TY - JOUR
T1 - He ion irradiation induced nanocrystallization in Cu50Zr45Ti5 glassy alloy
AU - Xie, Guoqiang
AU - Shao, Lin
AU - Louzguine-Luzgin, Dmitri V.
AU - Inoue, Akihisa
N1 - Funding Information:
The work was supported by a Grant-In-Aid for Science Research in a priority Area on “Research and Development Project on Advanced Materials Development and Integration of Novel Structured Metallic and Inorganic Materials”, and by Grant-In-Aid for Scientific Research (C) (No. 20560639 ), 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 . L. Shao acknowledges the support from NSF (US) Early Career Award CMMI-0846835 .
PY - 2011/11/25
Y1 - 2011/11/25
N2 - Partial nanocrystallization induced by ion irradiation can be used to improve the surface properties in metallic glasses. We investigated the crystallization behavior and the structure of the formed nanocrystalline phases in a melt-spun Cu50Zr45Ti5 glassy alloy irradiated with 140keV He ions to a fluence of 1.7×1017/cm2. Crystalline nanoparticles were precipitated by He ion irradiation. The nanocrystalline phases were identified as a mixture of the orthorhombic Cu10Zr7 phase, tetragonal CuZr2 phase and monoclinic CuZr phase. Hardness enhancement was observed at a depth close to the projected range of the He ions, which was related to the formation of the crystalline nanoparticles.
AB - Partial nanocrystallization induced by ion irradiation can be used to improve the surface properties in metallic glasses. We investigated the crystallization behavior and the structure of the formed nanocrystalline phases in a melt-spun Cu50Zr45Ti5 glassy alloy irradiated with 140keV He ions to a fluence of 1.7×1017/cm2. Crystalline nanoparticles were precipitated by He ion irradiation. The nanocrystalline phases were identified as a mixture of the orthorhombic Cu10Zr7 phase, tetragonal CuZr2 phase and monoclinic CuZr phase. Hardness enhancement was observed at a depth close to the projected range of the He ions, which was related to the formation of the crystalline nanoparticles.
KW - Characterization
KW - Ion irradiation
KW - Metallic glass
KW - Nanocrystallization
KW - Transmission electron microscopy
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U2 - 10.1016/j.surfcoat.2011.04.002
DO - 10.1016/j.surfcoat.2011.04.002
M3 - Article
AN - SCOPUS:80055112563
VL - 206
SP - 829
EP - 833
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
IS - 5
ER -