Induced elastic anisotropy in a bulk metallic glass

A. Concustell; S. Godard-Desmarest; M. A. Carpenter; N. Nishiyama; A. L. Greer

doi:10.1016/j.scriptamat.2011.02.028

Induced elastic anisotropy in a bulk metallic glass

A. Concustell, S. Godard-Desmarest, M. A. Carpenter, N. Nishiyama, A. L. Greer

Institute for Materials Research (IMR)

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

32 Citations (Scopus)

Abstract

Full evaluation of the elasticity tensor of a bulk metallic glass (Pd ₄₀Cu₃₀Ni₁₀P₂₀) shows anisotropy induced by creep under uniaxial compression changing sign with increasing strain. Anisotropy due to anelastic strain is erased by zero stress annealing. At higher strain anisotropy of opposite sign suggests structural alignment by plastic flow. Induced anisotropy is most evident in the Poisson ratio, may relate to other properties, including the strength and toughness of metallic glasses, and may lead to misinterpretation of annealing effects.

Original language	English
Pages (from-to)	1091-1094
Number of pages	4
Journal	Scripta Materialia
Volume	64
Issue number	12
DOIs	https://doi.org/10.1016/j.scriptamat.2011.02.028
Publication status	Published - 2011 Jun

Keywords

Acoustic methods
Anisotropy
Bulk metallic glass
Creep
Elastic behavior

ASJC Scopus subject areas

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

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10.1016/j.scriptamat.2011.02.028

Cite this

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title = "Induced elastic anisotropy in a bulk metallic glass",

abstract = "Full evaluation of the elasticity tensor of a bulk metallic glass (Pd 40Cu30Ni10P20) shows anisotropy induced by creep under uniaxial compression changing sign with increasing strain. Anisotropy due to anelastic strain is erased by zero stress annealing. At higher strain anisotropy of opposite sign suggests structural alignment by plastic flow. Induced anisotropy is most evident in the Poisson ratio, may relate to other properties, including the strength and toughness of metallic glasses, and may lead to misinterpretation of annealing effects.",

keywords = "Acoustic methods, Anisotropy, Bulk metallic glass, Creep, Elastic behavior",

author = "A. Concustell and S. Godard-Desmarest and Carpenter, {M. A.} and N. Nishiyama and Greer, {A. L.}",

note = "Funding Information: Support is acknowledged for A.C. from MICINN Spain (Grant No. EX-2007-0391 ) and for M.A.C. from NERC, UK (Grant No. NE/B505738/1 ) for RUS facilities.",

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AU - Concustell, A.

AU - Godard-Desmarest, S.

AU - Carpenter, M. A.

AU - Nishiyama, N.

AU - Greer, A. L.

N1 - Funding Information: Support is acknowledged for A.C. from MICINN Spain (Grant No. EX-2007-0391 ) and for M.A.C. from NERC, UK (Grant No. NE/B505738/1 ) for RUS facilities.

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N2 - Full evaluation of the elasticity tensor of a bulk metallic glass (Pd 40Cu30Ni10P20) shows anisotropy induced by creep under uniaxial compression changing sign with increasing strain. Anisotropy due to anelastic strain is erased by zero stress annealing. At higher strain anisotropy of opposite sign suggests structural alignment by plastic flow. Induced anisotropy is most evident in the Poisson ratio, may relate to other properties, including the strength and toughness of metallic glasses, and may lead to misinterpretation of annealing effects.

AB - Full evaluation of the elasticity tensor of a bulk metallic glass (Pd 40Cu30Ni10P20) shows anisotropy induced by creep under uniaxial compression changing sign with increasing strain. Anisotropy due to anelastic strain is erased by zero stress annealing. At higher strain anisotropy of opposite sign suggests structural alignment by plastic flow. Induced anisotropy is most evident in the Poisson ratio, may relate to other properties, including the strength and toughness of metallic glasses, and may lead to misinterpretation of annealing effects.

KW - Acoustic methods

KW - Anisotropy

KW - Bulk metallic glass

KW - Creep

KW - Elastic behavior

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Induced elastic anisotropy in a bulk metallic glass

Abstract

Keywords

ASJC Scopus subject areas

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