A dislocation-based crystal plasticity simulation on kink band formation and evolution in polycrystalline Mg alloy with LPSO phase

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A three-dimensional compression analysis is performed by finite element method using a dislocation-based crystal plasticity model to clarify the formation mechanism of kink band in a polycrystalline Mg alloy with a long-period stacking ordered structure (LPSO) phase. The crystalline structure of LPSO phase is regarded as a HCP for simplicity, however, any deformation twinning is not taken into account. In addition, the activities of non-basal systems are considerably limited in the LPSO phase setting the values of their critical resolved shear stresses to large ones. We analyze a simple polycrystalline specimen composed of two α-Mg matrix phases and a LPSO phase both having a rectangular shape and twist grain boundaries are introduced into the interface. The obtained result shows that the kink band formation in the alloy is accomplished by the basal slips with different variants and the non-basal slips are activated on the grain boundary to maintain the continuity of deformation.

Original languageEnglish
Title of host publicationKey Engineering Materials
PublisherTrans Tech Publications Ltd
Pages281-286
Number of pages6
Volume626
ISBN (Print)9783038352266
DOIs
Publication statusPublished - 2015
Event12th Asia-Pacific Conference on Engineering Plasticity and Its Application, AEPA 2014 - Kaohsiung, Taiwan, Province of China
Duration: 2014 Sep 12014 Sep 5

Publication series

NameKey Engineering Materials
Volume626
ISSN (Print)10139826

Other

Other12th Asia-Pacific Conference on Engineering Plasticity and Its Application, AEPA 2014
CountryTaiwan, Province of China
CityKaohsiung
Period14/9/114/9/5

Fingerprint

Phase structure
Dislocations (crystals)
Plasticity
Crystals
Grain boundaries
Twinning
Shear stress
Compaction
Crystalline materials
Finite element method

Keywords

  • Crystal Plasticity
  • Deformation Kink
  • Dislocation
  • Finite Element Method
  • LPSO Phase
  • Magnesium alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Ueta, R., & Shizawa, K. (2015). A dislocation-based crystal plasticity simulation on kink band formation and evolution in polycrystalline Mg alloy with LPSO phase. In Key Engineering Materials (Vol. 626, pp. 281-286). (Key Engineering Materials; Vol. 626). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.626.281

A dislocation-based crystal plasticity simulation on kink band formation and evolution in polycrystalline Mg alloy with LPSO phase. / Ueta, Ryo; Shizawa, Kazuyuki.

Key Engineering Materials. Vol. 626 Trans Tech Publications Ltd, 2015. p. 281-286 (Key Engineering Materials; Vol. 626).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ueta, R & Shizawa, K 2015, A dislocation-based crystal plasticity simulation on kink band formation and evolution in polycrystalline Mg alloy with LPSO phase. in Key Engineering Materials. vol. 626, Key Engineering Materials, vol. 626, Trans Tech Publications Ltd, pp. 281-286, 12th Asia-Pacific Conference on Engineering Plasticity and Its Application, AEPA 2014, Kaohsiung, Taiwan, Province of China, 14/9/1. https://doi.org/10.4028/www.scientific.net/KEM.626.281
Ueta, Ryo ; Shizawa, Kazuyuki. / A dislocation-based crystal plasticity simulation on kink band formation and evolution in polycrystalline Mg alloy with LPSO phase. Key Engineering Materials. Vol. 626 Trans Tech Publications Ltd, 2015. pp. 281-286 (Key Engineering Materials).
@inproceedings{6afec1aefa7444e1bc6f4ecb0451cb80,
title = "A dislocation-based crystal plasticity simulation on kink band formation and evolution in polycrystalline Mg alloy with LPSO phase",
abstract = "A three-dimensional compression analysis is performed by finite element method using a dislocation-based crystal plasticity model to clarify the formation mechanism of kink band in a polycrystalline Mg alloy with a long-period stacking ordered structure (LPSO) phase. The crystalline structure of LPSO phase is regarded as a HCP for simplicity, however, any deformation twinning is not taken into account. In addition, the activities of non-basal systems are considerably limited in the LPSO phase setting the values of their critical resolved shear stresses to large ones. We analyze a simple polycrystalline specimen composed of two α-Mg matrix phases and a LPSO phase both having a rectangular shape and twist grain boundaries are introduced into the interface. The obtained result shows that the kink band formation in the alloy is accomplished by the basal slips with different variants and the non-basal slips are activated on the grain boundary to maintain the continuity of deformation.",
keywords = "Crystal Plasticity, Deformation Kink, Dislocation, Finite Element Method, LPSO Phase, Magnesium alloy",
author = "Ryo Ueta and Kazuyuki Shizawa",
year = "2015",
doi = "10.4028/www.scientific.net/KEM.626.281",
language = "English",
isbn = "9783038352266",
volume = "626",
series = "Key Engineering Materials",
publisher = "Trans Tech Publications Ltd",
pages = "281--286",
booktitle = "Key Engineering Materials",

}

TY - GEN

T1 - A dislocation-based crystal plasticity simulation on kink band formation and evolution in polycrystalline Mg alloy with LPSO phase

AU - Ueta, Ryo

AU - Shizawa, Kazuyuki

PY - 2015

Y1 - 2015

N2 - A three-dimensional compression analysis is performed by finite element method using a dislocation-based crystal plasticity model to clarify the formation mechanism of kink band in a polycrystalline Mg alloy with a long-period stacking ordered structure (LPSO) phase. The crystalline structure of LPSO phase is regarded as a HCP for simplicity, however, any deformation twinning is not taken into account. In addition, the activities of non-basal systems are considerably limited in the LPSO phase setting the values of their critical resolved shear stresses to large ones. We analyze a simple polycrystalline specimen composed of two α-Mg matrix phases and a LPSO phase both having a rectangular shape and twist grain boundaries are introduced into the interface. The obtained result shows that the kink band formation in the alloy is accomplished by the basal slips with different variants and the non-basal slips are activated on the grain boundary to maintain the continuity of deformation.

AB - A three-dimensional compression analysis is performed by finite element method using a dislocation-based crystal plasticity model to clarify the formation mechanism of kink band in a polycrystalline Mg alloy with a long-period stacking ordered structure (LPSO) phase. The crystalline structure of LPSO phase is regarded as a HCP for simplicity, however, any deformation twinning is not taken into account. In addition, the activities of non-basal systems are considerably limited in the LPSO phase setting the values of their critical resolved shear stresses to large ones. We analyze a simple polycrystalline specimen composed of two α-Mg matrix phases and a LPSO phase both having a rectangular shape and twist grain boundaries are introduced into the interface. The obtained result shows that the kink band formation in the alloy is accomplished by the basal slips with different variants and the non-basal slips are activated on the grain boundary to maintain the continuity of deformation.

KW - Crystal Plasticity

KW - Deformation Kink

KW - Dislocation

KW - Finite Element Method

KW - LPSO Phase

KW - Magnesium alloy

UR - http://www.scopus.com/inward/record.url?scp=84907074164&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84907074164&partnerID=8YFLogxK

U2 - 10.4028/www.scientific.net/KEM.626.281

DO - 10.4028/www.scientific.net/KEM.626.281

M3 - Conference contribution

AN - SCOPUS:84907074164

SN - 9783038352266

VL - 626

T3 - Key Engineering Materials

SP - 281

EP - 286

BT - Key Engineering Materials

PB - Trans Tech Publications Ltd

ER -