Thermal and stress-induced martensitic transformations in NiFeGa single crystals under tension and compression

R. F. Hamilton; C. Efstathiou; H. Sehitoglu; Y. Chumlyakov

doi:10.1016/j.scriptamat.2005.10.003

Thermal and stress-induced martensitic transformations in NiFeGa single crystals under tension and compression

R. F. Hamilton, C. Efstathiou, H. Sehitoglu, Y. Chumlyakov

Mechanical Science and Engineering

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

Abstract

Heat treatment and stress state effects on the martensitic transformation in [0 0 1] and [1 2 3] oriented single crystal Ni54Fe19Ga27 alloys are determined. Characteristic temperatures increase for longer aging times and higher hold temperatures. The non-aged [0 0 1] crystals exhibit the smallest stress hysteresis and lowest critical stress in tension. The experimental results are interpreted based on the role of ordering and the second phase on changes in transformation temperatures and hysteresis.

Original language	English (US)
Pages (from-to)	465-469
Number of pages	5
Journal	Scripta Materialia
Volume	54
Issue number	3
DOIs	https://doi.org/10.1016/j.scriptamat.2005.10.003
State	Published - Feb 2006

Keywords

Critical stress
Ferromagnetic shape memory alloy
Phase transformation
Pseudoelasticity
Shape memory
Single crystal

ASJC Scopus subject areas

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

Online availability

10.1016/j.scriptamat.2005.10.003

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title = "Thermal and stress-induced martensitic transformations in NiFeGa single crystals under tension and compression",

abstract = "Heat treatment and stress state effects on the martensitic transformation in [0 0 1] and [1 2 3] oriented single crystal Ni54Fe19Ga27 alloys are determined. Characteristic temperatures increase for longer aging times and higher hold temperatures. The non-aged [0 0 1] crystals exhibit the smallest stress hysteresis and lowest critical stress in tension. The experimental results are interpreted based on the role of ordering and the second phase on changes in transformation temperatures and hysteresis.",

keywords = "Critical stress, Ferromagnetic shape memory alloy, Phase transformation, Pseudoelasticity, Shape memory, Single crystal",

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

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

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language = "English (US)",

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AU - Hamilton, R. F.

AU - Efstathiou, C.

AU - Sehitoglu, H.

AU - Chumlyakov, Y.

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

PY - 2006/2

Y1 - 2006/2

N2 - Heat treatment and stress state effects on the martensitic transformation in [0 0 1] and [1 2 3] oriented single crystal Ni54Fe19Ga27 alloys are determined. Characteristic temperatures increase for longer aging times and higher hold temperatures. The non-aged [0 0 1] crystals exhibit the smallest stress hysteresis and lowest critical stress in tension. The experimental results are interpreted based on the role of ordering and the second phase on changes in transformation temperatures and hysteresis.

AB - Heat treatment and stress state effects on the martensitic transformation in [0 0 1] and [1 2 3] oriented single crystal Ni54Fe19Ga27 alloys are determined. Characteristic temperatures increase for longer aging times and higher hold temperatures. The non-aged [0 0 1] crystals exhibit the smallest stress hysteresis and lowest critical stress in tension. The experimental results are interpreted based on the role of ordering and the second phase on changes in transformation temperatures and hysteresis.

KW - Critical stress

KW - Ferromagnetic shape memory alloy

KW - Phase transformation

KW - Pseudoelasticity

KW - Shape memory

KW - Single crystal

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Thermal and stress-induced martensitic transformations in NiFeGa single crystals under tension and compression

Abstract

Keywords

ASJC Scopus subject areas

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