Crystal plasticity FE simulation for kink band formation in Mg-based LPSO phase using dislocation-based higher-order stress model

The dislocation-based crystal plasticity model considering higher-order stress has been constructed and a finite element (FE) analysis is conducted for both a single crystal and polycrystal with a long-period stacking ordered (LPSO) phase on the basis of the obtained model. The mesh dependence of th...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yuichi KIMURA, Ryo UETA, Kazuyuki SHIZAWA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	plasticity magnesium alloy dislocation finite element method crystal plasticity size effect Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/702510de5d694de09b55808841f2f68e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:702510de5d694de09b55808841f2f68e
record_format	dspace
spelling	oai:doaj.org-article:702510de5d694de09b55808841f2f68e2021-11-29T05:59:26ZCrystal plasticity FE simulation for kink band formation in Mg-based LPSO phase using dislocation-based higher-order stress model2187-974510.1299/mej.19-00612https://doaj.org/article/702510de5d694de09b55808841f2f68e2020-02-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/4/7_19-00612/_pdf/-char/enhttps://doaj.org/toc/2187-9745The dislocation-based crystal plasticity model considering higher-order stress has been constructed and a finite element (FE) analysis is conducted for both a single crystal and polycrystal with a long-period stacking ordered (LPSO) phase on the basis of the obtained model. The mesh dependence of the kink band formation is discussed from the viewpoints of the strain gradient, size effect and higher-order boundary condition. Then, it is shown that the mesh dependence of kink deformation in the FE analysis can be removed even when the scale ratio is relatively small. The width of the kink band is determined by the intrinsic length scale. When the kink band occurs in the entire specimen, work hardening can be reproduced by appropriately defining the boundary conditions for slip. The effect of the micro-scale ratio on the kink deformation is small. The disclination quadrupole structure in the kink band can be expressed qualitatively by using the incompatibility of crystal slip. Moreover, it is shown the back stress behaves as the resistance to the slip deformation in a polycrystal consisting of LPSO phases in shape of rectangular strip.Yuichi KIMURARyo UETAKazuyuki SHIZAWAThe Japan Society of Mechanical Engineersarticleplasticitymagnesium alloydislocationfinite element methodcrystal plasticitysize effectMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 4, Pp 19-00612-19-00612 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	plasticity magnesium alloy dislocation finite element method crystal plasticity size effect Mechanical engineering and machinery TJ1-1570
spellingShingle	plasticity magnesium alloy dislocation finite element method crystal plasticity size effect Mechanical engineering and machinery TJ1-1570 Yuichi KIMURA Ryo UETA Kazuyuki SHIZAWA Crystal plasticity FE simulation for kink band formation in Mg-based LPSO phase using dislocation-based higher-order stress model
description	The dislocation-based crystal plasticity model considering higher-order stress has been constructed and a finite element (FE) analysis is conducted for both a single crystal and polycrystal with a long-period stacking ordered (LPSO) phase on the basis of the obtained model. The mesh dependence of the kink band formation is discussed from the viewpoints of the strain gradient, size effect and higher-order boundary condition. Then, it is shown that the mesh dependence of kink deformation in the FE analysis can be removed even when the scale ratio is relatively small. The width of the kink band is determined by the intrinsic length scale. When the kink band occurs in the entire specimen, work hardening can be reproduced by appropriately defining the boundary conditions for slip. The effect of the micro-scale ratio on the kink deformation is small. The disclination quadrupole structure in the kink band can be expressed qualitatively by using the incompatibility of crystal slip. Moreover, it is shown the back stress behaves as the resistance to the slip deformation in a polycrystal consisting of LPSO phases in shape of rectangular strip.
format	article
author	Yuichi KIMURA Ryo UETA Kazuyuki SHIZAWA
author_facet	Yuichi KIMURA Ryo UETA Kazuyuki SHIZAWA
author_sort	Yuichi KIMURA
title	Crystal plasticity FE simulation for kink band formation in Mg-based LPSO phase using dislocation-based higher-order stress model
title_short	Crystal plasticity FE simulation for kink band formation in Mg-based LPSO phase using dislocation-based higher-order stress model
title_full	Crystal plasticity FE simulation for kink band formation in Mg-based LPSO phase using dislocation-based higher-order stress model
title_fullStr	Crystal plasticity FE simulation for kink band formation in Mg-based LPSO phase using dislocation-based higher-order stress model
title_full_unstemmed	Crystal plasticity FE simulation for kink band formation in Mg-based LPSO phase using dislocation-based higher-order stress model
title_sort	crystal plasticity fe simulation for kink band formation in mg-based lpso phase using dislocation-based higher-order stress model
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/702510de5d694de09b55808841f2f68e
work_keys_str_mv	AT yuichikimura crystalplasticityfesimulationforkinkbandformationinmgbasedlpsophaseusingdislocationbasedhigherorderstressmodel AT ryoueta crystalplasticityfesimulationforkinkbandformationinmgbasedlpsophaseusingdislocationbasedhigherorderstressmodel AT kazuyukishizawa crystalplasticityfesimulationforkinkbandformationinmgbasedlpsophaseusingdislocationbasedhigherorderstressmodel
_version_	1718407591443300352

Crystal plasticity FE simulation for kink band formation in Mg-based LPSO phase using dislocation-based higher-order stress model

Ejemplares similares