Compressive response of a single crystalline CoNiAl shape memory alloy

H. E. Karaca; I. Karaman; Y. I. Chumlyakov; D. C. Lagoudas; X. Zhang

doi:10.1016/j.scriptamat.2004.04.002

Compressive response of a single crystalline CoNiAl shape memory alloy

H. E. Karaca, I. Karaman, Y. I. Chumlyakov, D. C. Lagoudas, X. Zhang

Mechanical Engineering

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

64 Scopus citations

Abstract

The effects of crystallographic orientation and temperature on pseudoelasticity and recoverable strain levels under constant stress are revealed for the Co-31at.%Ni-27at.%Al alloy single crystals under compression. The single crystals demonstrate a perfect pseudoelasticity at temperatures as high as 170 °C, recoverable transformation strains of 4% along the [100] orientation and 2.5% along the [123] orientation, small stress hysteresis (<40 MPa) and high strength level against dislocation formation.

Original language	English
Pages (from-to)	261-266
Number of pages	6
Journal	Scripta Materialia
Volume	51
Issue number	3
DOIs	https://doi.org/10.1016/j.scriptamat.2004.04.002
State	Published - Aug 2004

Bibliographical note

Funding Information:
This work was supported by Army Research Office, contract no. DAAD 19-02-1-0261, NSF––Division of Materials Research, contract no. 0244126, and The US Civilian Research and Development Foundation, grant no. RE1-2525-TO-03.

Keywords

CoNiAl
Martensitic phase transformation
Pseudoelasticity
Shape memory alloys

ASJC Scopus subject areas

Materials Science (all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2004.04.002

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title = "Compressive response of a single crystalline CoNiAl shape memory alloy",

abstract = "The effects of crystallographic orientation and temperature on pseudoelasticity and recoverable strain levels under constant stress are revealed for the Co-31at.%Ni-27at.%Al alloy single crystals under compression. The single crystals demonstrate a perfect pseudoelasticity at temperatures as high as 170 °C, recoverable transformation strains of 4% along the [100] orientation and 2.5% along the [123] orientation, small stress hysteresis (<40 MPa) and high strength level against dislocation formation.",

keywords = "CoNiAl, Martensitic phase transformation, Pseudoelasticity, Shape memory alloys",

author = "Karaca, {H. E.} and I. Karaman and Chumlyakov, {Y. I.} and Lagoudas, {D. C.} and X. Zhang",

note = "Funding Information: This work was supported by Army Research Office, contract no. DAAD 19-02-1-0261, NSF––Division of Materials Research, contract no. 0244126, and The US Civilian Research and Development Foundation, grant no. RE1-2525-TO-03. ",

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T1 - Compressive response of a single crystalline CoNiAl shape memory alloy

AU - Karaca, H. E.

AU - Karaman, I.

AU - Chumlyakov, Y. I.

AU - Lagoudas, D. C.

AU - Zhang, X.

N1 - Funding Information: This work was supported by Army Research Office, contract no. DAAD 19-02-1-0261, NSF––Division of Materials Research, contract no. 0244126, and The US Civilian Research and Development Foundation, grant no. RE1-2525-TO-03.

PY - 2004/8

Y1 - 2004/8

N2 - The effects of crystallographic orientation and temperature on pseudoelasticity and recoverable strain levels under constant stress are revealed for the Co-31at.%Ni-27at.%Al alloy single crystals under compression. The single crystals demonstrate a perfect pseudoelasticity at temperatures as high as 170 °C, recoverable transformation strains of 4% along the [100] orientation and 2.5% along the [123] orientation, small stress hysteresis (<40 MPa) and high strength level against dislocation formation.

AB - The effects of crystallographic orientation and temperature on pseudoelasticity and recoverable strain levels under constant stress are revealed for the Co-31at.%Ni-27at.%Al alloy single crystals under compression. The single crystals demonstrate a perfect pseudoelasticity at temperatures as high as 170 °C, recoverable transformation strains of 4% along the [100] orientation and 2.5% along the [123] orientation, small stress hysteresis (<40 MPa) and high strength level against dislocation formation.

KW - CoNiAl

KW - Martensitic phase transformation

KW - Pseudoelasticity

KW - Shape memory alloys

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Compressive response of a single crystalline CoNiAl shape memory alloy

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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