Shape memory alloys
Shape Memory Alloys
... Shape memory alloys (SMAs) are metals that "remember" their original ..."change shape, stiffness, position, natural frequency, and other mechanical characteristics in response to ...
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Releasing systems for aerospace industry based upon Shape Memory Alloys: characterization of materials for actuators
... Releasing and deployment maneuvers carried out during space satellites launching are usually performed by utilizing pyrotechnics loads. However, it is considered convenient to replace this technique by others not ...
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Shape Memory Alloys (Part II): Classification, Production and Application
... Numerous alloys show shape memory effect (NiTi-based alloys, Cu-based alloys, Fe-based alloys ...NiTi alloys have greater shape memory strain and excellent ...
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Impact of Alloy Composition and Thermal Stabilization on Martensitic Phase Transformation Structures in CuAlMn Shape Memory Alloys
... Shape memory alloys exhibit high damping properties mainly due to thermoelastic martensitic phase transformations, which are related to the energy loss by the movement of the parental martensite ...
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Gas Tungsten Arc Welding of Cu-Al-Mn Shape Memory Alloys
... Cu-based shape memory alloys, the recoverable strain depends on the grain size (d) relative to the size of the specimen, for sheet thickness (t) or wire diameter (D), and increases with increasing ...
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Effect of Contact Temperature Rise During Sliding on the Wear Resistance of TiNi Shape Memory Alloys
... constant load and ambient temperature but at varying sliding speed. )n both cases wear level fell with the increase in temperature and the results agree well with the theoretical prediction. The results are of importance ...
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Medical applications of shape memory alloys
... cannot take anticoagulant medicines are the major users of the Simon filter (26). The purpose of this device is to filter clots that travel inside the bloodstream. The Simon filter traps these clots that in time are dis- ...
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VIBRATION CONTROL WITH SHAPE-MEMORY ALLOYS
... The other manifestation of the thermoelastic martensitic transformation in SMAs is the so called shape-memory effect. Whereas stressed induced martensite consists of a single preferential variant according ...
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Laser Welding of Shape Memory Alloys
... NiTi/NiTi laser welded joints have already been studied in the literature, however the microstructural modifications induced by the welding procedure and its correlation with both shape memory and ...
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Soldag. insp. vol.17 número3
... for shape memory alloys (SMA) has become of great importance, as their functional properties namely shape memory effect (SME) and superelasticity (SE) present unique solutions for ...
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Shape Memory Alloy Actuator forBio-medical application
... of shape memory alloys (SMA) in bio-medical field based upon their material properties are discussed, and a novel SMA spring actuator design for biopsy is ...
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J. Aerosp. Technol. Manag. vol.7 número4
... SMA has already been used in aeronautical industry as actuator in an active serrated aerodynamic device known as a variable geometry chevron (VGC) capable of reducing noise during take-of (Jani et al. 2014). Indeed, the ...
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Gas Tungsten Arc Welding of NiTi Shape Memory Alloy
... Shape memory alloys are characterized by the ability of recovering their initial shape after being deformed and by ...these alloys, a new field of interest emerged not only for the ...
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Mat. Res. vol.18 suppl.2
... The results obtained showed that is possible to produce samples of Cu-based shape memory alloys by the combination of atomization and selective laser melting. The samples exhibited a relative density ...
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Investigation of the bainitic reaction in a CuAlNiMnFe shape memory alloy
... CuAlNi shape memory alloys limits their ...CuAlNiMnFe alloys as functional materials, the effect of ageing on the thermoelastic martensitic transformation was ...these alloys is ...
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Microstructural Characterization of a Laser Surface Remelted Cu-Based Shape Memory Alloy
... Cu-based shape memory alloys (SMAs) present some advantages as higher transformation temperatures, lower costs and are easier to process than traditional Ti-based SMAs but they also show some ...
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Mat. Res. vol.4 número3
... Shape memory alloys (SMA’s), classified as “smart” metallic materials, are sensitive to temperature and/or stress producing a large macroscopic strain as a result of a ther- moelastic martensitic ...
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Mat. Res. vol.20 número6
... the shape memory efect (SME) displayed by shape memory alloys (SMAs) like the CuAlNi presently ...(Nitinol) alloys. In terms of processing, CuAlNi alloys display less ...
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Mat. Res. vol.13 número3
... Ti-Ni shape memory alloys but lightly rich in nickel can during heat treatment at elevated temperatures to form precipitates such as Ti 3 Ni 4 , Ti 2 Ni 3 and TiNi 3 8-10 ...
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