He ion irradiation induced nanocrystallization in Cu50Zr45Ti5 glassy alloy

Guoqiang Xie; Lin Shao; Dmitri V. Louzguine-Luzgin; Akihisa Inoue

doi:10.1016/j.surfcoat.2011.04.002

He ion irradiation induced nanocrystallization in Cu50Zr45Ti5 glassy alloy

Guoqiang Xie, Lin Shao, Dmitri V. Louzguine-Luzgin, Akihisa Inoue

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	829-833
Number of pages	5
Journal	Surface and Coatings Technology
Volume	206
Issue number	5
DOIs	https://doi.org/10.1016/j.surfcoat.2011.04.002
Publication status	Published - 2011 Nov 25

Keywords

Characterization
Ion irradiation
Metallic glass
Nanocrystallization
Transmission electron microscopy

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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title = "He ion irradiation induced nanocrystallization in Cu50Zr45Ti5 glassy alloy",

abstract = "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.",

keywords = "Characterization, Ion irradiation, Metallic glass, Nanocrystallization, Transmission electron microscopy",

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AU - Xie, Guoqiang

AU - Shao, Lin

AU - Louzguine-Luzgin, Dmitri V.

AU - Inoue, Akihisa

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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