Improvement of plasticity in Pd containing Zr-Al-Ni-Cu bulk metallic glass by deformation-induced nano structure change

Junji Saida; Albertus Deny Setyawan; Hidemi Kato; Mitsuhide Matsushita; Akihisa Inoue

doi:10.2320/matertrans.MER2008162

Improvement of plasticity in Pd containing Zr-Al-Ni-Cu bulk metallic glass by deformation-induced nano structure change

Junji Saida, Albertus Deny Setyawan, Hidemi Kato, Mitsuhide Matsushita, Akihisa Inoue

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

9 Citations (Scopus)

Abstract

We have prepared Zr-AI-Ni-Cu-Pd bulk metallic glasses (BMGs) cast in an ambient Ar atmosphere, in which the cooling effect is enhanced. The Zr ₆₅Al_7.5Ni₁₀Cu_17.5-xPd_x (x = 1-5) BMGs exhibit a good plasticity during the compressive deformation process. A significant plasticity of 6% plastic strain is obtained in the Zr₆₅Al_7.5Ni₁₀Cu_12.5Pd₅ BMG, where the deformation mode with multi shear bands appears near the fracture surface. Nanocrystalline particles are arranged in a band-like formation in the glassy matrix around the multi shear bands, indicating the restraint of shear band propagation owing to the dynamic precipitation of the nanocrystals. The unrelaxed structure owing to the higher cooling rate in the present condition may also contribute to the good plasticity.

Original language	English
Pages (from-to)	2732-2736
Number of pages	5
Journal	Materials Transactions
Volume	49
Issue number	11
DOIs	https://doi.org/10.2320/matertrans.MER2008162
Publication status	Published - 2008 Nov

Keywords

Casting
Deformation
Metallic glass
Nanocrystallization
Plasticity
Shear band
Structural relaxation

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.2320/matertrans.MER2008162

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title = "Improvement of plasticity in Pd containing Zr-Al-Ni-Cu bulk metallic glass by deformation-induced nano structure change",

abstract = "We have prepared Zr-AI-Ni-Cu-Pd bulk metallic glasses (BMGs) cast in an ambient Ar atmosphere, in which the cooling effect is enhanced. The Zr 65Al7.5Ni10Cu17.5-xPdx (x = 1-5) BMGs exhibit a good plasticity during the compressive deformation process. A significant plasticity of 6% plastic strain is obtained in the Zr65Al7.5Ni10Cu12.5Pd5 BMG, where the deformation mode with multi shear bands appears near the fracture surface. Nanocrystalline particles are arranged in a band-like formation in the glassy matrix around the multi shear bands, indicating the restraint of shear band propagation owing to the dynamic precipitation of the nanocrystals. The unrelaxed structure owing to the higher cooling rate in the present condition may also contribute to the good plasticity.",

keywords = "Casting, Deformation, Metallic glass, Nanocrystallization, Plasticity, Shear band, Structural relaxation",

author = "Junji Saida and Setyawan, {Albertus Deny} and Hidemi Kato and Mitsuhide Matsushita and Akihisa Inoue",

year = "2008",

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doi = "10.2320/matertrans.MER2008162",

language = "English",

volume = "49",

pages = "2732--2736",

journal = "Materials Transactions",

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publisher = "Japan Institute of Metals (JIM)",

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TY - JOUR

T1 - Improvement of plasticity in Pd containing Zr-Al-Ni-Cu bulk metallic glass by deformation-induced nano structure change

AU - Saida, Junji

AU - Setyawan, Albertus Deny

AU - Kato, Hidemi

AU - Matsushita, Mitsuhide

AU - Inoue, Akihisa

PY - 2008/11

Y1 - 2008/11

N2 - We have prepared Zr-AI-Ni-Cu-Pd bulk metallic glasses (BMGs) cast in an ambient Ar atmosphere, in which the cooling effect is enhanced. The Zr 65Al7.5Ni10Cu17.5-xPdx (x = 1-5) BMGs exhibit a good plasticity during the compressive deformation process. A significant plasticity of 6% plastic strain is obtained in the Zr65Al7.5Ni10Cu12.5Pd5 BMG, where the deformation mode with multi shear bands appears near the fracture surface. Nanocrystalline particles are arranged in a band-like formation in the glassy matrix around the multi shear bands, indicating the restraint of shear band propagation owing to the dynamic precipitation of the nanocrystals. The unrelaxed structure owing to the higher cooling rate in the present condition may also contribute to the good plasticity.

AB - We have prepared Zr-AI-Ni-Cu-Pd bulk metallic glasses (BMGs) cast in an ambient Ar atmosphere, in which the cooling effect is enhanced. The Zr 65Al7.5Ni10Cu17.5-xPdx (x = 1-5) BMGs exhibit a good plasticity during the compressive deformation process. A significant plasticity of 6% plastic strain is obtained in the Zr65Al7.5Ni10Cu12.5Pd5 BMG, where the deformation mode with multi shear bands appears near the fracture surface. Nanocrystalline particles are arranged in a band-like formation in the glassy matrix around the multi shear bands, indicating the restraint of shear band propagation owing to the dynamic precipitation of the nanocrystals. The unrelaxed structure owing to the higher cooling rate in the present condition may also contribute to the good plasticity.

KW - Casting

KW - Deformation

KW - Metallic glass

KW - Nanocrystallization

KW - Plasticity

KW - Shear band

KW - Structural relaxation

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U2 - 10.2320/matertrans.MER2008162

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SN - 1345-9678

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JO - Materials Transactions

JF - Materials Transactions

IS - 11

ER -

Improvement of plasticity in Pd containing Zr-Al-Ni-Cu bulk metallic glass by deformation-induced nano structure change

Abstract

Keywords

ASJC Scopus subject areas

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