Academic literature on the topic 'Polycrystalline Ni-Ti'

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Journal articles on the topic "Polycrystalline Ni-Ti"

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Liu, Y., J. Hu, Y. Zhang, and Z. Guo. "Interface microstructure of the brazed zirconia and Ti-6Al-4V using Ti-based amorphous filler." Science of Sintering 45, no. 3 (2013): 313–21. http://dx.doi.org/10.2298/sos1303313l.

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The polycrystalline ZrO2?3mol.%Y2O3 was brazed to Ti-6Al-4V using a Ti47Zr28Cu14Ni11 (at.%) amorphous ribbon at 1123 K in a high vacuum. The microstructure of the interface and evolution mechanism of the joint was investigated. The experimental result showed that the typical interfacial microstructures of the joints consisted of ZrO2/TiO+TiO2+Cu2Ti4O+Ni2Ti4O/?-Ti+(Ti,Zr)2(Cu,Ni) eutectic/(Ti,Zr)2(Cu,Ni)/acicular Widmanst?ten structure/Ti-6Al-4V alloy. The microstructure of the brazed joint was related to the solution and chemical reaction among atoms during brazing. According to the mechanical
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Kim, J., Y. C. Choi, Hyoung Seop Kim, and Sun Ig Hong. "Biocompatibility and Mechanical Performance of Ni-Ti." Materials Science Forum 534-536 (January 2007): 1617–20. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1617.

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Biomimetic apatite deposition behaviors and mechanical performance for as-rolled and annealed Ni-Ti plates were investigated. Apatite nucleation and growth on Ni-Ti in SBF (simulated body fluid) was not appreciably influenced by heat treatment. But, the apatite deposition rate increased slightly by NaOH surface treatment. The nodular apatite on the deposited layer is favored on a macro-scale since the surface energy of polycrystalline apatite particles can be reduced by forming nodules. The weight gain after apatite deposition for Ni-Ti (0.004 g/cm2) after 10 days were found to be smaller that
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Liu, Binbin, Zhu Zhu, Caiyun Liu, Yao Wang, and Feng Ye. "Effect of Inserted Ti Layers on the Phase Transformation of Al/Ni Multilayer Foils." Coatings 12, no. 4 (2022): 453. http://dx.doi.org/10.3390/coatings12040453.

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The thin Ti layers were inserted in the interfaces of base Al/Ni multilayer foils to form the Al/Ti/Ni/Ti (ATNT) foils through magnetron deposition. Al and Ni were determined in the as-deposited foils, while the absence of Ti was due to the strongly textured polycrystalline structure. TEM analysis implied an asymmetric interface structure between the Ni/Ti/Al interfaces and Al/Ti/Ni interfaces. After annealing at 473 K and 573 K for 3 h, the phase composition was the same as the initial state, which changed to be Al3Ni2, Ni3(AlTi), Ni and a small amount of Al3Ti when the treating temperature r
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Liu, Dan Dan, Jochen Fiebig, Martin Peterlechner, et al. "Ti and Ni Grain Boundary Diffusion in B2 NiTi Compound." Defect and Diffusion Forum 363 (May 2015): 137–41. http://dx.doi.org/10.4028/www.scientific.net/ddf.363.137.

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The radiotracer technique was used to measure the grain boundary diffusion of44Ti and63Ni in slightly Ni-rich polycrystalline NiTi compound in the temperature range of 673 - 923 K. The temperature dependence of the grain boundary triple productP(P=sδDgb,sis the segregation coefficient,δis the grain boundary width, andDgbis the grain boundary diffusion coefficient) for Ti and Ni was determined. The triple products of both Ti and Ni grain boundary diffusion in NiTi reveal a unique behavior with significant deviations from an Arrhenius-type dependence. Probable evolution of the grain boundary str
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Hannequart, Philippe, Michaël Peigney, and Jean-François Caron. "A micromechanics-based model for polycrystalline Ni–Ti wires." Smart Materials and Structures 28, no. 8 (2019): 085040. http://dx.doi.org/10.1088/1361-665x/ab2b50.

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Titenko, Anatoliy N., and Lesya D. Demchenko. "Superelastic Deformation in Polycrystalline Fe-Ni-Co-Ti-Cu Alloys." Journal of Materials Engineering and Performance 21, no. 12 (2012): 2525–29. http://dx.doi.org/10.1007/s11665-012-0406-x.

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Rakitin, V. V., L. S. Feoktistova, M. V. Gapanovich, A. V. Stanchik, and D. M. Sedlovets. "STUDY OF ELECTROCHEMICAL SYNTHESIS FEATURES OF CNTS THIN FILMS ON TITANIUM AND TANTALUM FOIL SUBSTRATES." Электрохимия 59, no. 12 (2023): 884–93. http://dx.doi.org/10.31857/s0424857023120101.

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The features of electrochemical deposition of copper layer on titanium and tantalum flexible substrates, as well as modes of sequential electrochemical deposition of tin layer on Cu/Ti and Cu/Ta and nickel layer on Sn/Cu/Ti and Sn/Cu/Ta from corresponding electrolyte solutions were studied by cyclic voltammetry. Deposition potentials for each metal layer were determined taking into account the type of substrate, and a wide set of the Cu-Sn-Ni/Ti and Cu-Sn-Ni/Ta stable precursor films were synthesized. The stage of annealing in an active sulfur atmosphere (sulfurization) has been optimized in o
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Date, Hidefumi. "Effect of Strain Rates on the Transformation Behavior of Ni-Ti Alloy." Materials Science Forum 539-543 (March 2007): 3231–36. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.3231.

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In order to clarify the effect of strain rates on phase transformation behaviors of Ni-Ti alloy, a compressive test using a cylindrical specimen of polycrystalline Ni-Ti alloy of Ti-50.69 at% Ni was carried out at a high strain rate and a low strain rate. The transformation temperatures were determined by a differential scanning calorimeter (DSC) using a sample cut from a compressed specimen. The transformation temperatures of the specimens before deformation were Ms= 303 K, Mf = 287 K, As = 297 K and Af = 319 K, respectively. The compressive test was carried out using specimen heated from liq
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Yamamoto, Takaei, Akihiko Suzuki, Hiroki Cho, and Toshio Sakuma. "Transformation Behavior of Shape Memory Alloys in Multiaxial Stress State." Advances in Science and Technology 78 (September 2012): 46–51. http://dx.doi.org/10.4028/www.scientific.net/ast.78.46.

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The transformation behavior of shape memory alloys is simulated for complex loadings of stress, strain and temperature. Calculations are made by using the “Accommodation Model” which is a constitutive model for shape memory alloys considering the accommodation behavior of the transformation strain. Calculated results are presented for the transformation behavior in the axial and shear stress state. These results are compared with those obtained by the experiment where tube specimens of the Ti-Ni shape memory alloy are subjected to the axial and torsion loading. The proposed constitutive model
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Marciszko, Marianna, Andrzej Baczmański, Mirosław Wróbel, Wilfrid Seiler, Chedly Braham, and Krzysztof Wierzbanowski. "Different Grain Interaction Models Used for Interpretation of Lattice Strain Data Collected Using Grazing Incidence X-Ray Diffraction." Materials Science Forum 768-769 (September 2013): 26–30. http://dx.doi.org/10.4028/www.scientific.net/msf.768-769.26.

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Multireflection grazing incidence X-ray diffraction (MGIXD) was applied to measure residual stresses in thin surface layers and the problem of X-ray elastic constants (XEC) used for the interpretation of results was studied. To show the influence of the X-ray elastic constants on the interpretation of MGIDX results, polycrystalline materials having low (Ti alloy) and high elastic anisotropy of crystallites (Ni alloy) were investigated.
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Dissertations / Theses on the topic "Polycrystalline Ni-Ti"

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Xolin, Paul. "Contribution au développement d'une nouvelle génération de limes endodontiques en alliage à mémoire de forme monocristallin cuivreux." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0256.

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Les dernières avancées réalisées dans le domaine de l’instrumentation canalaire ont permis de rendre le traitement endodontique plus rapide et plus efficace. L’amélioration des limes endodontiques au travers des géométries instrumentales, mouvement de travail ou propriétés mécaniques du matériau constitutif de l’instrument ont rendu le traitement plus sûr dans la préservation de l’organe dentaire et des tissus parodontaux environnants. Néanmoins, peu de recherches se sont portées sur l’utilisation d’Alliage à Mémoire de Forme (AMF) différents du Nickel-Titane (Ni-Ti). Ce travail se propose d’é
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Conference papers on the topic "Polycrystalline Ni-Ti"

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Han, Jie, Wenyu An, Changbin Yu, et al. "The experimental research of the Polycrystalline Ni-Ti alloy grain deformation under load." In 2018 3rd International Workshop on Materials Engineering and Computer Sciences (IWMECS 2018). Atlantis Press, 2018. http://dx.doi.org/10.2991/iwmecs-18.2018.99.

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Siegmann, S., P. Kern, L. Rohr, and P. P. Bandyopadhyay. "Tribological and Corrosion Behavior of Vacuum Plasma Sprayed Ti-Zr-Ni Quasicrystalline Coatings." In ITSC2007, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. ASM International, 2007. http://dx.doi.org/10.31399/asm.cp.itsc2007p0931.

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Abstract This investigation deals with a study of the friction, wear and corrosion behavior of vacuum plasma sprayed quasicrystalline (QC) Ti41.5Zr41.5Ni17 coatings. During pin on disc experiments, a change in the mode of wear has been found to occur with corresponding changes in normal load and sliding velocity. The low thermal conductivity of quasicrystals and its brittleness play a vital role in determining the friction and wear behavior of such materials. When these coatings are subjected to rubbing for a longer period of time, wear occurs by subsurface crack propagation and subsequent del
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Antonov, S., M. Detrois, and S. Tin. "Precipitate Phase Stability and Compositional Dependence on Alloying Additions in Advanced Ni-Base Superalloys." In AM-EPRI 2016, edited by J. Parker, J. Shingledecker, and J. Siefert. ASM International, 2016. http://dx.doi.org/10.31399/asm.cp.am-epri-2016p0213.

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Abstract Modern polycrystalline Ni-base superalloys for advanced gas turbine engines have been a key component that has contributed to technological advances in propulsion and power generation. As advanced turbine engine designs are beginning to necessitate the use of materials with temperature and strength capabilities beyond those exhibited by existing materials, new alloying concepts are required to replace conventional Ni-base superalloys with conventional γ-γ’ microstructures. The phase stability of various high Nb content Ni-base superalloys exhibiting γ-γ’-δ -η microstructures have been
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