Abstract
Deformation modes at various stages of plastic deformation have been investigated at the same location in an Fe-30Mn-5Si-1Al (mass%) alloy specimen, which exhibits a good shape memory effect associated with the FCC(γ) → HCP(ε) martensitic transformation and a relatively high ductility caused by deformation twinning. The surface relief caused by the γ → ε martensitic transformation, deformation twinning and slip band formation has been analyzed by measuring the surface tilt angles corresponding to each deformation mode by atomic force microscopy. Although the ε-martensitic transformation is the dominant deformation mode at an early deformation stage, a part of the ε- martensite plates changes to deformation twins with increasing tensile strain. Slip deformation also occurs inside the same region under excessive strain. A continuous transition of these deformation modes occurs in other grains as well in the same order: ε martensite → deformation twins → slip bands.
| Original language | English |
|---|---|
| Pages (from-to) | 1194-1199 |
| Number of pages | 6 |
| Journal | Materials Transactions |
| Volume | 51 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2010 Jul |
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Keywords
- Atomic force microscope
- Shape memory
- Slip deformation
- Stress induced martensitic transfonnation
- Twinning deformation
- Twinning induced plasticity
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
- Mechanics of Materials
Cite this
Continuous transition of deformation modes in Fe-30Mn-5Si-1Al alloy. / Koyama, Motomichi; Sawaguchi, Takahiro; Ogawa, Kazuyuki; Kikuchi, Takehiko; Murakami, Masato.
In: Materials Transactions, Vol. 51, No. 7, 07.2010, p. 1194-1199.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Continuous transition of deformation modes in Fe-30Mn-5Si-1Al alloy
AU - Koyama, Motomichi
AU - Sawaguchi, Takahiro
AU - Ogawa, Kazuyuki
AU - Kikuchi, Takehiko
AU - Murakami, Masato
PY - 2010/7
Y1 - 2010/7
N2 - Deformation modes at various stages of plastic deformation have been investigated at the same location in an Fe-30Mn-5Si-1Al (mass%) alloy specimen, which exhibits a good shape memory effect associated with the FCC(γ) → HCP(ε) martensitic transformation and a relatively high ductility caused by deformation twinning. The surface relief caused by the γ → ε martensitic transformation, deformation twinning and slip band formation has been analyzed by measuring the surface tilt angles corresponding to each deformation mode by atomic force microscopy. Although the ε-martensitic transformation is the dominant deformation mode at an early deformation stage, a part of the ε- martensite plates changes to deformation twins with increasing tensile strain. Slip deformation also occurs inside the same region under excessive strain. A continuous transition of these deformation modes occurs in other grains as well in the same order: ε martensite → deformation twins → slip bands.
AB - Deformation modes at various stages of plastic deformation have been investigated at the same location in an Fe-30Mn-5Si-1Al (mass%) alloy specimen, which exhibits a good shape memory effect associated with the FCC(γ) → HCP(ε) martensitic transformation and a relatively high ductility caused by deformation twinning. The surface relief caused by the γ → ε martensitic transformation, deformation twinning and slip band formation has been analyzed by measuring the surface tilt angles corresponding to each deformation mode by atomic force microscopy. Although the ε-martensitic transformation is the dominant deformation mode at an early deformation stage, a part of the ε- martensite plates changes to deformation twins with increasing tensile strain. Slip deformation also occurs inside the same region under excessive strain. A continuous transition of these deformation modes occurs in other grains as well in the same order: ε martensite → deformation twins → slip bands.
KW - Atomic force microscope
KW - Shape memory
KW - Slip deformation
KW - Stress induced martensitic transfonnation
KW - Twinning deformation
KW - Twinning induced plasticity
UR - http://www.scopus.com/inward/record.url?scp=77956146954&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956146954&partnerID=8YFLogxK
U2 - 10.2320/matertrans.M2010073
DO - 10.2320/matertrans.M2010073
M3 - Article
VL - 51
SP - 1194
EP - 1199
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 7
ER -