Molecular Dynamics Study on Structural Relaxation of Metallic Glasses
2010 ◽
Vol 638-642
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pp. 1648-1652
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Keyword(s):
Structural relaxation process in the Zr-Cu metallic glasses is investigated by using molecular dynamics simulations. The enthalpy change in isothermal annealing of the glassy state cannot be fitted by a simple exponential function but obeys a stretched exponential function, which indicates that the relaxation in glassy phase is not a single Debye type process. A close examination of individual atomic motion reveals that the enthalpy relaxation is related to a string-like cooperative motion of atoms. The analysis of the local symmetry around each atom shows that a network of the icosahedral clusters grows in the glassy phases during annealing and it closely relates to the free-volume annihilation in the structural relaxation.
2015 ◽
Vol 17
(40)
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pp. 27127-27135
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Keyword(s):
2004 ◽
Vol 76
(1)
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pp. 215-221
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2018 ◽
Vol 53
(16)
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pp. 11488-11499
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Keyword(s):
2019 ◽
Vol 119
◽
pp. 1-20
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2010 ◽
Vol 25
(9)
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pp. 1679-1688
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2009 ◽
Vol 483
(1-2)
◽
pp. 102-106
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