Methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ TEM tensile tests

Abstract Deformation twinning, one of the major deformation modes in a crystalline material, has typically been analyzed using generalized planar fault energy (GPFE) curves. Despite the significance of these curves in understanding the twin nucleation and its effect on the mechanical properties of c...

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Main Authors:	Hong-Kyu Kim, Sung-Hoon Kim, Jae-Pyoung Ahn
Format:	Article
Language:	English
Published:	SpringerOpen 2020-09-01
Series:	Applied Microscopy
Online Access:	https://doi.org/10.1186/s42649-020-00039-2

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spelling	doaj-0f385c299b2b4a6092286d20374740ab2021-09-19T11:46:42ZengSpringerOpenApplied Microscopy2287-44452020-09-015011910.1186/s42649-020-00039-2Methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ TEM tensile testsHong-Kyu Kim0Sung-Hoon Kim1Jae-Pyoung Ahn2Advanced Analysis Center, Korea Institute of Science and TechnologyAdvanced Analysis Center, Korea Institute of Science and TechnologyAdvanced Analysis Center, Korea Institute of Science and TechnologyAbstract Deformation twinning, one of the major deformation modes in a crystalline material, has typically been analyzed using generalized planar fault energy (GPFE) curves. Despite the significance of these curves in understanding the twin nucleation and its effect on the mechanical properties of crystals, their experimental validity is lacking. In this comparative study based on the first-principles calculation, molecular dynamics simulation, and quantitative in-situ tensile testing of Al nanowires inside a transmission electron microscopy system, we present both a theoretical and an experimental approach that enable the measurement of a part of the twin formation energy of the perfect Al crystal. The proposed experimental method is also regarded as an indirect but quantitative means for validating the GPFE theory.https://doi.org/10.1186/s42649-020-00039-2
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Hong-Kyu Kim Sung-Hoon Kim Jae-Pyoung Ahn
spellingShingle	Hong-Kyu Kim Sung-Hoon Kim Jae-Pyoung Ahn Methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ TEM tensile tests Applied Microscopy
author_facet	Hong-Kyu Kim Sung-Hoon Kim Jae-Pyoung Ahn
author_sort	Hong-Kyu Kim
title	Methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ TEM tensile tests
title_short	Methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ TEM tensile tests
title_full	Methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ TEM tensile tests
title_fullStr	Methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ TEM tensile tests
title_full_unstemmed	Methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ TEM tensile tests
title_sort	methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ tem tensile tests
publisher	SpringerOpen
series	Applied Microscopy
issn	2287-4445
publishDate	2020-09-01
description	Abstract Deformation twinning, one of the major deformation modes in a crystalline material, has typically been analyzed using generalized planar fault energy (GPFE) curves. Despite the significance of these curves in understanding the twin nucleation and its effect on the mechanical properties of crystals, their experimental validity is lacking. In this comparative study based on the first-principles calculation, molecular dynamics simulation, and quantitative in-situ tensile testing of Al nanowires inside a transmission electron microscopy system, we present both a theoretical and an experimental approach that enable the measurement of a part of the twin formation energy of the perfect Al crystal. The proposed experimental method is also regarded as an indirect but quantitative means for validating the GPFE theory.
url	https://doi.org/10.1186/s42649-020-00039-2
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Methods to evaluate the twin formation energy: comparative studies of the atomic simulations and in-situ TEM tensile tests

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