The recovery of the shear viscosity of thermally aged bulk and ribbon glassy Pd40Cu30Ni10P20 by rapid quenching from the supercooled liquid state

Khonik, V. A.; Lysenko, A. V.

doi:10.1002/pssr.200802238

Cited by 4 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is important to investigate whether the annealing-induced loss of the deformation ability is truly irreversible or it can be recovered by a special heat treatment of glass. It was earlier found that the shear viscosity [3], stress relaxation ability [4,5], low frequency viscoelastic internal friction [6] as well as high-frequency shear modulus [7,8] of aged glassy Pd 40 Cu 30 Ni 10 P 20 can be recovered by rapid quenching from the supercooled liquid state (i.e. from temperatures T > T g ) indicating the recovery of structural relaxation lost in the course of preannealing.…”

Section: Introductionmentioning

confidence: 97%

Usual stress relaxation in an ‘unusual’ Pd40Cu40P20 metallic glass

Khonik

Nguen

Khonik

et al. 2009

Journal of Non-Crystalline Solids

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 97%

Usual stress relaxation in an ‘unusual’ Pd40Cu40P20 metallic glass

Khonik

Nguen

Khonik

et al. 2009

Journal of Non-Crystalline Solids

View full text Add to dashboard Cite

“…The first reports on partial or even full disembrittlement produced by annealing below T g were published in the 1980s and beginning of 1990s of the past century . There are several later papers dealing with the recovery of mechanical properties deteriorated by the preceding structural relaxation below T g . The rejuvenation procedure in the majority of instances included heating of aged samples into the supercooled liquid region (i.e., above T g ) and subsequent fast cooling at the rates comparable with the production quenching rate (≈10 2 K s −1 ) or even bigger .…”

mentioning

confidence: 99%

“…There are several later papers dealing with the recovery of mechanical properties deteriorated by the preceding structural relaxation below T g . The rejuvenation procedure in the majority of instances included heating of aged samples into the supercooled liquid region (i.e., above T g ) and subsequent fast cooling at the rates comparable with the production quenching rate (≈10 2 K s −1 ) or even bigger . In the latter case, the rejuvenation can lead to opposite property changes exceeding by the absolute value those occurring upon preceding structural relaxation below T g .…”

mentioning

confidence: 99%

Rejuvenation of a Metallic and Oxide Glass by Cooling from the Supercooled Liquid State at Laboratory Rates

Afonin

Кобелев

Khonik

et al. 2018

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

Calorimetric study of relaxation and rejuvenation of PdNiP and SiO 2 -based glasses by cooling from the supercooled liquid state at laboratory rates is performed. For the former glass, cooling at the highest rate of 54 K min À1 recovers 34-36% of the enthalpy released upon relaxation. The interplay between relaxation and rejuvenation leads to a dependence of the heat absorption peak above the glass transition temperature T g on the cooling rate. The oxide glass displays a similar effect with analogous dependence on the cooling rate. Qualitative explanations for the observed phenomena are presented.Glasses are labile systems undergoing continuous relaxation toward metastable equilibrium. [1] The latter, however, in most cases is kinetically unachievable on the experimental time scale. Any annealing at temperatures below the glass transition temperature T g is accompanied by structural relaxation, which leads to the changes of practically all physical properties. However, independent of glass nature, it is generally possible to reverse structural relaxation making the structure to evolve toward higher energy states with concurrent change of the properties. This phenomenon is termed the recovery or rejuvenation. For polymer glasses, it was documented long ago. [2,3] From both scientific and application viewpoints, it is very important and challenging.In the case of metallic glasses (MGs), structural relaxation leads as a rule to undesirable structural changes, which result in the deterioration of practically important properties, e.g., causing the loss of plasticity, embrittlement, etc. However, rejuvenation provides partial or even full restoration of these properties. There are quite a few reports on the rejuvenation of MGs in the literature. The first reports on partial or even full disembrittlement produced by annealing below T g were published in the 1980s and beginning of 1990s of the past century. [4][5][6] There are several later papers dealing with the recovery of mechanical properties deteriorated by the preceding structural relaxation below T g . [7][8][9][10][11][12][13][14][15] The rejuvenation procedure in the majority of instances included heating of aged samples into the supercooled liquid region (i.e., above T g ) and subsequent fast cooling at the rates comparable with the production quenching rate (%10 2 K s À1 ) or even bigger. [7][8][9][10][11][12][13][14] In the latter case, the rejuvenation can lead to opposite property changes exceeding by the absolute value those occurring upon preceding structural relaxation below T g . [9,10] Besides thermal processing, rejuvenation of MGs can be achieved by plastic deformation, [7,16] loading within the elastic limit, [17] cryogenic thermocycling, [18] applying hydrostatic stress, [19] ultrasound, [20] or irradiation. [16] Detailed reviews on MGs' thermo-mechanical rejuvenation were published recently. [16,17] On the other hand, any rejuvenation experiments on oxide glasses are unknown to us. In part, this is due to the complexity of fast cooling of sampl...

show abstract

Recovery of the shear modulus of relaxed bulk glassy Pd40Cu30Ni10P20 by cooling from elevated temperatures at low rates

Mitrofanov¹,

Khonik²,

Lyakhov³

et al. 2011

Intermetallics

View full text Add to dashboard Cite

The recovery of the shear viscosity of thermally aged bulk and ribbon glassy Pd₄₀Cu₃₀Ni₁₀P₂₀ by rapid quenching from the supercooled liquid state

Abstract: The recovery of the shear viscosity of thermally aged bulk and ribbon glassy Pd 40 Cu 30 Ni 10 P 20 by rapid quenching from the supercooled liquid state

Cited by 4 publications

References 17 publications

Usual stress relaxation in an ‘unusual’ Pd40Cu40P20 metallic glass

Usual stress relaxation in an ‘unusual’ Pd40Cu40P20 metallic glass

Rejuvenation of a Metallic and Oxide Glass by Cooling from the Supercooled Liquid State at Laboratory Rates

Recovery of the shear modulus of relaxed bulk glassy Pd40Cu30Ni10P20 by cooling from elevated temperatures at low rates

Contact Info

Product

Resources

About