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 language | English |
|---|---|
| Title of host publication | Key Engineering Materials |
| Publisher | Trans Tech Publications Ltd |
| Pages | 281-286 |
| Number of pages | 6 |
| Volume | 626 |
| ISBN (Print) | 9783038352266 |
| DOIs | |
| Publication status | Published - 2015 |
| Event | 12th Asia-Pacific Conference on Engineering Plasticity and Its Application, AEPA 2014 - Kaohsiung, Taiwan, Province of China Duration: 2014 Sep 1 → 2014 Sep 5 |
Publication series
| Name | Key Engineering Materials |
|---|---|
| Volume | 626 |
| ISSN (Print) | 10139826 |
Other
| Other | 12th Asia-Pacific Conference on Engineering Plasticity and Its Application, AEPA 2014 |
|---|---|
| Country | Taiwan, Province of China |
| City | Kaohsiung |
| Period | 14/9/1 → 14/9/5 |
Fingerprint
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
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 proceeding › Conference contribution
}
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 -