Cu-Al-Mn shape memory alloys
Gas Tungsten Arc Welding of Cu-Al-Mn Shape Memory Alloys
... 27 For a specific set of parameters (sample #11), full penetration of the Cu-Al-Mn specimen was obtained. Figure 14 depicts the welded specimen cross-sectional view, in which the welding zones are ...
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Estudo das propriedades termomecânicas de ligas Cu-Al-Mn com memória de forma
... the Cu-Al-Mn shape memory alloys were cast under ambient atmosphere, and characterized thought optical microscopy, X-ray diffraction, and differential scanning ...calorimetry. ...
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Laser Welding of Shape Memory Alloys
... As a consequence of the laser processing, it can be assumed that two distinct regions exist in a given sample: the non-affected base material, which possesses a significantly large bamboo-like grain size, and the ...
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Relationship Between Aluminum-RichIntermetallic Phases and Microhardness of a Horizontally Solidified AlSiMgFe Alloy
... Figure 7 shows SEM micrographs with EDS/mapping microanalysis for two longitudinal samples in the as- solidified ingot from the cooled interface. Microanalysis has been performed by mapping elements to a linear length ...
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Effect of Contact Temperature Rise During Sliding on the Wear Resistance of TiNi Shape Memory Alloys
... This set of tests was aimed at determining the dependence of wear resistance of these alloys on specimen temperature. A near equi‐atomic TiNi Ti‐ at‐%Ni alloy was prepared in a vacuum induction melting furnace. A ...
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Estudo de vacâncias em Cu e Al
... o estudo de estrutura eletrônica para sistemas metálicos com vacâncias é de grande interesse na cilI"acterízaçlo de defeitos nestes materiais, pois as técnicas [r] ...
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Correlation Between the Mechanical Cycling Behavior and Microstructure in Laser Welded Joints Using NiTi Memory Shape Alloys
... NiTi alloys are strongly dependent on the chemical composition and laser welding may cause compositional changes in the FZ and in the HAZ as a result of volatilization of elements (which may occur in the FZ), due ...
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Mat. Res. vol.16 número3
... Ti-Zr-Ni alloys, including Ti 53 Zr 27 Ni 20 , and concluded that the Ti-rich samples possess additional desorption peaks (one at 833 K and other at 983 K to the Ti 53 Zr 27 Ni 20 alloy), presumably because of the ...
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Influence of defects on the irreversible phase transition in the Fe-Pd doped with Co and Mn
... The stability at low temperatures of the thermoelastic martensite in FePdCo and FePdMn alloys is restricted by the irreversible FCT-BCT phase transformation. The appearance of dislocations, as a result of the FCT- ...
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Microstructural Characterization of a Laser Surface Remelted Cu-Based Shape Memory Alloy
... The microstructural characterization was carried out using optical (OM), scanning (SEM) and transmission electron microscopy (TEM), employing a Nikon EPIPHOT-300 optical microscope, a Hitachi Tabletop Microscope TM-1000 ...
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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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Mat. Res. vol.15 número3
... nanoparticles by ion milling. Synthetized nanoparticles have a homogenous size of around 3.2–3.5 nm. The chemical compositions of nanoparticles obtained qualitatively by EDX have confirmed the presence of the three ...
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Organominerais na alimentação de frango de corte
... o Mn aumenta a atividade da enzima superóxido dismutase, especialmente no interior da mitocôndria, seu uso também pode reduzir a oxidação degenerativa na carne, (Lu et ...
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J. Aerosp. Technol. Manag. vol.7 número4
... In aeronautics, “shape morphing” has been used to identify those aircrat that undergo certain geometrical changes to enhance or adapt to their mission proiles (Sola et al. 2010). here is not an exact ...
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Shape memory chitosan-based scaffolds for biomedical applications
... a shape memory effect are presented and characterized in this ...permanent shape of the device. For the proof of concept, the shape memory effect of chitosan was followed by compressive ...
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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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Model Equations of Shape Memory Effect - Nitinol
... Shape memory effect (SME) can be observed to a limited number of alloys, being characterized by recovery of original shape on heating above certain tem perature after significant deformation ...
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Thermoinduced plastic flow and shape memory effects
... in shape memory materials, such as one- and two-way memory ...Thus, shape memory effects may be explained to be thermoinduced plastic flow resulting from thermosensitive yielding and ...
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