Formation of cerium-based bulk metallic glasses

Zhang, B.; Zhao, Dongdong; Pan, M. X.; Wang, R.J.; Wang, W.H.

doi:10.1016/j.actamat.2006.02.044

Cited by 118 publications

(81 citation statements)

References 21 publications

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“…Besides, the molar volume m V , as a "characteristic" volume of atomic structure, is given by m V = M / ρ . Because of the limit plasticity in BMGs before fracture, we identify fracture strength with yield strength y σ in compression or tension, ignoring the small normal stress dependence of yield [10]. Therefore, it would be intriguing to see if there exist some relations among the physical properties mentioned above.…”

Section: Physical Propertiesmentioning

confidence: 99%

On Mechanical Properties of Metallic Glass and its Liquid Vitrification Characteristics

Jiang

Dai

2008

AMR

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Abstract. A systematic survey of the available data such as elastic constants, density, molar mass, and glass transition temperature of 45 metallic glasses is conducted. It is found that a critical strain controlling the onset of plastic deformation is material-independent. However, the correlation between elastic constants of solid glass and vitrification characteristics of its liquid does not follow a simple linear relation, and a characteristic volume, viz. molar volume, maybe relating to the characteristic size of a shear transformation zone (STZ), should be involved.

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Section: Physical Propertiesmentioning

confidence: 99%

On Mechanical Properties of Metallic Glass and its Liquid Vitrification Characteristics

Jiang

Dai

2008

AMR

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“…These rules do not strictly apply in many cases since new bulk metallic glasses have been discovered in some binary systems, [12][13][14][15][16] in compositions far from the eutectic points 14,[17][18][19][20] and in alloys where the addition of elements with a positive heat of mixing can induce phase separation and hence improve the GFA. 21 The lack of accuracy of these empirical rules shows the necessity for new tools with a reliable predictability in order to facilitate the search of new glass-forming compositions.…”

Section: Introductionmentioning

confidence: 99%

Prediction of good glass formers in the Al-Ni-La and Al-Ni-Gd systems using topological instability and electronegativity

Gargarella

Oliveira

Kiminami

et al. 2011

Journal of Applied Physics

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Surface rippling on bulk metallic glass under nanosecond pulse laser ablation Appl. Phys. Lett. 99, 191902 (2011) Construction of a disorder variable from Steinhardt order parameters in binary mixtures at high densities in three dimensions J. Chem. Phys. 135, 174109 (2011) Fragility of iron-based glasses Appl. Phys. Lett. 99, 161902 (2011) Communication: Are metallic glasses different from other glasses? A closer look at their high frequency dynamics J. Chem. Phys. 135, 101101 (2011) Temperature dependence of the thermoplastic formability in bulk metallic glasses J. Appl. Phys. 110, 043518 (2011) Additional information on J. Appl. Phys. A new criterion has been recently proposed combining the topological instability (k criterion) and the average electronegativity difference (De) among the elements of an alloy to predict and select new glass-forming compositions. In the present work, this criterion (k.De) is applied to the Al-Ni-La and Al-Ni-Gd ternary systems and its predictability is validated using literature data for both systems and additionally, using own experimental data for the Al-La-Ni system. The compositions with a high k.De value found in each ternary system exhibit a very good correlation with the glassforming ability of different alloys as indicated by their supercooled liquid regions (DT x ) and their critical casting thicknesses. In the case of the Al-La-Ni system, the alloy with the largest k.De value, La 56 Al 26.5 Ni 17.5 , exhibits the highest glass-forming ability verified for this system. Therefore, the combined k.De criterion is a simple and efficient tool to select new glass-forming compositions in Al-Ni-RE systems.

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“…9,10 This has been illustrated in Ce-based BMG and GdSi amorphous alloys. [11][12][13] Ce-based BMGs with excellent glass-forming ability have been extensively studied. 11 One of the important properties is the anomalous softening acoustic behavior, which is only observed in Ce-based amorphous alloys.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13] Ce-based BMGs with excellent glass-forming ability have been extensively studied. 11 One of the important properties is the anomalous softening acoustic behavior, which is only observed in Ce-based amorphous alloys. 12 Recently, the studies on specific heat reveals that the Ce-based BMG has large excess entropy in zero magnetic field at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Large magnetic entropy and electron-phonon coupling in Gd-based metallic glass

Tang

Xia

Chan

et al. 2012

Journal of Applied Physics

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We study the magnetic entropy behavior in Gd 55 Al 20 Ni 12 Co 10 Mn 3 metallic glass by magnetic susceptibility, resistivity, and specific heat at low temperatures. The Gd-based metallic glass shows metallic behavior, and a ferromagnetic to paramagnetic transition at 106 K. The ferromagnetic order assists the electron-phonon coupling, which induces the large excess magnetic entropy below Curie temperature in the Gd-based metallic glass. The results are important to understand the electron-phonon coupling behavior in disordered alloys. V C 2012 American Institute of Physics. [http://dx

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Formation of cerium-based bulk metallic glasses

Cited by 118 publications

References 21 publications

On Mechanical Properties of Metallic Glass and its Liquid Vitrification Characteristics

On Mechanical Properties of Metallic Glass and its Liquid Vitrification Characteristics

Prediction of good glass formers in the Al-Ni-La and Al-Ni-Gd systems using topological instability and electronegativity

Large magnetic entropy and electron-phonon coupling in Gd-based metallic glass

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