Influence of the Ag concentration on the medium-range order in a CuZrAlAg bulk metallic glass

Christoph Gammer; B. Escher; Christian Ebner; A. M. Minor; H. P. Karnthaler; J. Eckert; S. Pauly; C. Rentenberger

doi:10.1038/srep44903

Influence of the Ag concentration on the medium-range order in a CuZrAlAg bulk metallic glass

Christoph Gammer
, B. Escher
, Christian Ebner
, A. M. Minor
, H. P. Karnthaler
, J. Eckert
, S. Pauly
, C. Rentenberger

Physics of Nanostructured Materials

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

Fluctuation electron microscopy of bulk metallic glasses of CuZrAl(Ag) demonstrates that medium-range order is sensitive to minor compositional changes. By analyzing nanodiffraction patterns medium-range order is detected with crystal-like motifs based on the B2 CuZr structure and its distorted structures resembling the martensitic ones. This result demonstrates some structural homology between the metallic glass and its high temperature crystalline phase. The amount of medium-range order seems slightly affected with increasing Ag concentration (0, 2, 5 at.%) but the structural motifs of the medium-range ordered clusters become more diverse at the highest Ag concentration. The decrease of dominant clusters is consistent with the destabilization of the B2 structure measured by calorimetry and accounts for the increased glass-forming ability.

Original language	English
Article number	44903
Number of pages	7
Journal	Scientific Reports
Volume	7
DOIs	https://doi.org/10.1038/srep44903
Publication status	Published - 21 Mar 2017

Funding

The work was supported by the Austrian Science Fund (FWF):[I1309, J3397], the German Science Foundation (DFG) (grant: PA 2275/2-1), the Leibniz Program (grant EC 111/26-1) and the European Research Council under the ERC Advanced Grant INTELHYB (grant ERC-2013-ADG-340025). The authors acknowledge support by the Molecular Foundry, Lawrence Berkeley National Laboratory, supported by the U.S. Dept. of Energy under Contract # DE-AC02-05CH11231. Stimulating discussions with L.B. Bruno as well as experimental support by K.B. Bustillo is highly appreciated.

Austrian Fields of Science 2012

103042 Electron microscopy
103018 Materials physics

Keywords

CU-ZR-AL
FLUCTUATION ELECTRON-MICROSCOPY
FORMING-ABILITY
MECHANICAL-PROPERTIES
TRANSFORMATION
ADDITIONS
ALLOYS
COMPOSITE
DUCTILITY

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10.1038/srep44903Licence: CC BY 4.0

http://phaidra.univie.ac.at/o:705764Licence: CC BY 4.0

Cite this

@article{d49d22d82f3c439282c7f4685ff69255,

title = "Influence of the Ag concentration on the medium-range order in a CuZrAlAg bulk metallic glass",

abstract = "Fluctuation electron microscopy of bulk metallic glasses of CuZrAl(Ag) demonstrates that medium-range order is sensitive to minor compositional changes. By analyzing nanodiffraction patterns medium-range order is detected with crystal-like motifs based on the B2 CuZr structure and its distorted structures resembling the martensitic ones. This result demonstrates some structural homology between the metallic glass and its high temperature crystalline phase. The amount of medium-range order seems slightly affected with increasing Ag concentration (0, 2, 5 at.\%) but the structural motifs of the medium-range ordered clusters become more diverse at the highest Ag concentration. The decrease of dominant clusters is consistent with the destabilization of the B2 structure measured by calorimetry and accounts for the increased glass-forming ability.",

keywords = "CU-ZR-AL, FLUCTUATION ELECTRON-MICROSCOPY, FORMING-ABILITY, MECHANICAL-PROPERTIES, TRANSFORMATION, ADDITIONS, ALLOYS, COMPOSITE, DUCTILITY",

author = "Christoph Gammer and B. Escher and Christian Ebner and Minor, \{A. M.\} and Karnthaler, \{H. P.\} and J. Eckert and S. Pauly and C. Rentenberger",

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year = "2017",

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day = "21",

doi = "10.1038/srep44903",

language = "English",

volume = "7",

journal = "Scientific Reports",

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T1 - Influence of the Ag concentration on the medium-range order in a CuZrAlAg bulk metallic glass

AU - Gammer, Christoph

AU - Escher, B.

AU - Ebner, Christian

AU - Minor, A. M.

AU - Karnthaler, H. P.

AU - Eckert, J.

AU - Pauly, S.

AU - Rentenberger, C.

PY - 2017/3/21

Y1 - 2017/3/21

N2 - Fluctuation electron microscopy of bulk metallic glasses of CuZrAl(Ag) demonstrates that medium-range order is sensitive to minor compositional changes. By analyzing nanodiffraction patterns medium-range order is detected with crystal-like motifs based on the B2 CuZr structure and its distorted structures resembling the martensitic ones. This result demonstrates some structural homology between the metallic glass and its high temperature crystalline phase. The amount of medium-range order seems slightly affected with increasing Ag concentration (0, 2, 5 at.%) but the structural motifs of the medium-range ordered clusters become more diverse at the highest Ag concentration. The decrease of dominant clusters is consistent with the destabilization of the B2 structure measured by calorimetry and accounts for the increased glass-forming ability.

AB - Fluctuation electron microscopy of bulk metallic glasses of CuZrAl(Ag) demonstrates that medium-range order is sensitive to minor compositional changes. By analyzing nanodiffraction patterns medium-range order is detected with crystal-like motifs based on the B2 CuZr structure and its distorted structures resembling the martensitic ones. This result demonstrates some structural homology between the metallic glass and its high temperature crystalline phase. The amount of medium-range order seems slightly affected with increasing Ag concentration (0, 2, 5 at.%) but the structural motifs of the medium-range ordered clusters become more diverse at the highest Ag concentration. The decrease of dominant clusters is consistent with the destabilization of the B2 structure measured by calorimetry and accounts for the increased glass-forming ability.

KW - CU-ZR-AL

KW - FLUCTUATION ELECTRON-MICROSCOPY

KW - FORMING-ABILITY

KW - MECHANICAL-PROPERTIES

KW - TRANSFORMATION

KW - ADDITIONS

KW - ALLOYS

KW - COMPOSITE

KW - DUCTILITY

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VL - 7

JO - Scientific Reports

JF - Scientific Reports

M1 - 44903

ER -

Influence of the Ag concentration on the medium-range order in a CuZrAlAg bulk metallic glass

Abstract

Funding

Austrian Fields of Science 2012

Keywords

Access to Document

Other files and links

Structural inhomogeneities in bulk metallic glasses

Cite this

Influence of the Ag concentration on the medium-range order in a CuZrAlAg bulk metallic glass

Abstract

Funding

Austrian Fields of Science 2012

Keywords

Access to Document

Other files and links

Projects

Structural inhomogeneities in bulk metallic glasses

Cite this