Details
| Original language | English |
|---|---|
| Pages (from-to) | 497-499 |
| Number of pages | 3 |
| Journal | Scripta materialia |
| Volume | 57 |
| Issue number | 6 |
| Publication status | Published - Sept 2007 |
| Externally published | Yes |
Abstract
Tensile and compressive strain-temperature and stress-strain responses have been used for the first time to investigate the effects of second-phase particles on the deformation of NiFeGa shape memory alloys. Particles are conducive to the dissipation of stored energy; stress and thermal hysteresis increase three-fold in aged alloys. Although dissipation is severe, recoverable strain levels are as large as +12% and -6%, which match strains for the unaged alloys. These results demonstrate that second-phase particles can be used to tailor the hysteresis while maintaining large transformation strains.
Keywords
- Annealing, Microstructure, Shape memory, Strain-temperature asymmetry, Stress-strain asymmetry
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. 57, No. 6, 09.2007, p. 497-499.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Mechanical response of NiFeGa alloys containing second-phase particles
AU - Hamilton, R. F.
AU - Sehitoglu, H.
AU - Efstathiou, C.
AU - Maier, H. J.
N1 - Funding Information: The work was supported by a grant CMS-0428428, the National Science Foundation, Division of Civil and Mechanical Systems.
PY - 2007/9
Y1 - 2007/9
N2 - Tensile and compressive strain-temperature and stress-strain responses have been used for the first time to investigate the effects of second-phase particles on the deformation of NiFeGa shape memory alloys. Particles are conducive to the dissipation of stored energy; stress and thermal hysteresis increase three-fold in aged alloys. Although dissipation is severe, recoverable strain levels are as large as +12% and -6%, which match strains for the unaged alloys. These results demonstrate that second-phase particles can be used to tailor the hysteresis while maintaining large transformation strains.
AB - Tensile and compressive strain-temperature and stress-strain responses have been used for the first time to investigate the effects of second-phase particles on the deformation of NiFeGa shape memory alloys. Particles are conducive to the dissipation of stored energy; stress and thermal hysteresis increase three-fold in aged alloys. Although dissipation is severe, recoverable strain levels are as large as +12% and -6%, which match strains for the unaged alloys. These results demonstrate that second-phase particles can be used to tailor the hysteresis while maintaining large transformation strains.
KW - Annealing
KW - Microstructure
KW - Shape memory
KW - Strain-temperature asymmetry
KW - Stress-strain asymmetry
UR - http://www.scopus.com/inward/record.url?scp=34447257661&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2007.05.024
DO - 10.1016/j.scriptamat.2007.05.024
M3 - Article
AN - SCOPUS:34447257661
VL - 57
SP - 497
EP - 499
JO - Scripta materialia
JF - Scripta materialia
SN - 1359-6462
IS - 6
ER -