Thermal stability of (Ce0.72Cu0.28)90-xAl10Fex (x = 0, 5 or 10) bulk metallic glasses

J. C. Qiao; J. M. Pelletier

doi:10.1002/pssc.201000713

Thermal stability of (Ce_0.72Cu_0.28)_90-xAl₁₀Fe_x (x = 0, 5 or 10) bulk metallic glasses

J. C. Qiao, J. M. Pelletier

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

4 Scopus citations

Abstract

Thermal stability of (Ce_0.72Cu_0.28)_90-xAl₁₀Fe_x (x= 0, 5 or 10) bulk metallic glasses (BMGs) was analyzed by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). Temperatures corresponding to glass transition (T_g), onset of crystallization (T_x) and crystallization peak (T_p) shift to higher temperature by increasing the Fe content. Kissinger model allows calculating the effective activation energy E_a of the crystallization process. For the first crystalline peak, energies are 1.47 eV, 1.50 eV and 1.58 eV for x = 0, 5 and 10, respectively, implying that effective activation energy E_aof the crystallization process increases by increasing the Fe content. In the iron-free alloy, a second crystalline peak is observed, with activation energy of 2.3 eV. Influence of microstructure modifications on elastic and viscoelastic properties was investigated by dynamic mechanical analysis (DMA).

Original language	English
Pages (from-to)	3074-3077
Number of pages	4
Journal	Physica Status Solidi (C) Current Topics in Solid State Physics
Volume	8
Issue number	11-12
DOIs	https://doi.org/10.1002/pssc.201000713
State	Published - Nov 2011
Externally published	Yes

Keywords

Activation energy
Bulk metallic glass
Crystallization
Differential scanning calorimetry
Dynamic mechanical analysis
Kissinger model
Thermal stability
X-ray diffraction

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10.1002/pssc.201000713

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title = "Thermal stability of (Ce0.72Cu0.28)90-xAl10Fex (x = 0, 5 or 10) bulk metallic glasses",

abstract = "Thermal stability of (Ce0.72Cu0.28)90-xAl10Fex (x= 0, 5 or 10) bulk metallic glasses (BMGs) was analyzed by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). Temperatures corresponding to glass transition (Tg), onset of crystallization (Tx) and crystallization peak (Tp) shift to higher temperature by increasing the Fe content. Kissinger model allows calculating the effective activation energy Ea of the crystallization process. For the first crystalline peak, energies are 1.47 eV, 1.50 eV and 1.58 eV for x = 0, 5 and 10, respectively, implying that effective activation energy Eaof the crystallization process increases by increasing the Fe content. In the iron-free alloy, a second crystalline peak is observed, with activation energy of 2.3 eV. Influence of microstructure modifications on elastic and viscoelastic properties was investigated by dynamic mechanical analysis (DMA).",

keywords = "Activation energy, Bulk metallic glass, Crystallization, Differential scanning calorimetry, Dynamic mechanical analysis, Kissinger model, Thermal stability, X-ray diffraction",

author = "Qiao, {J. C.} and Pelletier, {J. M.}",

year = "2011",

month = nov,

doi = "10.1002/pssc.201000713",

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volume = "8",

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AU - Qiao, J. C.

AU - Pelletier, J. M.

PY - 2011/11

Y1 - 2011/11

N2 - Thermal stability of (Ce0.72Cu0.28)90-xAl10Fex (x= 0, 5 or 10) bulk metallic glasses (BMGs) was analyzed by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). Temperatures corresponding to glass transition (Tg), onset of crystallization (Tx) and crystallization peak (Tp) shift to higher temperature by increasing the Fe content. Kissinger model allows calculating the effective activation energy Ea of the crystallization process. For the first crystalline peak, energies are 1.47 eV, 1.50 eV and 1.58 eV for x = 0, 5 and 10, respectively, implying that effective activation energy Eaof the crystallization process increases by increasing the Fe content. In the iron-free alloy, a second crystalline peak is observed, with activation energy of 2.3 eV. Influence of microstructure modifications on elastic and viscoelastic properties was investigated by dynamic mechanical analysis (DMA).

AB - Thermal stability of (Ce0.72Cu0.28)90-xAl10Fex (x= 0, 5 or 10) bulk metallic glasses (BMGs) was analyzed by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). Temperatures corresponding to glass transition (Tg), onset of crystallization (Tx) and crystallization peak (Tp) shift to higher temperature by increasing the Fe content. Kissinger model allows calculating the effective activation energy Ea of the crystallization process. For the first crystalline peak, energies are 1.47 eV, 1.50 eV and 1.58 eV for x = 0, 5 and 10, respectively, implying that effective activation energy Eaof the crystallization process increases by increasing the Fe content. In the iron-free alloy, a second crystalline peak is observed, with activation energy of 2.3 eV. Influence of microstructure modifications on elastic and viscoelastic properties was investigated by dynamic mechanical analysis (DMA).

KW - Activation energy

KW - Bulk metallic glass

KW - Crystallization

KW - Differential scanning calorimetry

KW - Dynamic mechanical analysis

KW - Kissinger model

KW - Thermal stability

KW - X-ray diffraction

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JO - Physica Status Solidi (C) Current Topics in Solid State Physics

JF - Physica Status Solidi (C) Current Topics in Solid State Physics

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ER -

Thermal stability of (Ce_0.72Cu_0.28)_90-xAl₁₀Fe_x (x = 0, 5 or 10) bulk metallic glasses

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