TY - JOUR
T1 - Structural relaxation, glass transition, viscous formability, and crystallization of Zr-Cu-based bulk metallic glasses on heating
AU - Louzguine-Luzgin, Dmitri V.
AU - Seki, Ichiro
AU - Wada, Takeshi
AU - Inoue, Akihisa
N1 - Funding Information:
This work was partly supported by the Research and Development Project on Advanced Metallic Glasses, Inorganic Materials and Joining Technology, as well as by Grant-in-Aid ‘‘Priority Area on Science and Technology of Microwave-Induced, Thermally Non-Equilibrium Reaction Field’’ No. 18070001 from the Ministry of Education, Culture, Sports, Science and Technology, Japan. We also thank Dr. Hayasaka, High-Voltage Microscopy Center, for the TITAN microscope observations. We further thank Dr. Y. Hayasaka for the FEI TITAN 80-300 scanning transmission electron microscope observations.
PY - 2012/8
Y1 - 2012/8
N2 - In this article, we summarize our recent findings on relaxation, glass transition, viscous flow, and crystallization of Zr-Cu-based metallic glasses on heating. At least two processes related to the diffusivities of different alloying elements take place in the glass-transition region of a Zr-Cu- Al-Ni glassy alloy. Also, we report an unusual solidification behavior of the bulk glassy alloy produced using low-purity Zr in which both primary and eutectic-type structural constituents were formed simultaneously during solidification of the melt. In addition, viscous flow and structure changes in the Zr-Cu-Al-Ag glassy alloy are examined in both the glass-transition and supercooled liquid regions. This alloy is found to exhibit localized phase separation leading to nanocrystallization before massive crystallization of the entire sample.
AB - In this article, we summarize our recent findings on relaxation, glass transition, viscous flow, and crystallization of Zr-Cu-based metallic glasses on heating. At least two processes related to the diffusivities of different alloying elements take place in the glass-transition region of a Zr-Cu- Al-Ni glassy alloy. Also, we report an unusual solidification behavior of the bulk glassy alloy produced using low-purity Zr in which both primary and eutectic-type structural constituents were formed simultaneously during solidification of the melt. In addition, viscous flow and structure changes in the Zr-Cu-Al-Ag glassy alloy are examined in both the glass-transition and supercooled liquid regions. This alloy is found to exhibit localized phase separation leading to nanocrystallization before massive crystallization of the entire sample.
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U2 - 10.1007/s11661-011-1005-4
DO - 10.1007/s11661-011-1005-4
M3 - Article
AN - SCOPUS:84864582975
SN - 1073-5623
VL - 43
SP - 2642
EP - 2648
JO - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
JF - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
IS - 8
ER -