Comparative internal friction study of bulk and ribbon glassy Zr52.5Ti5Cu17.9Ni14.6Al10

Bobrov, O. P.; Khonik, V. A.; Laptev, S.N.; Yazvitsky, M.Yu.

doi:10.1016/s1359-6462(03)00212-4

Cited by 26 publications

(21 citation statements)

References 27 publications

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“…This rather surprising finding will be discussed in a separate publication. It could be just briefly mentioned that a minor effect of such a huge change of the production quenching rate was earlier noticed upon measurements of linear heating internal friction 16 and isothermal stress relaxation 17 19 a change of the production quenching rate must result in a change of the density while the latter determines the amount of the free volume. The independence of aforementioned viscoelastic and anelastic properties on the production quenching rate, therefore, could question the role of the free volume as a key parameter controlling the kinetics of structural relaxation and related viscoelastic phenomena.…”

Section: Methodsmentioning

confidence: 97%

Relationship between the shear viscosity and heating rate of metallic glasses belowTg

et al. 2006

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It has been shown that the shear viscosity of bulk and ribbon glassy Pd 40 Cu 30 Ni 10 P 20 at temperatures T Ͻ T g ͑T g is the glass transition temperature͒ follows a simple relationship, ln ͑T͒ = B͑T͒ −ln Ṫ , where Ṫ is the heating rate and B depends only on temperature. This means, in particular, that ln ͑T͒ dependencies measured at different heating rates can be superposed by a simple vertical shift and the derivative ‫ץ͉‬ ln / ‫ץ‬ ln Ṫ ͉ T=const = −1. Such a behavior is indeed found for glassy Pd 40 Cu 30 Ni 10 P 20 . The experimental viscosity data derived earlier on other metallic glasses follow the same relationship. It is argued that this relationship originates from stress-oriented irreversible structural relaxation with distributed activation energies.

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Section: Methodsmentioning

confidence: 97%

Relationship between the shear viscosity and heating rate of metallic glasses belowTg

et al. 2006

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“…However, their experiments have been performed at high frequency, typically a few kilohertz or even more (a few megahertz) in the case of ultrasonic investigation [30,[32][33][34][35]40,41]. Since ␣ relaxation is shifted towards higher temperature when the testing frequency is increased, this relaxation may be hindered by the onset of crystallization.…”

Section: Influence Of Testing Frequency During a Continuous Heatingmentioning

confidence: 99%

“…In oxide glasses, the ␣ relaxation is also observed, but the ␤ relaxation is not systematically present and, when it occurs, it can be due to the presence of water or local movements of foreign ions. In bulk metallic glasses, different investigations have been reported [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46]. However, a lot of questions are still open, for instance: (i) what is the influence of structural relaxation and crystalliza- tion on the complex modulus?…”

Section: Introductionmentioning

confidence: 99%

Dynamic mechanical properties in a Zr46.8Ti13.8Cu12.5Ni10Be27.5 bulk metallic glass

Pelletier

2005

Journal of Alloys and Compounds

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“…Previous studies [5][6][7][8][9][10][11][12][13][14][15][16] show that the mechanical spectroscopy is sensitive to the local atomic rearrangement and the kinetics of atomic movements involving the structural evolution of metallic glasses. Analysis of the dynamic mechanical behaviors of BMGs can provide useful information about the atomic mechanism of structural relaxation and crystallization for these materials.…”

Section: Introductionmentioning

confidence: 99%

Dynamic mechanical behavior of a Zr-based bulk metallic glass during glass transition and crystallization

2009

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The dynamic mechanical behaviors of the Zr 41 Ti 14 Cu 12.5 Ni 8 Be 22.5 Fe 2 bulk metallic glass (BMG) during continuous heating at a constant rate were investigated. The glass transition and crystallization of the Zr-based BMG were thus characterized by the measurements of storage modulus E′ and internal friction Q −1 . It was found that the variations of these dynamic mechanical quantities with temperature were interrelated and were well in agreement with the DSC trace obtained at the same heating rate. The origin of the first peak in the internal friction curve was closely related to the dynamic glass transition and subsequent primary crystallization. Moreover, it can be well described by a physical model, which can characterize atomic mobility and mechanical response of disordered condense materials. In comparison with the DSC trace, the relative position of the first internal friction peak of the BMG was found to be dependent on its thermal stability against crystallization.

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Comparative internal friction study of bulk and ribbon glassy Zr52.5Ti5Cu17.9Ni14.6Al10

Cited by 26 publications

References 27 publications

Relationship between the shear viscosity and heating rate of metallic glasses belowTg

Relationship between the shear viscosity and heating rate of metallic glasses belowTg

Dynamic mechanical properties in a Zr46.8Ti13.8Cu12.5Ni10Be27.5 bulk metallic glass

Dynamic mechanical behavior of a Zr-based bulk metallic glass during glass transition and crystallization

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