Pseudoelasticity in Co-Ni-Al single and polycrystals

Research output: Contribution to journalArticleResearchpeer review

Authors

  • R. F. Hamilton
  • H. Sehitoglu
  • C. Efstathiou
  • H. J. Maier
  • Y. Chumlyakov

External Research Organisations

  • University of Illinois at Urbana-Champaign
  • Paderborn University
  • Tomsk State University
View graph of relations

Details

Original languageEnglish
Pages (from-to)587-599
Number of pages13
JournalActa materialia
Volume54
Issue number3
Publication statusPublished - Feb 2006
Externally publishedYes

Abstract

The pseudoelastic responses of heat-treated CoNiAl single crystals with [0 0 1] and [1 1 5] orientations, multicrystals of nominally [1 2 3] orientation, and polycrystals are investigated under tension and compression stress states. The highest transformation strains are found under pseudoelasticity for the [0 0 1] orientation in tension and compression as 6.2% and 4.1% respectively. Experiments reveal tension-compression asymmetry of the critical transformation stress and of the stress hysteresis. The pseudoelastic stress-strain response is limited in tension to a much narrower temperature range than that in compression. The levels of strain recovery and the size of the stress hysteresis reveal the influence of dissipative mechanisms. A thermodynamics framework is proposed for describing the role of plastic flow and the internal stress fields on the stress hysteresis behavior. Single crystals exhibit considerable recovery compared to polycrystals and multicrystals. Extensive transmission electron microscopy results confirm the increased plastic flow at the austenite-martensite interfaces and in the secondary phase.

Keywords

    Critical stress, Ferromagnetic shape memory alloy, Phase transformation, Pseudoelasticity, Shape memory

ASJC Scopus subject areas

Cite this

Pseudoelasticity in Co-Ni-Al single and polycrystals. / Hamilton, R. F.; Sehitoglu, H.; Efstathiou, C. et al.
In: Acta materialia, Vol. 54, No. 3, 02.2006, p. 587-599.

Research output: Contribution to journalArticleResearchpeer review

Hamilton, RF, Sehitoglu, H, Efstathiou, C, Maier, HJ & Chumlyakov, Y 2006, 'Pseudoelasticity in Co-Ni-Al single and polycrystals', Acta materialia, vol. 54, no. 3, pp. 587-599. https://doi.org/10.1016/j.actamat.2005.09.025
Hamilton, R. F., Sehitoglu, H., Efstathiou, C., Maier, H. J., & Chumlyakov, Y. (2006). Pseudoelasticity in Co-Ni-Al single and polycrystals. Acta materialia, 54(3), 587-599. https://doi.org/10.1016/j.actamat.2005.09.025
Hamilton RF, Sehitoglu H, Efstathiou C, Maier HJ, Chumlyakov Y. Pseudoelasticity in Co-Ni-Al single and polycrystals. Acta materialia. 2006 Feb;54(3):587-599. doi: 10.1016/j.actamat.2005.09.025
Hamilton, R. F. ; Sehitoglu, H. ; Efstathiou, C. et al. / Pseudoelasticity in Co-Ni-Al single and polycrystals. In: Acta materialia. 2006 ; Vol. 54, No. 3. pp. 587-599.
Download
@article{c5e624072d6247eabac76c0d97320ec0,
title = "Pseudoelasticity in Co-Ni-Al single and polycrystals",
abstract = "The pseudoelastic responses of heat-treated CoNiAl single crystals with [0 0 1] and [1 1 5] orientations, multicrystals of nominally [1 2 3] orientation, and polycrystals are investigated under tension and compression stress states. The highest transformation strains are found under pseudoelasticity for the [0 0 1] orientation in tension and compression as 6.2% and 4.1% respectively. Experiments reveal tension-compression asymmetry of the critical transformation stress and of the stress hysteresis. The pseudoelastic stress-strain response is limited in tension to a much narrower temperature range than that in compression. The levels of strain recovery and the size of the stress hysteresis reveal the influence of dissipative mechanisms. A thermodynamics framework is proposed for describing the role of plastic flow and the internal stress fields on the stress hysteresis behavior. Single crystals exhibit considerable recovery compared to polycrystals and multicrystals. Extensive transmission electron microscopy results confirm the increased plastic flow at the austenite-martensite interfaces and in the secondary phase.",
keywords = "Critical stress, Ferromagnetic shape memory alloy, Phase transformation, Pseudoelasticity, Shape memory",
author = "Hamilton, {R. F.} and H. Sehitoglu and C. Efstathiou and Maier, {H. J.} and Y. Chumlyakov",
note = "Funding Information: The work was supported by grants CMS-0428428, the National Science Foundation, Division of Civil and Mechanical Systems, and Deutsche Forschungsgemeinschaft (German portion of the work).",
year = "2006",
month = feb,
doi = "10.1016/j.actamat.2005.09.025",
language = "English",
volume = "54",
pages = "587--599",
journal = "Acta materialia",
issn = "1359-6454",
publisher = "Elsevier Ltd.",
number = "3",

}

Download

TY - JOUR

T1 - Pseudoelasticity in Co-Ni-Al single and polycrystals

AU - Hamilton, R. F.

AU - Sehitoglu, H.

AU - Efstathiou, C.

AU - Maier, H. J.

AU - Chumlyakov, Y.

N1 - Funding Information: The work was supported by grants CMS-0428428, the National Science Foundation, Division of Civil and Mechanical Systems, and Deutsche Forschungsgemeinschaft (German portion of the work).

PY - 2006/2

Y1 - 2006/2

N2 - The pseudoelastic responses of heat-treated CoNiAl single crystals with [0 0 1] and [1 1 5] orientations, multicrystals of nominally [1 2 3] orientation, and polycrystals are investigated under tension and compression stress states. The highest transformation strains are found under pseudoelasticity for the [0 0 1] orientation in tension and compression as 6.2% and 4.1% respectively. Experiments reveal tension-compression asymmetry of the critical transformation stress and of the stress hysteresis. The pseudoelastic stress-strain response is limited in tension to a much narrower temperature range than that in compression. The levels of strain recovery and the size of the stress hysteresis reveal the influence of dissipative mechanisms. A thermodynamics framework is proposed for describing the role of plastic flow and the internal stress fields on the stress hysteresis behavior. Single crystals exhibit considerable recovery compared to polycrystals and multicrystals. Extensive transmission electron microscopy results confirm the increased plastic flow at the austenite-martensite interfaces and in the secondary phase.

AB - The pseudoelastic responses of heat-treated CoNiAl single crystals with [0 0 1] and [1 1 5] orientations, multicrystals of nominally [1 2 3] orientation, and polycrystals are investigated under tension and compression stress states. The highest transformation strains are found under pseudoelasticity for the [0 0 1] orientation in tension and compression as 6.2% and 4.1% respectively. Experiments reveal tension-compression asymmetry of the critical transformation stress and of the stress hysteresis. The pseudoelastic stress-strain response is limited in tension to a much narrower temperature range than that in compression. The levels of strain recovery and the size of the stress hysteresis reveal the influence of dissipative mechanisms. A thermodynamics framework is proposed for describing the role of plastic flow and the internal stress fields on the stress hysteresis behavior. Single crystals exhibit considerable recovery compared to polycrystals and multicrystals. Extensive transmission electron microscopy results confirm the increased plastic flow at the austenite-martensite interfaces and in the secondary phase.

KW - Critical stress

KW - Ferromagnetic shape memory alloy

KW - Phase transformation

KW - Pseudoelasticity

KW - Shape memory

UR - http://www.scopus.com/inward/record.url?scp=29844458875&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2005.09.025

DO - 10.1016/j.actamat.2005.09.025

M3 - Article

AN - SCOPUS:29844458875

VL - 54

SP - 587

EP - 599

JO - Acta materialia

JF - Acta materialia

SN - 1359-6454

IS - 3

ER -

By the same author(s)