Rheology and nano-crystallization of aZr41.25Ti13.75Ni10Cu12.5Be22.5 bulk metallic glass

G. Wang; I. Jackson; J. D. Fitz Gerald; J. Shen; Z. H. Stachurski

doi:10.1016/j.jnoncrysol.2007.10.029

Rheology and nano-crystallization of aZr_41.25Ti_13.75Ni₁₀Cu_12.5Be_22.5 bulk metallic glass

G. Wang, I. Jackson, J. D. Fitz Gerald, J. Shen, Z. H. Stachurski^*

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

Creep of Zr-based bulk metallic glass (BMG) was carried out under hydrostatic pressure of 270 MPa superimposed on uniaxial compressive loads of 30-300 MPa. The temperature of testing was maintained at 633 K, which is close to the glass transition temperature of the BMG. The samples had heat treatment at 676 K for different lengths of time applied prior to testing, which resulted in microstructural changes. Apparent viscosity during flow was derived from the creep measurements. The effect of crystalline volume fraction, temperature, and strain rate are considered. Finally, we have constructed a TTT diagram for this BMG spanning almost three decades of time and 650-690 K temperature range, showing transformation from glassy to crystalline solid as a function of volume fraction.

Original language	English
Pages (from-to)	1575-1581
Number of pages	7
Journal	Journal of Non-Crystalline Solids
Volume	354
Issue number	15-16
DOIs	https://doi.org/10.1016/j.jnoncrysol.2007.10.029
Publication status	Published - 15 Mar 2008

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title = "Rheology and nano-crystallization of aZr41.25Ti13.75Ni10Cu12.5Be22.5 bulk metallic glass",

abstract = "Creep of Zr-based bulk metallic glass (BMG) was carried out under hydrostatic pressure of 270 MPa superimposed on uniaxial compressive loads of 30-300 MPa. The temperature of testing was maintained at 633 K, which is close to the glass transition temperature of the BMG. The samples had heat treatment at 676 K for different lengths of time applied prior to testing, which resulted in microstructural changes. Apparent viscosity during flow was derived from the creep measurements. The effect of crystalline volume fraction, temperature, and strain rate are considered. Finally, we have constructed a TTT diagram for this BMG spanning almost three decades of time and 650-690 K temperature range, showing transformation from glassy to crystalline solid as a function of volume fraction.",

keywords = "61.43.Fs, 62.20.Hg, 83.60.Rs, Amorphous metals, Creep, Crystal growth, Glass transition, Metallic glasses, Nanocrystals, Rheology",

author = "G. Wang and I. Jackson and {Fitz Gerald}, {J. D.} and J. Shen and Stachurski, {Z. H.}",

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T1 - Rheology and nano-crystallization of aZr41.25Ti13.75Ni10Cu12.5Be22.5 bulk metallic glass

AU - Wang, G.

AU - Jackson, I.

AU - Fitz Gerald, J. D.

AU - Shen, J.

AU - Stachurski, Z. H.

PY - 2008/3/15

Y1 - 2008/3/15

N2 - Creep of Zr-based bulk metallic glass (BMG) was carried out under hydrostatic pressure of 270 MPa superimposed on uniaxial compressive loads of 30-300 MPa. The temperature of testing was maintained at 633 K, which is close to the glass transition temperature of the BMG. The samples had heat treatment at 676 K for different lengths of time applied prior to testing, which resulted in microstructural changes. Apparent viscosity during flow was derived from the creep measurements. The effect of crystalline volume fraction, temperature, and strain rate are considered. Finally, we have constructed a TTT diagram for this BMG spanning almost three decades of time and 650-690 K temperature range, showing transformation from glassy to crystalline solid as a function of volume fraction.

AB - Creep of Zr-based bulk metallic glass (BMG) was carried out under hydrostatic pressure of 270 MPa superimposed on uniaxial compressive loads of 30-300 MPa. The temperature of testing was maintained at 633 K, which is close to the glass transition temperature of the BMG. The samples had heat treatment at 676 K for different lengths of time applied prior to testing, which resulted in microstructural changes. Apparent viscosity during flow was derived from the creep measurements. The effect of crystalline volume fraction, temperature, and strain rate are considered. Finally, we have constructed a TTT diagram for this BMG spanning almost three decades of time and 650-690 K temperature range, showing transformation from glassy to crystalline solid as a function of volume fraction.

KW - 61.43.Fs

KW - 62.20.Hg

KW - 83.60.Rs

KW - Amorphous metals

KW - Creep

KW - Crystal growth

KW - Glass transition

KW - Metallic glasses

KW - Nanocrystals

KW - Rheology

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DO - 10.1016/j.jnoncrysol.2007.10.029

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JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

IS - 15-16

ER -

Rheology and nano-crystallization of aZr_41.25Ti_13.75Ni₁₀Cu_12.5Be_22.5 bulk metallic glass

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