Mechanical response of NiFeGa alloys containing second-phase particles

R. F. Hamilton; H. Sehitoglu; C. Efstathiou; H. J. Maier

doi:10.1016/j.scriptamat.2007.05.024

Mechanical response of NiFeGa alloys containing second-phase particles

R. F. Hamilton, H. Sehitoglu, C. Efstathiou, H. J. Maier

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

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.

Original language	English (US)
Pages (from-to)	497-499
Number of pages	3
Journal	Scripta Materialia
Volume	57
Issue number	6
DOIs	https://doi.org/10.1016/j.scriptamat.2007.05.024
State	Published - Sep 2007

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2007.05.024

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title = "Mechanical response of NiFeGa alloys containing second-phase particles",

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.",

author = "Hamilton, {R. F.} and H. Sehitoglu and C. Efstathiou and Maier, {H. J.}",

note = "Funding Information: The work was supported by a grant CMS-0428428, the National Science Foundation, Division of Civil and Mechanical Systems. ",

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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.

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EP - 499

JO - Scripta Materialia

JF - Scripta Materialia

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Mechanical response of NiFeGa alloys containing second-phase particles

Abstract

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