By differential scanning calorimetric measurement, the kinetics of the phase transformation present in Zr65Al7.5Ni10Cu12.5Ag5 bulk metallic glass during continuous heating was investigated. It was found that the effective activation energy from a supercooled liquid to an icosahedral quasicrystalline phase is much lower than that from the supercooled liquid to eutectic crystalline phases. In addition, the activation energy from the icosahedral phase to the crystalline phases is almost the same as that from the supercooled liquid to the crystalline phases. Both of them support that the local atomic structure is similar for the supercooled liquid and the icosahedral phase in the bulk metallic glass. (C) 2001 American Institute of Physics.
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Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R ChinaUniv Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
Hui, X.
Fang, H. Z.
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Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R ChinaUniv Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
Fang, H. Z.
Chen, G. L.
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Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R ChinaUniv Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
Chen, G. L.
Shang, S. L.
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Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USAUniv Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
Shang, S. L.
Wang, Y.
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Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USAUniv Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
Wang, Y.
Liu, Z. K.
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Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USAUniv Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China