Experimental Analysis of Ultra-High Strength NiTiHfPd Shape Memory Alloys

Emre Acar; Soheil Saedi; Haluk E. Karaca

doi:10.1007/s11665-023-08268-8

Experimental Analysis of Ultra-High Strength NiTiHfPd Shape Memory Alloys

Emre Acar, Soheil Saedi, Haluk E. Karaca

Producción científica: Article › revisión exhaustiva

Resumen

Ultra-high strength of NiTiHfPd alloys have been promising for specific application areas of SMAs. Thus, the main objective of this study is to further understand the high strength behavior of the alloys through experimental and theoretical studies. Shape memory response of an ultra-high strength Ni_45.3Ti_29.7Hf₂₀Pd₅ alloy was systematically investigated after aging at 550 °C for 5 h via constant-stress temperature cycling and constant-temperature stress cycling experiments. Shape memory behavior under a wide range of compressive stress levels from 300 to 1200 MPa was reported before and after stress cycling of 5000 times. The alloys showed a reversible strain of 1.3% against an ultra-high stress of 2 GPa. It is concluded that the combination of high strength and temperature capability mainly stems from high chemical complexity in addition to aging and will be quite advantageous in practical applications.

Idioma original	English
Páginas (desde-hasta)	4640-4646
Número de páginas	7
Publicación	Journal of Materials Engineering and Performance
Volumen	33
N.º	9
DOI	https://doi.org/10.1007/s11665-023-08268-8
Estado	Published - may 2024

Nota bibliográfica

Publisher Copyright:
© ASM International 2023.

Financiación

This work was supported in part by the NSF CMMI-15-38665, the NASA EPSCOR program under grant No: NNX11AQ31A, KY EPSCoR RID program under grant No: 3049024332.

Financiadores	Número del financiador
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China	CMMI-15-38665
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China
National Aeronautics and Space Administration	NNX11AQ31A, 3049024332
National Aeronautics and Space Administration

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1007/s11665-023-08268-8

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title = "Experimental Analysis of Ultra-High Strength NiTiHfPd Shape Memory Alloys",

abstract = "Ultra-high strength of NiTiHfPd alloys have been promising for specific application areas of SMAs. Thus, the main objective of this study is to further understand the high strength behavior of the alloys through experimental and theoretical studies. Shape memory response of an ultra-high strength Ni45.3Ti29.7Hf20Pd5 alloy was systematically investigated after aging at 550 °C for 5 h via constant-stress temperature cycling and constant-temperature stress cycling experiments. Shape memory behavior under a wide range of compressive stress levels from 300 to 1200 MPa was reported before and after stress cycling of 5000 times. The alloys showed a reversible strain of 1.3\% against an ultra-high stress of 2 GPa. It is concluded that the combination of high strength and temperature capability mainly stems from high chemical complexity in addition to aging and will be quite advantageous in practical applications.",

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AU - Acar, Emre

AU - Saedi, Soheil

AU - Karaca, Haluk E.

N1 - Publisher Copyright: © ASM International 2023.

PY - 2024/5

Y1 - 2024/5

N2 - Ultra-high strength of NiTiHfPd alloys have been promising for specific application areas of SMAs. Thus, the main objective of this study is to further understand the high strength behavior of the alloys through experimental and theoretical studies. Shape memory response of an ultra-high strength Ni45.3Ti29.7Hf20Pd5 alloy was systematically investigated after aging at 550 °C for 5 h via constant-stress temperature cycling and constant-temperature stress cycling experiments. Shape memory behavior under a wide range of compressive stress levels from 300 to 1200 MPa was reported before and after stress cycling of 5000 times. The alloys showed a reversible strain of 1.3% against an ultra-high stress of 2 GPa. It is concluded that the combination of high strength and temperature capability mainly stems from high chemical complexity in addition to aging and will be quite advantageous in practical applications.

AB - Ultra-high strength of NiTiHfPd alloys have been promising for specific application areas of SMAs. Thus, the main objective of this study is to further understand the high strength behavior of the alloys through experimental and theoretical studies. Shape memory response of an ultra-high strength Ni45.3Ti29.7Hf20Pd5 alloy was systematically investigated after aging at 550 °C for 5 h via constant-stress temperature cycling and constant-temperature stress cycling experiments. Shape memory behavior under a wide range of compressive stress levels from 300 to 1200 MPa was reported before and after stress cycling of 5000 times. The alloys showed a reversible strain of 1.3% against an ultra-high stress of 2 GPa. It is concluded that the combination of high strength and temperature capability mainly stems from high chemical complexity in addition to aging and will be quite advantageous in practical applications.

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KW - martensite

KW - shape memory alloy

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Experimental Analysis of Ultra-High Strength NiTiHfPd Shape Memory Alloys

Resumen

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ASJC Scopus subject areas

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