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Shape memory properties of the Ti36Ni49Hf15 high temperature shape memory alloy
Materials Letters, 2000Abstract The shape memory properties have been studied in a Ti 36 Ni 49 Hf 15 high temperature shape memory alloy (SMA) by bending tests. The shape memory effect (SME) of the alloy is closely related to the deformation condition. It shows about 3% completely reversible strain when the TiNiHf alloy is deformed at the room temperature.
X.L Meng, Y.F Zheng, Z Wang, L.C Zhao
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Two-way shape memory effect of a TiNiHf high temperature shape memory alloy
Journal of Alloys and Compounds, 2004The two-way shape memory effect in a Ti36Ni49Hf15 high temperature shape memory alloy (SMA) has been systematically studied by bending tests. In the TiNiHf alloy, the martensite deformation is an effective method to get two-way shape memory effect even with a small deformation strain.
X.L Meng, Y.F Zheng, W Cai, L.C Zhao
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Scripta Materialia, 2008
Ni56Mn21Co4Ga19 alloys have been successfully hot-rolled to smooth plates of 0.5 mm thickness, and the mechanical and shape memory characteristics were investigated by tensile tests. The results show that the tensile stress and strain of dual-phases Ni56Mn21 Co4Ga19 alloy are 491 MPa and 8.17%, respectively.
Ma, Y. Q. +3 more
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Ni56Mn21Co4Ga19 alloys have been successfully hot-rolled to smooth plates of 0.5 mm thickness, and the mechanical and shape memory characteristics were investigated by tensile tests. The results show that the tensile stress and strain of dual-phases Ni56Mn21 Co4Ga19 alloy are 491 MPa and 8.17%, respectively.
Ma, Y. Q. +3 more
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High temperature shape memory alloys
International Materials Reviews, 2010Shape memory alloys (SMAs) with high transformation temperatures can enable simplifications and improvements in operating efficiency of many mechanical components designed to operate at tem...
J Ma, I Karaman, R D Noebe
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A Shape-Memory Alloy for High-Temperature Applications
JOM, 1982An 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 +2 more
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A high-temperature shape-memory alloy Ni54Mn25Ga21
Applied Physics Letters, 2003A 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), 2003A 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 +3 more
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Mechanical and shape memory properties of Ni54Mn25Ga21 high-temperature shape memory alloy
Materials Science and Engineering: A, 2006Abstract 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 +3 more
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Development of High-Temperature Shape Memory Alloys
2020Shape 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 +3 more
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High‐Temperature Corrosion of NiTi‐Shape‐Memory Alloys
Materialwissenschaft und Werkstofftechnik, 2004AbstractSemi‐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 +3 more
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