Characterization of the shape memory properties of a Ni 45.3Ti39.7Hf10Pd5 alloy

E. Acar; H. E. Karaca; H. Tobe; R. D. Noebe; Y. I. Chumlyakov

doi:10.1016/j.jallcom.2013.06.030

Characterization of the shape memory properties of a Ni _45.3Ti_39.7Hf₁₀Pd₅ alloy

E. Acar, H. E. Karaca, H. Tobe, R. D. Noebe, Y. I. Chumlyakov

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

39 Scopus citations

Abstract

The load-biased shape memory and superelastic responses of a Ni _45.3Ti_39.7Hf₁₀Pd₅ polycrystalline alloy were investigated in compression. Transformation strain of up to 4.6% and work output of up to 29 J cm^-3 were determined from load-biased thermal cycling experiments. The alloy showed good superelastic behavior at 90 oC with recoverable strain of over 4%. It was also determined that the Ni _45.3Ti_39.7Hf₁₀Pd₅ alloy could develop two-way shape memory strain of 1.6% without an intense training process. Transmission electron microscopy (TEM) revealed that the internal twins formed in the martensite variants were h011i type II twins.

Original language	English
Pages (from-to)	297-302
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	578
DOIs	https://doi.org/10.1016/j.jallcom.2013.06.030
State	Published - 2013

Bibliographical note

Funding Information:
This work was supported by the NASA Fundamental Aeronautics Program, Aeronautical Sciences Project and the NASA EPSCOR program under Grant No.: NNX11AQ31A , KY EPSCoR RID program under Grant No.: 3049024332 and RFBR project with Grant No.: 10-03-0154-a .

Funding

This work was supported by the NASA Fundamental Aeronautics Program, Aeronautical Sciences Project and the NASA EPSCOR program under Grant No.: NNX11AQ31A , KY EPSCoR RID program under Grant No.: 3049024332 and RFBR project with Grant No.: 10-03-0154-a .

Funders	Funder number
National Aeronautics and Space Administration	NNX11AQ31A, 3049024332
Russian Foundation for Basic Research	10-03-0154-a

Keywords

High strength SMAs
High work output
Microstructure
NiTiHfPd alloys
Shape memory alloys
TWSME

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2013.06.030

Cite this

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title = "Characterization of the shape memory properties of a Ni 45.3Ti39.7Hf10Pd5 alloy",

abstract = "The load-biased shape memory and superelastic responses of a Ni 45.3Ti39.7Hf10Pd5 polycrystalline alloy were investigated in compression. Transformation strain of up to 4.6\% and work output of up to 29 J cm-3 were determined from load-biased thermal cycling experiments. The alloy showed good superelastic behavior at 90 oC with recoverable strain of over 4\%. It was also determined that the Ni 45.3Ti39.7Hf10Pd5 alloy could develop two-way shape memory strain of 1.6\% without an intense training process. Transmission electron microscopy (TEM) revealed that the internal twins formed in the martensite variants were h011i type II twins.",

keywords = "High strength SMAs, High work output, Microstructure, NiTiHfPd alloys, Shape memory alloys, TWSME",

author = "E. Acar and Karaca, \{H. E.\} and H. Tobe and Noebe, \{R. D.\} and Chumlyakov, \{Y. I.\}",

note = "Funding Information: This work was supported by the NASA Fundamental Aeronautics Program, Aeronautical Sciences Project and the NASA EPSCOR program under Grant No.: NNX11AQ31A , KY EPSCoR RID program under Grant No.: 3049024332 and RFBR project with Grant No.: 10-03-0154-a . ",

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AU - Acar, E.

AU - Karaca, H. E.

AU - Tobe, H.

AU - Noebe, R. D.

AU - Chumlyakov, Y. I.

N1 - Funding Information: This work was supported by the NASA Fundamental Aeronautics Program, Aeronautical Sciences Project and the NASA EPSCOR program under Grant No.: NNX11AQ31A , KY EPSCoR RID program under Grant No.: 3049024332 and RFBR project with Grant No.: 10-03-0154-a .

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N2 - The load-biased shape memory and superelastic responses of a Ni 45.3Ti39.7Hf10Pd5 polycrystalline alloy were investigated in compression. Transformation strain of up to 4.6% and work output of up to 29 J cm-3 were determined from load-biased thermal cycling experiments. The alloy showed good superelastic behavior at 90 oC with recoverable strain of over 4%. It was also determined that the Ni 45.3Ti39.7Hf10Pd5 alloy could develop two-way shape memory strain of 1.6% without an intense training process. Transmission electron microscopy (TEM) revealed that the internal twins formed in the martensite variants were h011i type II twins.

AB - The load-biased shape memory and superelastic responses of a Ni 45.3Ti39.7Hf10Pd5 polycrystalline alloy were investigated in compression. Transformation strain of up to 4.6% and work output of up to 29 J cm-3 were determined from load-biased thermal cycling experiments. The alloy showed good superelastic behavior at 90 oC with recoverable strain of over 4%. It was also determined that the Ni 45.3Ti39.7Hf10Pd5 alloy could develop two-way shape memory strain of 1.6% without an intense training process. Transmission electron microscopy (TEM) revealed that the internal twins formed in the martensite variants were h011i type II twins.

KW - High strength SMAs

KW - High work output

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KW - NiTiHfPd alloys

KW - Shape memory alloys

KW - TWSME

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