Study on the formation of new Mg–Cu–Ti–Y quaternary bulk metallic glasses with high mechanical strength

Liu, Guangbo; Gao, Peng; Xue, Zhu; Yang, Shuangming; Zhang, M.L.

doi:10.1016/j.jnoncrysol.2012.09.019

Cited by 13 publications

(4 citation statements)

References 45 publications

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“…For the bulk metallic glasses based on La-, Mg-, Zr-, Pd-, Fe-, Ni-, Cu-, Co-, investigations were conducted, initiating wide application possibilities. 1,4 Due to the high glass-forming ability and excellent mechanical properties, especially low density, Mg-based BMGs are considered to be new, promising materials. [1][2][3] Mg-based amorphous alloys are often prepared in an Mg-TM-RE system, in which TM is a transition metal, while RE is a rare-earth element.…”

Section: Introductionmentioning

confidence: 99%

“…1,4 Due to the high glass-forming ability and excellent mechanical properties, especially low density, Mg-based BMGs are considered to be new, promising materials. [1][2][3] Mg-based amorphous alloys are often prepared in an Mg-TM-RE system, in which TM is a transition metal, while RE is a rare-earth element. In 1991, Inoue, with his colleagues, generated an amorphous alloy of the following chemical composition: Mg 65 Cu 25 Y 10 .…”

Section: Introductionmentioning

confidence: 99%

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Properties and structures of bulk metallic glasses based on magnesium

Kiljan¹,

Nowosielski²,

Babilas³

2017

Mater. Tehnol.

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Nowadays, Mg-based amorphous alloys are very attractive materials used in industries such as the automotive, aviation and medical industries. This group of bulk metallic glasses has specific properties such as corrosion resistance, strength and stiffness that are higher than those of crystalline ones. Also, Mg-based amorphous alloys are characterized by their high glass-forming ability, low density, good ductility, light weight, low cost, and good thermal and electrical conductivities. This work presents the basic information regarding metallic glasses. The project was focused on Mg-based bulk metallic glasses. The work shows the results of a differential thermal analysis (DTA), differential scanning calorimetry (DSC) and calorimetric surveys that determined the temperature at the beginning and at the end of crystallization. X-ray studies were performed and they confirmed the formation of the alloy's amorphous structure. The results of cross-sectional SEM and EDS were presented using a scanning electron microscope. This confirmed the homogeneity of the chemical composition and the structure of amorphous samples in the form of a plate with a thickness of 1 mm and a width of 5 mm. The value of the average sample microhardness is 295 HV. Keywords: bulk metallic glasses, Mg-based amorphous alloys, SEM, XRD, microhardness Dandanes so amorfne zlitine zelo atraktiven material, ki se uporablja v industriji, kot je npr.: avtomobilska, letalska ter medicinska industrija. Ta skupina kovinskega stekla ima specifi~ne lastnosti, kot so npr.: odpornost proti koroziji, zdr`ljivost in togost, precej bolj{e kot kristalna skupina. Prav tako je za amorfne zlitine na osnovi Mg zna~ilna njihova visoka sposobnost oblikovanja stekla, nizka gostota, dobra duktilnost, majhna te`a, nizki stro{ki in dobre toplotne in elektri~ne prevodnosti. Delo predstavlja osnovno informacijo o kovinskih steklih. Projekt je bil fokusiran na masivnih kovinskih steklih na osnovi magnezija. Delo prikazuje rezultate diferencialne termalne analize (angl. DTA) in diferen~ne dinami~ne kalorimetrije (angl. DSC), kolori-metri~nimi analizami, ki so dolo~ile temperaturo na za~etku in na koncu kristalizacije. Izvedene so bile rentgenske {tudije, ki so potrdile nastanek amorfne strukture zlitine. Rezultati pre~nega prereza SEM in EDS so bile predstavljene s pomo~jo skeniranja z elektronskim mikroskopom. To je potrdilo homogenost struktur kemijske sestave in amorfnih vzorcev v obliki plo{~e z debelino 1 mm in {irine 5 mm. Vrednost mikrotrdote povpre~nega vzorca je 295 HV. Klju~ne besede: masivna kovinska stekla, amorfne zlitine na bazi Mg, SEM, XRD, mikrotrdota A. KILJAN et al.: PROPERTIES AND STRUCTURES OF BULK METALLIC GLASSES BASED ON MAGNESIUM Materiali in tehnologije / Materials and technology 51 (2017) 4, 563-567 567 MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY (1967-2017) -50 LET/50 YEARS Figure 8: Results of the measured microhardness for three samples of Mg 65 Cu 25 Y 10

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Properties and structures of bulk metallic glasses based on magnesium

Kiljan¹,

Nowosielski²,

Babilas³

2017

Mater. Tehnol.

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“…The distribution of shear bands in the Mg 68 Zn 30 Ce 2 amorphous ribbon was denser than in the Mg 66 Zn 30 Ce 4 amorphous ribbon; therefore, the Mg 68 Zn 30 Ce 2 sample had superior toughness compared to the Mg 66 Zn 30 Ce 4 sample. The propagation of the shear band at the fracture site in the Mg 66 Zn 30 Ce 4 amorphous ribbon was more prominent, and growth morphology of the shear bands resembling a vein pattern was observed, possibly due to the energy released during the fracture process [31]. Further magnification revealed densely distributed corrugated patterns and dents of different sizes in the shear bands.…”

Section: Microscopic Mechanism Of Ductilitymentioning

confidence: 93%

Effect of Varying Ce Content on the Mechanical Properties and Corrosion Resistance of Low-Elastic-Modulus Mg-Zn-Ce Amorphous Alloys

Wang

Zhang

et al. 2022

Metals

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Magnesium alloys have good biocompatibility because they have mechanical properties similar to those of human bones, are biodegradable, and release non-toxic corrosion products and ions in the human body. In this study, a new type of Mg70−xZn30Cex (x = 2, 4, 6, and 8) amorphous magnesium alloy was prepared by copper roller melt-spinning, and the corresponding mechanical properties and corrosion resistance were studied. The results showed that when x = 4 and 6, the Mg-Zn-Ce amorphous alloys had decent amorphous forming abilities. The addition of Ce could effectively improve the ductility of the magnesium-based amorphous alloys with an elastic modulus of each sample ranging between 30 and 58 GPa, which was similar to that of human bones; thus, these materials could effectively prevent the stress shielding effect caused by excessive elastic modulus after implantation. Additionally, the addition of an adequate amount of Ce significantly improved the corrosion resistance of the alloy. The experimental results showed that the best corrosion resistance of the magnesium-based amorphous alloys was achieved when x = 6.

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“…Magnesium-based metallic glasses are often described as the most sought after alloys given the increasing demand for light weight and low cost materials with good functional properties [ 1 – 3 ]. 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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Study on the formation of new Mg–Cu–Ti–Y quaternary bulk metallic glasses with high mechanical strength

Cited by 13 publications

References 45 publications

Properties and structures of bulk metallic glasses based on magnesium

Properties and structures of bulk metallic glasses based on magnesium

Effect of Varying Ce Content on the Mechanical Properties and Corrosion Resistance of Low-Elastic-Modulus Mg-Zn-Ce Amorphous Alloys

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

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