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A lightweight shape-memory alloy with superior temperature-fluctuation resistance. [PDF]
NatureIn advanced applications such as aerospace and space exploration, materials must balance lightness, functionality and extreme thermal fluctuation resistance1,2. Shape-memory alloys show promise with strength, toughness and substantial strain recovery due
Song Y +13 more
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High-temperature shape memory properties of Cu15Ni35Ti25Hf12.5Zr12.5 high-entropy alloy
Journal of Materials Research and Technology, 2021 The major challenges hindering the application of high-temperature shape memory alloys are their decreased mechanical strength and thermal stability. Herein, we present high-temperature shape memory properties of the Cu15Ni35Ti25Hf12.5Zr12.5 high-entropy
Shan-Hsiu Chang +5 more
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Laser welding of H-phase strengthened Ni-rich NiTi-20Zr high temperature shape memory alloy
Materials & Design, 2021 Laser welding of a Ni-rich NiTi-20Zr (at.%) high temperature shape memory alloy was performed. The starting base material was aged for 3 h at 550 °C followed by air cooling prior to welding to induce H-phase precipitation.
J.P. Oliveira +6 more
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Materials & Design, 2020 In this study, we produced a novel Zr50Cu25Ni7.5Co17.5 high-temperature shape memory alloy with the aim of achieving high thermal stability and a good shape memory effect.
Weihong Gao +4 more
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A high-entropy high-temperature shape memory alloy with large and complete superelastic recovery
Materials Research Letters, 2021 High-temperature shape memory alloys (HTSMAs) show enormous potential for applications as energy conversion devices, actuators and sensors in automotive, aerospace, and energy exploration industries, but they suffer from strength decrease and ...
Shaohui Li +7 more
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Materials Research Letters, 2020 A Co-Ni-Ga high-temperature shape memory alloy has been additively manufactured by directed energy deposition. Due to the highly anisotropic microstructure, i.e.
C. Lauhoff +6 more
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Two way shape memory effect in NiTiHf high temperature shape memory alloy tubes
Acta Materialia, 2019 Abstract Two-way shape memory effect (TWSME) in nano-precipitation hardened, Ni50.3Ti29.7Hf20 high temperature shape memory alloy (HTSMA) thin walled tubes and its thermal stability were investigated. Torsional TWSME was induced by repeated thermal cycling across their martensitic transformation under applied shear stress.
C. Hayrettin +5 more
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Machinability of Ni-rich NiTiHf high temperature shape memory alloy
Smart Materials and Structures, 2019 Machining of Ni-rich Ni50.3Ti29.7Hf20 (at%) high temperature shape memory alloys was evaluated under flood cooling conditions. Effects of various cutting speeds (between 20 and 120 m min−1), depth of cuts (between 0.4 and 1 mm), and the associated cutting forces on the work-piece surface quality and tool wear of this alloy are presented.
K E Kirmacioglu, Y Kaynak, O Benafan
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Materials & Design, 2020 Great interests on high temperature shape memory alloys (HTSMAs) are recently raised, driven primarily by the aerospace and automotive industries, for their potential to serve as solid state actuators at high temperatures over 373 K.
Jian Zhang +4 more
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The effect of vanadium and nickel on the microstructure and transformation temperatures of Ti50Pt50 alloy [PDF]
MATEC Web of Conferences, 2022 Significant research has been done to produce shape memory alloys that have good shape memory properties and high martensitic transformation temperatures. The Ti50Pt50 alloys have been found to have high transformation temperature of around 1050℃ however,
Motsai Tebogo +6 more
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