Effect of annealing on nanoindentation slips in a bulk metallic glass

J. Patrick Coleman; Fanqiang Meng; Koichi Tsuchiya; James Beadsworth; Michael LeBlanc; Peter K. Liaw; Jonathan T. Uhl; Richard L. Weaver; Karin A. Dahmen

doi:10.1103/PhysRevB.96.134117

Effect of annealing on nanoindentation slips in a bulk metallic glass

J. Patrick Coleman, Fanqiang Meng, Koichi Tsuchiya, James Beadsworth, Michael LeBlanc, Peter K. Liaw, Jonathan T. Uhl, Richard L. Weaver, Karin A. Dahmen

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

Abstract

We measure and analyze the statistics of nanoindentation pop-ins in a bulk metallic glass that has been annealed after being subjected to high pressure torsion. We argue that these pop-ins are avalanches of slip events. Larger slip avalanches are observed after annealing at higher temperatures. The slip avalanche size distribution shows scaling behavior and suggests the existence of a critical annealing temperature. Results are shown to be consistent with the predictions of a simple mean field theory. This implies that the statistics of slip avalanches in nanoindentation can be used to extract information about the structure, history, density, and free volume of the material. The methods employed here are expected to be applicable to a wide range of materials.

Original language	English (US)
Article number	134117
Journal	Physical Review B
Volume	96
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.96.134117
State	Published - Oct 19 2017

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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@article{66bd46b0abe04bd4848fbea5bc69d69e,

title = "Effect of annealing on nanoindentation slips in a bulk metallic glass",

abstract = "We measure and analyze the statistics of nanoindentation pop-ins in a bulk metallic glass that has been annealed after being subjected to high pressure torsion. We argue that these pop-ins are avalanches of slip events. Larger slip avalanches are observed after annealing at higher temperatures. The slip avalanche size distribution shows scaling behavior and suggests the existence of a critical annealing temperature. Results are shown to be consistent with the predictions of a simple mean field theory. This implies that the statistics of slip avalanches in nanoindentation can be used to extract information about the structure, history, density, and free volume of the material. The methods employed here are expected to be applicable to a wide range of materials.",

author = "Coleman, {J. Patrick} and Fanqiang Meng and Koichi Tsuchiya and James Beadsworth and Michael LeBlanc and Liaw, {Peter K.} and Uhl, {Jonathan T.} and Weaver, {Richard L.} and Dahmen, {Karin A.}",

note = "Funding Information: We thank Wendelin Wright and Will McFaul for helpful discussions. We acknowledge support from the US National Science Foundation (NSF) through Grants No. CBET 1336634 (K.A.D.), No. DMS 1069224 (K.A.D. and J.P.C.), and No. DMR 1611180 (P.K.L.). We also thank DOE for the support through Project No. DE-FE0011194, with the project managers, Dr. Markovich and Dr. Mullen (K.A.D. and P.K.L.). ",

year = "2017",

month = oct,

day = "19",

doi = "10.1103/PhysRevB.96.134117",

language = "English (US)",

volume = "96",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

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T1 - Effect of annealing on nanoindentation slips in a bulk metallic glass

AU - Coleman, J. Patrick

AU - Meng, Fanqiang

AU - Tsuchiya, Koichi

AU - Beadsworth, James

AU - LeBlanc, Michael

AU - Liaw, Peter K.

AU - Uhl, Jonathan T.

AU - Weaver, Richard L.

AU - Dahmen, Karin A.

N1 - Funding Information: We thank Wendelin Wright and Will McFaul for helpful discussions. We acknowledge support from the US National Science Foundation (NSF) through Grants No. CBET 1336634 (K.A.D.), No. DMS 1069224 (K.A.D. and J.P.C.), and No. DMR 1611180 (P.K.L.). We also thank DOE for the support through Project No. DE-FE0011194, with the project managers, Dr. Markovich and Dr. Mullen (K.A.D. and P.K.L.).

PY - 2017/10/19

Y1 - 2017/10/19

N2 - We measure and analyze the statistics of nanoindentation pop-ins in a bulk metallic glass that has been annealed after being subjected to high pressure torsion. We argue that these pop-ins are avalanches of slip events. Larger slip avalanches are observed after annealing at higher temperatures. The slip avalanche size distribution shows scaling behavior and suggests the existence of a critical annealing temperature. Results are shown to be consistent with the predictions of a simple mean field theory. This implies that the statistics of slip avalanches in nanoindentation can be used to extract information about the structure, history, density, and free volume of the material. The methods employed here are expected to be applicable to a wide range of materials.

AB - We measure and analyze the statistics of nanoindentation pop-ins in a bulk metallic glass that has been annealed after being subjected to high pressure torsion. We argue that these pop-ins are avalanches of slip events. Larger slip avalanches are observed after annealing at higher temperatures. The slip avalanche size distribution shows scaling behavior and suggests the existence of a critical annealing temperature. Results are shown to be consistent with the predictions of a simple mean field theory. This implies that the statistics of slip avalanches in nanoindentation can be used to extract information about the structure, history, density, and free volume of the material. The methods employed here are expected to be applicable to a wide range of materials.

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