抄録
Equiatomic CuZr alloy undergoes a martensitic transformation from the B2 parent phase to martensitic phases (P21/m and Cm) below 150 °C. We clarified the effect of the thermal cycling on the morphology and crystallography of martensite in equiatomic CuZr alloy using a transmission electron microscopy. The 10th cycled specimens consisted of different multiple structures at the maximum temperature of differential scanning calorimetry (DSC) measurement −400 °C and 500 °C, respectively. At the maximum temperature 400 °C of DSC measurement, it is composed of the fine plate-like variants, and a lamellar eutectoid structure consisting of Cu10Zr7 and CuZr2 phases on the martensitic variant. Concerning the maximum temperature of 500 °C of DSC measurement, it is observed the martensitic structure and the lamellar structure in which the martensitic phase was completely eutectoid transformed. The formation of this lamellar eutectoid structure, due to thermal cycling leads to the shift of forward and reverse transformation peaks to low and high temperature side. In addition, new forward and reverse transformation peaks indicating a new transformation appeared by thermal cycling, and the peaks remained around −20 °C. This new martensitic transformation behavior is also discussed.
| 元の言語 | 英語 |
|---|---|
| 記事番号 | 580 |
| ジャーナル | Metals |
| 巻 | 9 |
| 発行部数 | 5 |
| DOI | |
| 出版物ステータス | 出版済み - 5 2019 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
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Microstructure and martensitic transformation behavior in thermal cycled equiatomic CuZr shape memory alloy. / Hisada, Shota; Matsuda, Mitsuhiro; Nishida, Minoru; Biffi, Carlo Alberto; Tuissi, Ausonio.
：: Metals, 巻 9, 番号 5, 580, 05.2019.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Microstructure and martensitic transformation behavior in thermal cycled equiatomic CuZr shape memory alloy
AU - Hisada, Shota
AU - Matsuda, Mitsuhiro
AU - Nishida, Minoru
AU - Biffi, Carlo Alberto
AU - Tuissi, Ausonio
PY - 2019/5
Y1 - 2019/5
N2 - Equiatomic CuZr alloy undergoes a martensitic transformation from the B2 parent phase to martensitic phases (P21/m and Cm) below 150 °C. We clarified the effect of the thermal cycling on the morphology and crystallography of martensite in equiatomic CuZr alloy using a transmission electron microscopy. The 10th cycled specimens consisted of different multiple structures at the maximum temperature of differential scanning calorimetry (DSC) measurement −400 °C and 500 °C, respectively. At the maximum temperature 400 °C of DSC measurement, it is composed of the fine plate-like variants, and a lamellar eutectoid structure consisting of Cu10Zr7 and CuZr2 phases on the martensitic variant. Concerning the maximum temperature of 500 °C of DSC measurement, it is observed the martensitic structure and the lamellar structure in which the martensitic phase was completely eutectoid transformed. The formation of this lamellar eutectoid structure, due to thermal cycling leads to the shift of forward and reverse transformation peaks to low and high temperature side. In addition, new forward and reverse transformation peaks indicating a new transformation appeared by thermal cycling, and the peaks remained around −20 °C. This new martensitic transformation behavior is also discussed.
AB - Equiatomic CuZr alloy undergoes a martensitic transformation from the B2 parent phase to martensitic phases (P21/m and Cm) below 150 °C. We clarified the effect of the thermal cycling on the morphology and crystallography of martensite in equiatomic CuZr alloy using a transmission electron microscopy. The 10th cycled specimens consisted of different multiple structures at the maximum temperature of differential scanning calorimetry (DSC) measurement −400 °C and 500 °C, respectively. At the maximum temperature 400 °C of DSC measurement, it is composed of the fine plate-like variants, and a lamellar eutectoid structure consisting of Cu10Zr7 and CuZr2 phases on the martensitic variant. Concerning the maximum temperature of 500 °C of DSC measurement, it is observed the martensitic structure and the lamellar structure in which the martensitic phase was completely eutectoid transformed. The formation of this lamellar eutectoid structure, due to thermal cycling leads to the shift of forward and reverse transformation peaks to low and high temperature side. In addition, new forward and reverse transformation peaks indicating a new transformation appeared by thermal cycling, and the peaks remained around −20 °C. This new martensitic transformation behavior is also discussed.
UR - http://www.scopus.com/inward/record.url?scp=85067611537&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067611537&partnerID=8YFLogxK
U2 - 10.3390/met9050580
DO - 10.3390/met9050580
M3 - Article
AN - SCOPUS:85067611537
VL - 9
JO - Metals
JF - Metals
SN - 2075-4701
IS - 5
M1 - 580
ER -