The free volume kinetics during structural relaxation in bulk Pd-P based metallic glasses

O. Haruyama; H. Sakagami; N. Nishiyama; A. Inoue

doi:10.1016/j.msea.2006.02.325

The free volume kinetics during structural relaxation in bulk Pd-P based metallic glasses

O. Haruyama, H. Sakagami, N. Nishiyama, A. Inoue

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

Isothermal enthalpy relaxation and density relaxation were investigated for bulk Pd_42.5Cu₃₀Ni_7.5P₂₀ and Pd₄₀Ni₄₀P₂₀ metallic glasses. The density was measured at room temperature after relaxing the sample for a given time. Enthalpy relaxation data of Pd_42.5Cu₃₀Ni_7.5P₂₀ glass and density relaxation data of Pd₄₀Ni₄₀P₂₀ glass were well fitted by a non-Debye type relaxation function. A fit to a stretched exponential relaxation function of density relaxation data at 549 K of Pd₄₀Ni₄₀P₂₀ glass gave the exponential index of 0.66. Isochoric Kauzmann temperature T_K was estimated from density measurements for nearly fully relaxed bulk glasses and T_K = 456 ± 10 K was obtained.

Original language	English
Pages (from-to)	497-500
Number of pages	4
Journal	Materials Science and Engineering A
Volume	449-451
DOIs	https://doi.org/10.1016/j.msea.2006.02.325
Publication status	Published - 2007 Mar 25

Keywords

Bulk metallic glass
Density relaxation
Enthalpy relaxation
Free volume
Non-Debye function

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2006.02.325

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title = "The free volume kinetics during structural relaxation in bulk Pd-P based metallic glasses",

abstract = "Isothermal enthalpy relaxation and density relaxation were investigated for bulk Pd42.5Cu30Ni7.5P20 and Pd40Ni40P20 metallic glasses. The density was measured at room temperature after relaxing the sample for a given time. Enthalpy relaxation data of Pd42.5Cu30Ni7.5P20 glass and density relaxation data of Pd40Ni40P20 glass were well fitted by a non-Debye type relaxation function. A fit to a stretched exponential relaxation function of density relaxation data at 549 K of Pd40Ni40P20 glass gave the exponential index of 0.66. Isochoric Kauzmann temperature TK was estimated from density measurements for nearly fully relaxed bulk glasses and TK = 456 ± 10 K was obtained.",

keywords = "Bulk metallic glass, Density relaxation, Enthalpy relaxation, Free volume, Non-Debye function",

author = "O. Haruyama and H. Sakagami and N. Nishiyama and A. Inoue",

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doi = "10.1016/j.msea.2006.02.325",

language = "English",

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T1 - The free volume kinetics during structural relaxation in bulk Pd-P based metallic glasses

AU - Haruyama, O.

AU - Sakagami, H.

AU - Nishiyama, N.

AU - Inoue, A.

PY - 2007/3/25

Y1 - 2007/3/25

N2 - Isothermal enthalpy relaxation and density relaxation were investigated for bulk Pd42.5Cu30Ni7.5P20 and Pd40Ni40P20 metallic glasses. The density was measured at room temperature after relaxing the sample for a given time. Enthalpy relaxation data of Pd42.5Cu30Ni7.5P20 glass and density relaxation data of Pd40Ni40P20 glass were well fitted by a non-Debye type relaxation function. A fit to a stretched exponential relaxation function of density relaxation data at 549 K of Pd40Ni40P20 glass gave the exponential index of 0.66. Isochoric Kauzmann temperature TK was estimated from density measurements for nearly fully relaxed bulk glasses and TK = 456 ± 10 K was obtained.

AB - Isothermal enthalpy relaxation and density relaxation were investigated for bulk Pd42.5Cu30Ni7.5P20 and Pd40Ni40P20 metallic glasses. The density was measured at room temperature after relaxing the sample for a given time. Enthalpy relaxation data of Pd42.5Cu30Ni7.5P20 glass and density relaxation data of Pd40Ni40P20 glass were well fitted by a non-Debye type relaxation function. A fit to a stretched exponential relaxation function of density relaxation data at 549 K of Pd40Ni40P20 glass gave the exponential index of 0.66. Isochoric Kauzmann temperature TK was estimated from density measurements for nearly fully relaxed bulk glasses and TK = 456 ± 10 K was obtained.

KW - Bulk metallic glass

KW - Density relaxation

KW - Enthalpy relaxation

KW - Free volume

KW - Non-Debye function

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JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

ER -

The free volume kinetics during structural relaxation in bulk Pd-P based metallic glasses

Abstract

Keywords

ASJC Scopus subject areas

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