Details
| Original language | English |
|---|---|
| Pages (from-to) | 2458-2463 |
| Number of pages | 6 |
| Journal | INTERMETALLICS |
| Volume | 18 |
| Issue number | 12 |
| Publication status | Published - 2 Oct 2010 |
| Externally published | Yes |
Abstract
In the present study the effects of stress state (tension/compression) and test temperature on the critical stress level for the stress-induced martensitic transformation, the shape memory effect and superelasticity of [001]-oriented Ni49Fe18Ga27Co6 (at.%) single crystals were investigated. It is shown that the strong tension/compression asymmetry of the critical stress levels for the stress-induced martensitic transformation can be described by a modified Clausius-Clapreyron relationship, which takes the difference between the elastic moduli of austenite and martensite into account. The temperature interval in which superelasticity occurs and the reversible strain values associated with superelasticity and the shape memory effect are both strongly dependent on the stress state (tension/compression). Moreover, the conditions necessary for the development of high-temperature superelasticity in Ni49Fe18Ga 27Co6 single crystals have been determined. For the Ni49Fe18Ga27Co6 single crystals a large interval of superelasticity (315 K < T < 723 K) was obtained when the single crystals were loaded in tension along the [001]-orientation.
Keywords
- A. Magnetic intermetallics, B. Martensitic transformations, B. Shape memory effect, D. Microstructure
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Metals and Alloys
- Materials Science(all)
- Materials Chemistry
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In: INTERMETALLICS, Vol. 18, No. 12, 02.10.2010, p. 2458-2463.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tension/compression asymmetry of functional properties in [001]-oriented ferromagnetic NiFeGaCo single crystals
AU - Panchenko, E.
AU - Chumlyakov, Y.
AU - Maier, H. J.
AU - Timofeeva, E.
AU - Karaman, I.
N1 - Funding information: This work was supported by the following research grants: RFBR, 09-03-00103-a and 08-08-91952, DFG MA 1175/25-1, Federal Program No. 14.740.11.0258.
PY - 2010/10/2
Y1 - 2010/10/2
N2 - In the present study the effects of stress state (tension/compression) and test temperature on the critical stress level for the stress-induced martensitic transformation, the shape memory effect and superelasticity of [001]-oriented Ni49Fe18Ga27Co6 (at.%) single crystals were investigated. It is shown that the strong tension/compression asymmetry of the critical stress levels for the stress-induced martensitic transformation can be described by a modified Clausius-Clapreyron relationship, which takes the difference between the elastic moduli of austenite and martensite into account. The temperature interval in which superelasticity occurs and the reversible strain values associated with superelasticity and the shape memory effect are both strongly dependent on the stress state (tension/compression). Moreover, the conditions necessary for the development of high-temperature superelasticity in Ni49Fe18Ga 27Co6 single crystals have been determined. For the Ni49Fe18Ga27Co6 single crystals a large interval of superelasticity (315 K < T < 723 K) was obtained when the single crystals were loaded in tension along the [001]-orientation.
AB - In the present study the effects of stress state (tension/compression) and test temperature on the critical stress level for the stress-induced martensitic transformation, the shape memory effect and superelasticity of [001]-oriented Ni49Fe18Ga27Co6 (at.%) single crystals were investigated. It is shown that the strong tension/compression asymmetry of the critical stress levels for the stress-induced martensitic transformation can be described by a modified Clausius-Clapreyron relationship, which takes the difference between the elastic moduli of austenite and martensite into account. The temperature interval in which superelasticity occurs and the reversible strain values associated with superelasticity and the shape memory effect are both strongly dependent on the stress state (tension/compression). Moreover, the conditions necessary for the development of high-temperature superelasticity in Ni49Fe18Ga 27Co6 single crystals have been determined. For the Ni49Fe18Ga27Co6 single crystals a large interval of superelasticity (315 K < T < 723 K) was obtained when the single crystals were loaded in tension along the [001]-orientation.
KW - A. Magnetic intermetallics
KW - B. Martensitic transformations
KW - B. Shape memory effect
KW - D. Microstructure
UR - http://www.scopus.com/inward/record.url?scp=77957860811&partnerID=8YFLogxK
U2 - 10.1016/j.intermet.2010.09.009
DO - 10.1016/j.intermet.2010.09.009
M3 - Article
AN - SCOPUS:77957860811
VL - 18
SP - 2458
EP - 2463
JO - INTERMETALLICS
JF - INTERMETALLICS
SN - 0966-9795
IS - 12
ER -