Plasticity enhancement of Zr-based bulk metallic glasses by direct current electropulsing

P. Yiu; J. S.C. Jang; S. Y. Chang; Y. C. Chen; J. P. Chu; C. H. Hsueh

doi:10.1016/j.jallcom.2012.02.074

Plasticity enhancement of Zr-based bulk metallic glasses by direct current electropulsing

P. Yiu, J. S.C. Jang, S. Y. Chang, Y. C. Chen, J. P. Chu, C. H. Hsueh

材料科學與工程研究所

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

19 引文斯高帕斯（Scopus）

摘要

Direct current electropulsing was used to improve the plasticity of (Zr ₅₃Cu ₃₀Ni ₉Al ₈) _99.5Si _0.5 bulk metallic glasses. After the electropulsing treatment, the specimen showed reductions in both the glass transition and the crystallization temperatures while retaining its amorphous structure, and both Young's modulus and the hardness decreased while the nanoindentation loading curve became more serrated. Using the bond-interface method and Vickers indentation, the treated specimen showed more branching of semi-circular shear bands and less radial shear bands compared to its as-cast counterpart. The possible plasticity enhancement mechanism of the electropulsing treatment was also discussed.

原文	???core.languages.en_GB???
頁（從 - 到）	68-72
頁數	5
期刊	Journal of Alloys and Compounds
卷	525
DOIs	https://doi.org/10.1016/j.jallcom.2012.02.074
出版狀態	已出版 - 5 6月 2012

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10.1016/j.jallcom.2012.02.074

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title = "Plasticity enhancement of Zr-based bulk metallic glasses by direct current electropulsing",

abstract = "Direct current electropulsing was used to improve the plasticity of (Zr 53Cu 30Ni 9Al 8) 99.5Si 0.5 bulk metallic glasses. After the electropulsing treatment, the specimen showed reductions in both the glass transition and the crystallization temperatures while retaining its amorphous structure, and both Young's modulus and the hardness decreased while the nanoindentation loading curve became more serrated. Using the bond-interface method and Vickers indentation, the treated specimen showed more branching of semi-circular shear bands and less radial shear bands compared to its as-cast counterpart. The possible plasticity enhancement mechanism of the electropulsing treatment was also discussed.",

keywords = "Amorphous materials, Electropulsing, Mechanical properties, Metallic glasses, Nanoindentation, Shear band",

author = "P. Yiu and Jang, {J. S.C.} and Chang, {S. Y.} and Chen, {Y. C.} and Chu, {J. P.} and Hsueh, {C. H.}",

note = "Funding Information: This project was supported by National Science Council, Taiwan under contract no. NSC100-2218-E-002-014. The authors would also like to acknowledge Dr. C.H. Shek of the City University of Hong Kong for his assistance on electropulsing equipment.",

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AU - Yiu, P.

AU - Jang, J. S.C.

AU - Chang, S. Y.

AU - Chen, Y. C.

AU - Chu, J. P.

AU - Hsueh, C. H.

N1 - Funding Information: This project was supported by National Science Council, Taiwan under contract no. NSC100-2218-E-002-014. The authors would also like to acknowledge Dr. C.H. Shek of the City University of Hong Kong for his assistance on electropulsing equipment.

PY - 2012/6/5

Y1 - 2012/6/5

N2 - Direct current electropulsing was used to improve the plasticity of (Zr 53Cu 30Ni 9Al 8) 99.5Si 0.5 bulk metallic glasses. After the electropulsing treatment, the specimen showed reductions in both the glass transition and the crystallization temperatures while retaining its amorphous structure, and both Young's modulus and the hardness decreased while the nanoindentation loading curve became more serrated. Using the bond-interface method and Vickers indentation, the treated specimen showed more branching of semi-circular shear bands and less radial shear bands compared to its as-cast counterpart. The possible plasticity enhancement mechanism of the electropulsing treatment was also discussed.

AB - Direct current electropulsing was used to improve the plasticity of (Zr 53Cu 30Ni 9Al 8) 99.5Si 0.5 bulk metallic glasses. After the electropulsing treatment, the specimen showed reductions in both the glass transition and the crystallization temperatures while retaining its amorphous structure, and both Young's modulus and the hardness decreased while the nanoindentation loading curve became more serrated. Using the bond-interface method and Vickers indentation, the treated specimen showed more branching of semi-circular shear bands and less radial shear bands compared to its as-cast counterpart. The possible plasticity enhancement mechanism of the electropulsing treatment was also discussed.

KW - Amorphous materials

KW - Electropulsing

KW - Mechanical properties

KW - Metallic glasses

KW - Nanoindentation

KW - Shear band

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SN - 0925-8388

VL - 525

SP - 68

EP - 72

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Plasticity enhancement of Zr-based bulk metallic glasses by direct current electropulsing

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