Details
| Original language | English |
|---|---|
| Pages (from-to) | 368-371 |
| Number of pages | 4 |
| Journal | Scripta materialia |
| Volume | 62 |
| Issue number | 6 |
| Publication status | Published - 11 Nov 2009 |
| Externally published | Yes |
Abstract
A large temperature range of stress-induced martensitic transformation with >8% superelastic strain is demonstrated in [1 0 0]-oriented Co49Ni21Ga30 single crystals. The nature of the superelastic response is greatly affected by temperature and test history due to the temperature-dependent dominant microstructural mechanisms. We provide an insight into these mechanisms and divide the response into three temperature stages. Interestingly, a small stress hysteresis of only 2 MPa was achieved after the superelastic experiments at 300 °C compared to 20 MPa of the virgin sample.
Keywords
- High-temperature deformation, Martensitic phase transformation, Shape memory alloys, Superelasticity
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Metals and Alloys
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In: Scripta materialia, Vol. 62, No. 6, 11.11.2009, p. 368-371.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High-temperature superelasticity and competing microstructural mechanisms in Co49Ni21Ga30 shape memory alloy single crystals under tension
AU - Monroe, J. A.
AU - Karaman, I.
AU - Karaca, H. E.
AU - Chumlyakov, Y. I.
AU - Maier, H. J.
PY - 2009/11/11
Y1 - 2009/11/11
N2 - A large temperature range of stress-induced martensitic transformation with >8% superelastic strain is demonstrated in [1 0 0]-oriented Co49Ni21Ga30 single crystals. The nature of the superelastic response is greatly affected by temperature and test history due to the temperature-dependent dominant microstructural mechanisms. We provide an insight into these mechanisms and divide the response into three temperature stages. Interestingly, a small stress hysteresis of only 2 MPa was achieved after the superelastic experiments at 300 °C compared to 20 MPa of the virgin sample.
AB - A large temperature range of stress-induced martensitic transformation with >8% superelastic strain is demonstrated in [1 0 0]-oriented Co49Ni21Ga30 single crystals. The nature of the superelastic response is greatly affected by temperature and test history due to the temperature-dependent dominant microstructural mechanisms. We provide an insight into these mechanisms and divide the response into three temperature stages. Interestingly, a small stress hysteresis of only 2 MPa was achieved after the superelastic experiments at 300 °C compared to 20 MPa of the virgin sample.
KW - High-temperature deformation
KW - Martensitic phase transformation
KW - Shape memory alloys
KW - Superelasticity
UR - http://www.scopus.com/inward/record.url?scp=73549103399&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2009.11.006
DO - 10.1016/j.scriptamat.2009.11.006
M3 - Article
AN - SCOPUS:73549103399
VL - 62
SP - 368
EP - 371
JO - Scripta materialia
JF - Scripta materialia
SN - 1359-6462
IS - 6
ER -