TY - JOUR
T1 - Elastic and viscoelastic properties of glassy, quasicrystalline and crystalline phases in Zr65Cu5Ni10Al 7.5Pd12.5 alloys
AU - Pelletier, Jean Marc
AU - Louzguine-Luzgin, Dmitri V.
AU - Li, Song
AU - Inoue, Akihisa
N1 - Funding Information:
This work was supported by the “Research and Development Project on Advanced Metallic Glasses, Inorganic Materials and Joining Technology”, and by Grant-in-Aid “Priority Area on Science and Technology of Microwave-Induced, Thermally Non-Equilibrium Reaction Field” of Ministry of Education, Sports, Culture, Science and Technology, Japan.
PY - 2011/4
Y1 - 2011/4
N2 - The elastic and viscoelastic properties of Zr65Ni 10Cu5Al7.5Pd12.5 bulk metallic glass have been studied over a wide temperature and frequency range. In the amorphous state the mechanical response of the alloy is simple, similar to that observed in other bulk metallic glasses. In contrast, the phase-transformation process which occurs during annealing at elevated temperature induces a complex evolution. This alloy transforms to a supercooled liquid and then primarily forms an icosahedral phase followed by the formation of a mixture of crystalline phases. The mechanical properties in the amorphous state are well described using a physical model based on the concept of defects in amorphous materials. Atomic mobility is then governed by two parameters: activation energy U el (0.92 eV) and correlation factor χ (0.39). The influence of the phase composition on the properties is discussed.
AB - The elastic and viscoelastic properties of Zr65Ni 10Cu5Al7.5Pd12.5 bulk metallic glass have been studied over a wide temperature and frequency range. In the amorphous state the mechanical response of the alloy is simple, similar to that observed in other bulk metallic glasses. In contrast, the phase-transformation process which occurs during annealing at elevated temperature induces a complex evolution. This alloy transforms to a supercooled liquid and then primarily forms an icosahedral phase followed by the formation of a mixture of crystalline phases. The mechanical properties in the amorphous state are well described using a physical model based on the concept of defects in amorphous materials. Atomic mobility is then governed by two parameters: activation energy U el (0.92 eV) and correlation factor χ (0.39). The influence of the phase composition on the properties is discussed.
KW - Bulk metallic glasses
KW - Dynamic mechanical analysis
KW - Elastic behaviour
KW - Phase transformations
KW - Viscoelastic behaviour
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U2 - 10.1016/j.actamat.2011.01.018
DO - 10.1016/j.actamat.2011.01.018
M3 - Article
AN - SCOPUS:79952360868
VL - 59
SP - 2797
EP - 2806
JO - Acta Materialia
JF - Acta Materialia
SN - 1359-6454
IS - 7
ER -