Pronounced tensile plasticity at room temperature in a Au65Cu10.5Ag7.5Si17 metallic glass

J. C. Qiao; H. Wang; J. M. Pelletier; H. Kato

doi:10.1016/j.msea.2014.02.007

Pronounced tensile plasticity at room temperature in a Au₆₅Cu_10.5Ag_7.5Si₁₇ metallic glass

J. C. Qiao, H. Wang, J. M. Pelletier, H. Kato

Materials Development Division

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

4 Citations (Scopus)

Abstract

We report a pronounced tensile plasticity in a Au₆₅Cu_10.5Ag_7.5Si₁₇ metallic glass at room temperature. The tensile strength of the metallic glass decreases by decreasing the strain rate. Plastic deformation is heterogeneous and many percolating shear bands are observed on the fracture surface. In parallel, dynamic mechanical analysis indicates the absence of a pronounced secondary (or β) relaxation. Therefore, no correlation is observed between the relaxation behavior and the tensile plasticity.

Original language	English
Pages (from-to)	32-36
Number of pages	5
Journal	Materials Science and Engineering A
Volume	600
DOIs	https://doi.org/10.1016/j.msea.2014.02.007
Publication status	Published - 2014 Apr 10

Keywords

Bulk amorphous alloys
Shear bands
Superplasticity

ASJC Scopus subject areas

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

Access to Document

10.1016/j.msea.2014.02.007

Cite this

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title = "Pronounced tensile plasticity at room temperature in a Au65Cu10.5Ag7.5Si17 metallic glass",

abstract = "We report a pronounced tensile plasticity in a Au65Cu10.5Ag7.5Si17 metallic glass at room temperature. The tensile strength of the metallic glass decreases by decreasing the strain rate. Plastic deformation is heterogeneous and many percolating shear bands are observed on the fracture surface. In parallel, dynamic mechanical analysis indicates the absence of a pronounced secondary (or β) relaxation. Therefore, no correlation is observed between the relaxation behavior and the tensile plasticity.",

keywords = "Bulk amorphous alloys, Shear bands, Superplasticity",

author = "Qiao, {J. C.} and H. Wang and Pelletier, {J. M.} and H. Kato",

note = "Funding Information: We are appreciated the insightful discussions and suggestions with Prof. W.H. Wang and Dr. N. Nishiyama. One of the authors, J.C. Qiao would like to thank the Centre National de la Recherche Scientifique (CNRS) for providing the post-doctoral financial support.",

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doi = "10.1016/j.msea.2014.02.007",

language = "English",

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T1 - Pronounced tensile plasticity at room temperature in a Au65Cu10.5Ag7.5Si17 metallic glass

AU - Qiao, J. C.

AU - Wang, H.

AU - Pelletier, J. M.

AU - Kato, H.

N1 - Funding Information: We are appreciated the insightful discussions and suggestions with Prof. W.H. Wang and Dr. N. Nishiyama. One of the authors, J.C. Qiao would like to thank the Centre National de la Recherche Scientifique (CNRS) for providing the post-doctoral financial support.

PY - 2014/4/10

Y1 - 2014/4/10

N2 - We report a pronounced tensile plasticity in a Au65Cu10.5Ag7.5Si17 metallic glass at room temperature. The tensile strength of the metallic glass decreases by decreasing the strain rate. Plastic deformation is heterogeneous and many percolating shear bands are observed on the fracture surface. In parallel, dynamic mechanical analysis indicates the absence of a pronounced secondary (or β) relaxation. Therefore, no correlation is observed between the relaxation behavior and the tensile plasticity.

AB - We report a pronounced tensile plasticity in a Au65Cu10.5Ag7.5Si17 metallic glass at room temperature. The tensile strength of the metallic glass decreases by decreasing the strain rate. Plastic deformation is heterogeneous and many percolating shear bands are observed on the fracture surface. In parallel, dynamic mechanical analysis indicates the absence of a pronounced secondary (or β) relaxation. Therefore, no correlation is observed between the relaxation behavior and the tensile plasticity.

KW - Bulk amorphous alloys

KW - Shear bands

KW - Superplasticity

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