Cryogenic indentation-induced grain growth in nanotwinned copper

J. G. Brons; H. A. Padilla; G. B. Thompson; B. L. Boyce

doi:10.1016/j.scriptamat.2012.12.026

Cryogenic indentation-induced grain growth in nanotwinned copper

J. G. Brons
, H. A. Padilla
, G. B. Thompson
, B. L. Boyce

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

32 Scopus citations

Abstract

Nanocrystalline copper thin films with as-deposited Σ3 twin boundaries were indented while immersed in liquid nitrogen. Quantification using precession-enhanced electron diffraction determined the crystallographic texture and grain-to-grain misorientation of the undeformed, pile-up and compressed regions. Grains in the undeformed region retained a high density of Σ3 recrystallization twins, whereas the pile-up showed significant coarsening, prevalent Σ7 subgrain formation and a decrease in twin boundaries. The abnormal grain growth is attributed to a detwinning mechanism. The compressed region showed significant grain refinement. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	781-784
Number of pages	4
Journal	Scripta Materialia
Volume	68
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2012.12.026
State	Published - May 1 2013
Externally published	Yes

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10.1016/j.scriptamat.2012.12.026

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title = "Cryogenic indentation-induced grain growth in nanotwinned copper",

abstract = "Nanocrystalline copper thin films with as-deposited Σ3 twin boundaries were indented while immersed in liquid nitrogen. Quantification using precession-enhanced electron diffraction determined the crystallographic texture and grain-to-grain misorientation of the undeformed, pile-up and compressed regions. Grains in the undeformed region retained a high density of Σ3 recrystallization twins, whereas the pile-up showed significant coarsening, prevalent Σ7 subgrain formation and a decrease in twin boundaries. The abnormal grain growth is attributed to a detwinning mechanism. The compressed region showed significant grain refinement. {\textcopyright} 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.",

author = "Brons, \{J. G.\} and Padilla, \{H. A.\} and Thompson, \{G. B.\} and Boyce, \{B. L.\}",

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doi = "10.1016/j.scriptamat.2012.12.026",

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AU - Brons, J. G.

AU - Padilla, H. A.

AU - Thompson, G. B.

AU - Boyce, B. L.

PY - 2013/5/1

Y1 - 2013/5/1

N2 - Nanocrystalline copper thin films with as-deposited Σ3 twin boundaries were indented while immersed in liquid nitrogen. Quantification using precession-enhanced electron diffraction determined the crystallographic texture and grain-to-grain misorientation of the undeformed, pile-up and compressed regions. Grains in the undeformed region retained a high density of Σ3 recrystallization twins, whereas the pile-up showed significant coarsening, prevalent Σ7 subgrain formation and a decrease in twin boundaries. The abnormal grain growth is attributed to a detwinning mechanism. The compressed region showed significant grain refinement. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

AB - Nanocrystalline copper thin films with as-deposited Σ3 twin boundaries were indented while immersed in liquid nitrogen. Quantification using precession-enhanced electron diffraction determined the crystallographic texture and grain-to-grain misorientation of the undeformed, pile-up and compressed regions. Grains in the undeformed region retained a high density of Σ3 recrystallization twins, whereas the pile-up showed significant coarsening, prevalent Σ7 subgrain formation and a decrease in twin boundaries. The abnormal grain growth is attributed to a detwinning mechanism. The compressed region showed significant grain refinement. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

UR - https://www.scopus.com/pages/publications/84875226699

U2 - 10.1016/j.scriptamat.2012.12.026

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VL - 68

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EP - 784

JO - Scripta Materialia

JF - Scripta Materialia

IS - 10

ER -

Cryogenic indentation-induced grain growth in nanotwinned copper

Abstract

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