Results 261 to 270 of about 20,042,377 (298)

The superelasticity of TiPdNi high temperature shape memory alloy

Intermetallics, 2003
Abstract In the high temperature shape memory alloy (HTSMA) Ti 51 Pd 30 Ni 19 , superelasticity is found for the first time and the superelasticity is quite different from that of NiTi or CuZnAl. The recoverable superelastic strain is 7% without failure of the specimen.
Jiansheng Wu, Qingchao Tian
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Characteristics of Ti50Pd30Ni20 high-temperature shape memory alloy

Intermetallics, 1995
The decrease in critical stress for slip with increasing temperature leads to the introduction of permanent strain and thus deteriorates shape memory (SM) characteristics of high-temperature SM alloys. Thermomechanical treatment consisting of cold-rolling and subsequent annealing at various temperatures, was applied for the first time to improve the ...
Golberg, D., Xu, Ya, Murakami, Y., Morito, S., Otsuka, K., Ueki, T., Horikawa, H.   +6 more
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High Temperature Shape Memory Alloys Problems and Prospects

Journal of Intelligent Material Systems and Structures, 2006
In this article, a review of the existing high temperature shape memory alloy (HTSMA) systems is given. Certain crucial disadvantages general to all HTSMAs and related to structural mechanisms of the martensitic transformation (MT) taking place at elevated temperatures are described. The perspectives of the HTSMA's application are also discussed.
G. S. Firstov, J. Van Humbeeck, Yu. N. Koval   +2 more
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High temperature shape memory behavior of Ni47.3Ti29.7Hf20Pd3 alloys

Intermetallics, 2019
Abstract The shape memory properties of Ni47.3Ti29.7Hf20Pd3 alloys were investigated through stress-free thermal cycling, constant-stress thermal cycling and constant-temperature stress cycling experiments. The alloys showed reversible phase transformations above 180 °C, which makes them suitable for high temperature shape memory applications ...
ACAR, EMRE, Karaca, Haluk E., Toker, Guher P., Kurkcu, Harun   +3 more
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Quaternary alloying of copper with Ti50Ni25Pd25 high temperature shape memory alloys

Materials Science and Engineering: A, 2019
Abstract High temperature shape memory alloys with four different compositions i.e. Ti50Ni25-xPd25Cux (x = 0, 5, 10, 15 at.%) were developed, characterized and tested for mechanical and shape memory properties. For simplicity, the alloys were named as 0Cu, 5Cu, 10Cu and 15Cu alloys depending upon the concentration of Cu. Addition of Cu in place of Ni
Saif ur Rehman, Mushtaq Khan, A. Nusair Khan, Liaqat Ali, Syed Imran Husain Jaffery, Muhammad Khurram   +5 more
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Martensite aging – Avenue to new high temperature shape memory alloys

Acta Materialia, 2015
Abstract High-temperature shape memory alloys are attractive for efficient solid state actuation. A key criterion for shape memory alloys is the martensite start temperature. The current study introduces a concept for increasing this temperature of alloys initially not suited for high-temperature actuation.
Niendorf, Thomas, Somsen, Christoph, Eggeler, Gunther, Chumlyakov, Yuri I., Maier, Hans Jürgen, Krooß, Philipp   +5 more
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Diffraction Investigations of High Temperature Shape Memory Alloys

2013
Shape memory alloys are intermetallic materials with a unique ability to revert to a predefined physical shape by virtue of diffusionless transformations. Recent interest by aerospace and automotive industries to exploit the functionalities of these materials in future energy efficient designs has renewed scientific research in this field. However, the
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Precipitation hardenable high temperature shape memory alloy [PDF]

, 2010
A composition of the invention is a high temperature shape memory alloy having high work output, and is made from (Ni+Pt+Y),Ti(100-x) wherein x is present in a total amount of 49-55 atomic % Pt is present in a total amount of 10-30 atomic %, Y is one or ...
NOEBE RONALD DEAN, DRAPER SUSAN L, NATHAL MICHAEL V, CROMBIE EDWIN A   +3 more
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Processing and Properties of High Temperature Shape Memory Alloys

International Conference on Shape Memory and Superelastic Technologies
Abstract Shape memory alloy (SMA) processing parameters play a critical role in determining phase transformation behavior, strain recovery, and total work output. This study casts compositionally equivalent SMAs using multiple techniques to vary heating and cooling rates, characterizes the resulting microstructures by optical ...
Andrew Johnson, Naresh Thadhani, Aaron Stebner   +2 more
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High-temperature shape memory alloys

Materials Science and Engineering: A, 2004
G.S Firstov, J Van Humbeeck, Y.N Koval
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