glass investigated with neutron diffraction, reverse Monte Carlo modeling and electron microscopy

Babilas¹,

Łukowiec²,

Temleitner³

2017

Beilstein J. Nanotechnol.

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Modulation of plastic flow in metallic glasses via nanoscale networks of chemical heterogeneities

Kim

et al. 2017

Acta Materialia

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Utilization of high entropy alloy characteristics in Er-Gd-Y-Al-Co high entropy bulk metallic glass

Kim

et al. 2018

Acta Materialia

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Abnormal devitrification behavior and mechanical response of cold-rolled Mg-rich Mg-Cu-Gd metallic glasses

Cited by 23 publications

References 35 publications

Atomic structure of Mg-based metallic glass investigated with neutron diffraction, reverse Monte Carlo modeling and electron microscopy

Atomic structure of Mg-based metallic glass investigated with neutron diffraction, reverse Monte Carlo modeling and electron microscopy

Modulation of plastic flow in metallic glasses via nanoscale networks of chemical heterogeneities

Utilization of high entropy alloy characteristics in Er-Gd-Y-Al-Co high entropy bulk metallic glass

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