Formation and mechanical properties of Zr–Ni–Al glassy alloys with high glass-forming ability

Li, Y.H.; Zhang, W.; Dong, C.; Qiang, J. B.; Makino, Akihiro; Inoue, Akihisa

doi:10.1016/j.intermet.2010.03.041

Cited by 35 publications

(10 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zr 64 Ni 25 Al 11 , which are some of the best glass formers with critical thicknesses of 15 and 12 mm respectively [47]. Similarly, the critical casting thickness of C 46 Zr 54 is only 0.8 mm [9], but its fragility is comparable to that of LM601, which is a much better glass former.…”

Section: Iiid Fragility and Glass-formabilitymentioning

confidence: 97%

Correlation of the fragility of metallic liquids with the high temperature structure, volume, and cohesive energy

Gangopadhyay

Pueblo

Johnson

et al. 2017

The Journal of Chemical Physics

View full text Add to dashboard Cite

The thermal expansion coefficients, structure factors, and viscosities of twenty-five equilibrium and supercooled metallic liquids have been measured using an electrostatic levitation (ESL) facility. The structure factor was measured at the Advanced Photon Source, Argonne, using the ESL. A clear connection between liquid fragility and structural and volumetric changes at high temperatures is established; the observed changes are larger for the more fragile liquids. It is also demonstrated that the fragility of metallic liquids is determined to a large extent by the cohesive energy and is, therefore, predictable. These results are expected to provide useful guidance in the future design of metallic glasses.

show abstract

Section: Iiid Fragility and Glass-formabilitymentioning

confidence: 97%

Correlation of the fragility of metallic liquids with the high temperature structure, volume, and cohesive energy

Gangopadhyay

Pueblo

Johnson

et al. 2017

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

“…The critical BMG diameter decreases drastically from 8 to 3 mm with a decrease in Al content around Ni 4 Zr 9 Al 2 . Li et al [11] reported a critical diameter of 15 mm for Al 15 Ni 20 Zr 60 glass in a pour-casting experiment. Our casting experiment, however, indicates that its GFA is inferior to that of Ni 4 Zr 9 Al 2 .…”

Section: Bmg Formationmentioning

confidence: 99%

“…A rationalization of the glass-forming abilities (GFAs) of Al-TM-Zr alloys is desirable to quantify complex BMG compositions. Disagreements exist with regard to experimental accounts of the GFA for fundamental ternary systems [9][10][11]. This study is devoted to a reexamination of the GFAs of Al-Ni-Zr alloys.…”

mentioning

confidence: 99%

Revisiting Al-Ni-Zr bulk metallic glasses using the ‘cluster-resonance’ model

Qiang

Wang

et al. 2011

Chin. Sci. Bull.

View full text Add to dashboard Cite

(x=1, 1.5, 2, 3) were designed in this work and the bulk metallic glass (BMG) formation of these compositions was investigated by copper mold suction casting. A centimeter-scale BMG sample was obtained for the Ni 4 Zr 9 Al 2 (Al 13.3 Ni 26.7 Zr 60 in atomic percent) composition. The thermal glass parameters for this BMG were determined to be ΔT x = 68 K, T rg = 0.579, and γ m = 0.689. Using the 'cluster-resonance' model for glass formation an optimal BMG composition was determined using the cluster formula [Ni 3 Zr 9 ](Al 2 Ni 1 ). . These complex alloys are based on the basic ternary systems of Al-TM-Zr (TM = Ni, Co, Cu) together with specific alloying substitutes [5,7,8]. A rationalization of the glass-forming abilities (GFAs) of Al-TM-Zr alloys is desirable to quantify complex BMG compositions. Disagreements exist with regard to experimental accounts of the GFA for fundamental ternary systems [9][10][11]. This study is devoted to a reexamination of the GFAs of Al-Ni-Zr alloys. We first use the 'cluster-plus-glue-atom' model [12,13] for BMG composition design. This model presents a semiphenomenological treatment of a BMG structure. An atomic cluster of specific topology, chemical composition and glue structure were used to establish the statistical composition of a BMG system. An ideal BMG assumes universal cluster formulae such as [cluster] 1 (glue atoms) x , with x=1 or 3 [13,14]. To determine the structural stability of the model structure we recently proposed a 'cluster-resonance' model by taking the coupling of long-range Friedel oscillations of valence electrons with the pair correlation function into consideration [15]. The composition design of Al-Ni-Zr BMG alloys is incorporated into the model that follows. The 'cluster-resonance' model and composition designAccording to Häussler et al. [16] the static atomic structure of an ideal amorphous state is in resonance with the longrange Friedel oscillations of valence electrons. The resonance results in spherical periodicity as shown by the peak (shell) oscillation with a certain period in the pair correlation function of an ideal amorphous state. The spherical periodicity gives an oscillation wavelength ( Fr ) in the form of

show abstract

“…Cu-Zr-Al BMGs 12-16 have such advantageous properties as good toughness indicated by their high Charpy impact value, good corrosion resistance, and high glass forming ability (GFA). However, their plasticity at room temperature is usually less than 2 % compared with that of BMGs in the Zr-Ni-Al and ZrAl-Ni-Cu systems [17][18]. Ni and Ti form a complete solid solution with Cu and Zr.…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of ball-milling induced crystalline–amorphous transformation in Cu–Zr–Al–Ni–Ti alloys

et al. 2015

View full text Add to dashboard Cite

An amorphization process in (Cu 49 Zr 45-x Al 6+x ) 100-y-z Ni y Ti z (x=1, y,z=0;5;10) induced by ballmilling is reported in the present work. The aim was investigation of the effect of Ni and Ti addition to Cu 49 Zr 45 Al 6 and Cu 49 Zr 44 Al 7 based alloys as well as type of initial phases on the amorphization processes. Also the milling time sufficient for obtaining fully amorphous state was determined. The entire milling process lasted 25 hours. Drastic structural changes were observed in each alloy after first 5 h of milling. In most cases, after 15 h of milling the powders had fully amorphous structure according to XRD except for those ones, where TEM revealed a few nanosized crystalline particles in the amorphous matrix. In (Cu 49 Zr 45 Al 6 ) 80 Ni 10 Ti 10 alloy the amorphization process took place after 12 h of milling and the amorphous state was stable up to 25 h of milling. In the case of (Cu 49 Zr 44 Al 7 ) 80 Ni 10 Ti 10 alloy the powders have fully amorphous structure between 12 h and 15 h of milling.

show abstract

Formation and mechanical properties of Zr–Ni–Al glassy alloys with high glass-forming ability

Cited by 35 publications

References 20 publications

Correlation of the fragility of metallic liquids with the high temperature structure, volume, and cohesive energy

Correlation of the fragility of metallic liquids with the high temperature structure, volume, and cohesive energy

Revisiting Al-Ni-Zr bulk metallic glasses using the ‘cluster-resonance’ model

Peculiarities of ball-milling induced crystalline–amorphous transformation in Cu–Zr–Al–Ni–Ti alloys

Contact Info

Product

Resources

About