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The Nanostructured Origin of Deformation Twinning

We have revealed the fundamental embryonic structure of deformation twins using in situ mechanical testing of magnesium single crystals in a transmission electron microscope. This structure consists of an array of twin-related laths on the scale of several nanometers. A computational model demonstra...

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Published in:	Nano letters 2012-02, Vol.12 (2), p.887-892
Main Authors:	Yu, Qian, Qi, Liang, Chen, Kai, Mishra, Raja K, Li, Ju, Minor, Andrew M
Format:	Article
Language:	English
Subjects:	Alloys Arrays Condensed matter: structure, mechanical and thermal properties Deformation Deformation and plasticity (including yield, ductility, and superplasticity) Electron microscopes Exact sciences and technology Magnesium Magnesium - chemistry Mechanical and acoustical properties of condensed matter Mechanical properties of solids Microscopy, Electron, Transmission Molecular Dynamics Simulation Monte Carlo Method Nanostructure Nanostructures - chemistry Nucleation Origins Particle Size Physics Surface Properties Twinning
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creator	Yu, Qian Qi, Liang Chen, Kai Mishra, Raja K Li, Ju Minor, Andrew M
description	We have revealed the fundamental embryonic structure of deformation twins using in situ mechanical testing of magnesium single crystals in a transmission electron microscope. This structure consists of an array of twin-related laths on the scale of several nanometers. A computational model demonstrates that this structure should be a generic feature at the incipient stage of deformation twinning when there are correlated nucleation events. Our results shed light on the origin of twinning-induced plasticity and transformation toughening, critical to the development of advanced structural alloys with high strength, ductility, and toughness.
doi_str_mv	10.1021/nl203937t
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source	American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects	Alloys Arrays Condensed matter: structure, mechanical and thermal properties Deformation Deformation and plasticity (including yield, ductility, and superplasticity) Electron microscopes Exact sciences and technology Magnesium Magnesium - chemistry Mechanical and acoustical properties of condensed matter Mechanical properties of solids Microscopy, Electron, Transmission Molecular Dynamics Simulation Monte Carlo Method Nanostructure Nanostructures - chemistry Nucleation Origins Particle Size Physics Surface Properties Twinning
title	The Nanostructured Origin of Deformation Twinning
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