Results 251 to 260 of about 20,042,377 (298)

Recent developments in high temperature shape memory alloys

MRS Proceedings, 1994
AbstractThe functional properties of Shape Memory Alloys (SMA's) are used succesfully at present in a variety of industrial and medical applications. The use of these materials in smart structures is now emerging in the field of aeronautic/space technology.
Beyer, J., Mulder, J.H.
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Development of High-Temperature Shape Memory Alloys

2020
Shape memory alloys are vigorous metallic smart materials used as actuators and sensors in great technology as smart systems. The term shape memory refers to the ability of certain materials to recall a shape; even later severe plastic deformations. Many researchers all over the world are engaged in the development of low-cost, high-temperature and ...
Shyam Singh Rawat, Raghvendra Sharma, Maneeram Singh Gurjar, Manoj Sharma   +3 more
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A Shape-Memory Alloy for High-Temperature Applications

JOM, 1982
An alloy based on the Cu-Al-Ni ternary system has been developed at the research center of Brown, Boveri & Co., Baden, Switzerland, which provides a fully reversible (two-way) shape memory effect at significantly higher temperatures than those afforded by commercial memory alloys such as NiTi and Cu-Zn-Al.
Thomas W. Duerig, Joachim Albrecht, Gernot H. Gessinger   +2 more
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A high-temperature shape-memory alloy Ni54Mn25Ga21

Applied Physics Letters, 2003
A high-temperature shape-memory alloy, Ni54Mn25Ga21, was developed with a shape-memory effect of 6.1% and a martensitic transformation temperature higher than 250 °C for single crystals. The measured compressive strength and strain were 845 MPa and 20.5%, respectively, with a compressive axis along the growth direction of the rods at room temperature ...
Huibin Xu, Yunqing Ma, Chengbao Jiang
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Alloying of ZrCu-based high temperature shape memory alloys

Journal de Physique IV (Proceedings), 2003
A systematic study was carried out by means of paramagnetic susceptibility measurements, X-ray diffractometry, and X-ray photoelectron spectroscopy (XPS) in order to determine crystal and electronic structure changes along with alloying additions. The experimental MT temperatures were compared with those calculated for ZrCu-based alloys with the help ...
G. S. Firstov, J. van Humbeeck, Yu. N. Noval, R. G. Vitchev   +3 more
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Mechanical and shape memory properties of Ni54Mn25Ga21 high-temperature shape memory alloy

Materials Science and Engineering: A, 2006
Abstract The mechanical properties and shape memory effect of polycrystalline Ni 54 Mn 25 Ga 21 (at.%) high-temperature shape memory alloy have been determined by measurement of the compressive stress–strain behavior at different temperatures. The Ni 54 Mn 25 Ga 21 alloy possesses a martensitic transformation temperature as high as 532 K and a ...
Yan Li, Yan Xin, Chengbao Jiang, Huibin Xu   +3 more
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High Temperature Shape Memory Alloys

Journal of Engineering Materials and Technology, 1999
Several alloy systems can be selected for high-temperature shape memory alloys, defined as alloys with stable reverse transformation temperatures above 120°C. However, due to the lack of minimum quality standards for stability, ductility, functional behavior and reliability, no successful applications have been realized so far.
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High‐Temperature Corrosion of NiTi‐Shape‐Memory Alloys

Materialwissenschaft und Werkstofftechnik, 2004
AbstractSemi‐finished products and components made of NiTi‐shape‐memory alloys (NiTi‐SMA) are often subjected to heat treatment after their fabrication. During this heat treatment, oxide layers begin to form which contain a high amount of titanium.In this investigation special attention was drawn to the selective oxidation of Ti because a TiOX‐layer ...
C. Heßing, S. Gabert, M. Pohl, I. Parezanović   +3 more
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Fabrication of quaternary high temperature shape memory alloys

AIP Conference Proceedings, 2019
In today’s technology, the useful materials attract more attention for sustainable of energy sources. Shape memory alloys (SMAs) are one of these useful materials due to their unique properties as pseudoelasticity and shape recovery property. SMAs can be classified as Cu-based (Cu-Zn, Cu-Al and Cu-Sn), Iron-based and NiTi.
H. Mustafa Ahmed, C. Aksu Canbay, İ. Özkul   +2 more
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TiAu and TiPt high temperature shape memory alloys

Proceedings of 2014 11th International Bhurban Conference on Applied Sciences & Technology (IBCAST) Islamabad, Pakistan, 14th - 18th January, 2014, 2014
Equiatomic TiAu and TiPt exhibit thermo-elastic martensitic phase transformation at high temperature. Phase transformation temperatures of TiPt (Af=1057°C) are about 400°C higher than TiAu (Af=624°C). However TiAu and TiPt exhibit partial shape memory effect and very low strength (e.g. ~120MPa for TiAu and ~20MPa for TiPt) in B2 phase region.
Abdul Wadood, Yoko Yamabe-Mitarai
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