Transformation of Co-Ni-Al single crystals in tension

R. F. Hamilton; H. Sehitoglu; C. Efstathiou; H. J. Maier; Y. Chumlyakov; X. Y. Zhang

doi:10.1016/j.scriptamat.2005.01.032

Transformation of Co-Ni-Al single crystals in tension

R. F. Hamilton, H. Sehitoglu, C. Efstathiou, H. J. Maier, Y. Chumlyakov, X. Y. Zhang

Mechanical Science and Engineering

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

Abstract

We present for the first time pseudoelasticity and shape memory results on Co-Ni-Al single crystals in tension. The experimental transformation strains approached 6% in tension in the [1 1 5] orientation. Despite the considerable volume change (0.0447), the transformation exhibits remarkable pseudoelasticity and shape memory recoverability in tension. A theoretical treatment is presented to explain the tension compression asymmetry in the stress-strain response, the change in transformation hysteresis with stress, and the role of secondary phase on the transformation temperatures.

Original language	English (US)
Pages (from-to)	131-136
Number of pages	6
Journal	Scripta Materialia
Volume	53
Issue number	1
DOIs	https://doi.org/10.1016/j.scriptamat.2005.01.032
State	Published - Jul 2005

Keywords

Critical stress
Ferromagnetic shape memory alloy
Hysteresis
Phase transformation
Pseudoelasticity
Shape memory
Single crystals
Volumetric strain

ASJC Scopus subject areas

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

Online availability

10.1016/j.scriptamat.2005.01.032

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title = "Transformation of Co-Ni-Al single crystals in tension",

abstract = "We present for the first time pseudoelasticity and shape memory results on Co-Ni-Al single crystals in tension. The experimental transformation strains approached 6% in tension in the [1 1 5] orientation. Despite the considerable volume change (0.0447), the transformation exhibits remarkable pseudoelasticity and shape memory recoverability in tension. A theoretical treatment is presented to explain the tension compression asymmetry in the stress-strain response, the change in transformation hysteresis with stress, and the role of secondary phase on the transformation temperatures.",

keywords = "Critical stress, Ferromagnetic shape memory alloy, Hysteresis, Phase transformation, Pseudoelasticity, Shape memory, Single crystals, Volumetric strain",

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

note = "Funding Information: The work was supported by the National Science Foundation, Division of Civil and Mechanical Systems, grants CMS-0428428 and CMS-0332824, and Deutsche Forschungsgemeinschaft. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

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language = "English (US)",

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T1 - Transformation of Co-Ni-Al single crystals in tension

AU - Hamilton, R. F.

AU - Sehitoglu, H.

AU - Efstathiou, C.

AU - Maier, H. J.

AU - Chumlyakov, Y.

AU - Zhang, X. Y.

N1 - Funding Information: The work was supported by the National Science Foundation, Division of Civil and Mechanical Systems, grants CMS-0428428 and CMS-0332824, and Deutsche Forschungsgemeinschaft. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2005/7

Y1 - 2005/7

N2 - We present for the first time pseudoelasticity and shape memory results on Co-Ni-Al single crystals in tension. The experimental transformation strains approached 6% in tension in the [1 1 5] orientation. Despite the considerable volume change (0.0447), the transformation exhibits remarkable pseudoelasticity and shape memory recoverability in tension. A theoretical treatment is presented to explain the tension compression asymmetry in the stress-strain response, the change in transformation hysteresis with stress, and the role of secondary phase on the transformation temperatures.

AB - We present for the first time pseudoelasticity and shape memory results on Co-Ni-Al single crystals in tension. The experimental transformation strains approached 6% in tension in the [1 1 5] orientation. Despite the considerable volume change (0.0447), the transformation exhibits remarkable pseudoelasticity and shape memory recoverability in tension. A theoretical treatment is presented to explain the tension compression asymmetry in the stress-strain response, the change in transformation hysteresis with stress, and the role of secondary phase on the transformation temperatures.

KW - Critical stress

KW - Ferromagnetic shape memory alloy

KW - Hysteresis

KW - Phase transformation

KW - Pseudoelasticity

KW - Shape memory

KW - Single crystals

KW - Volumetric strain

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Transformation of Co-Ni-Al single crystals in tension

Abstract

Keywords

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