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Journal articles on the topic '%Nb alloy'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Murayama, Yonosuke, and Hiroto Shioiri. "Phase Stability and Mechanical Properties of Metastable Ti-X-Sn-Zr (x=Cr, Nb or Fe) Alloys." Materials Science Forum 941 (December 2018): 1228–31. http://dx.doi.org/10.4028/www.scientific.net/msf.941.1228.

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Metastable beta Ti-Cr-Sn-Zr alloys used as biomaterial show low Young’s modulus and super-elasticity according to the phase stability of their beta phase. In this study, we substituted Nb and Fe for Cr in metastable beta Ti-2Cr-6Sn-45Zr alloy and investigated their effect. We investigated how the added amount of Cr, Nb and Fe influences the phase stability and the properties of low Young’s modulus and super-elasticity in Ti-x-Sn-Zr (x=Cr, Nb or Fe) alloys. The Young’s modulus of a Ti-x-Sn-Zr (x=Cr, Nb or Fe) alloy decreases with the addition of Cr, Nb or Fe. However, the Young’s modulus of a T

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2

Yamazaki, Yoshihiro, Takahiro Iida, Yoshiaki Iijima, and Yuh Fukai. "Diffusion of Nb in Nb-H Alloys." Defect and Diffusion Forum 237-240 (April 2005): 346–51. http://dx.doi.org/10.4028/www.scientific.net/ddf.237-240.346.

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Self-diffusion coefficient of 95Nb in NbHx alloys (x=0.05,0.25 and 0.3) has been determined in the temperature range from 823 to 1323 K by using a serial sputter-microsectioning technique. The self-diffusion coefficient of Nb in the NbHx alloys are larger than that in Nb, suggesting that vacancies are formed by hydrogen dissolution, that is, the formation of hydrogen-induced vacancies. The value of the pre-exponential factor for the Nb diffusion in the NbH0.05 alloy is five times larger than that in Nb, while the difference in the activation energies between the NbH0.05 alloy and pure Nb is sm

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3

Lu, Bai Ping, Jun Zhe Zhang, and Yu Feng Fang. "Effects of Nb Element on Mircostructure, Thermal Conductivity and Melting Point of Cu-Ni-Nb Alloy Prepared by Vacuum Arc-Melting." Advanced Materials Research 941-944 (June 2014): 8–12. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.8.

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Effects of niobium element adding method and addition content on the microstructure, thermal conductivity and melting point of Cu-Ni-Nb alloys prepared by vacuum non-consumable arc-melting were studied. We found that it is difficult to dissolve high melting point element Nb into Cu-Ni alloy by one-step smelting. However, Nb can be dissolved into Cu-Ni alloy in style of Nb-Ni master alloy by two-steps smelting. New phases Ni3Nb and Ni8Nb generate in matrix of Cu-Ni alloy. In addition, the thermal conductivity coefficient of Cu-Ni-Nb alloy increases as increasing the content of Nb, while melting

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4

Ghadyani, Mohammad, Claire Utton, and Panos Tsakiropoulos. "Microstructures and Isothermal Oxidation of the Alumina Scale Forming Nb1.45Si2.7Ti2.25Al3.25Hf0.35 and Nb1.35Si2.3Ti2.3Al3.7Hf0.35 Alloys." Materials 12, no. 5 (2019): 759. http://dx.doi.org/10.3390/ma12050759.

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Coating system(s) will be required for Nb-silicide based alloys. Alumina forming alloys that are chemically compatible with the Nb-silicide based alloy substrate could be components of such systems. The intermetallic alloys Nb1.45Si2.7Ti2.25Al3.25Hf0.35 (MG5) and Nb1.35Si2.3Ti2.3Al3.7Hf0.35 (MG6) were studied in the cast, heat treated and isothermally oxidised conditions at 800 and 1200 °C to find out if they are αAl2O3 scale formers. A (Al/Si)alloy versus Nb/(Ti + Hf)alloy map, which can be considered to be a map for Multi-Principle Element or Complex Concentrated Nb-Ti-Si-Al-Hf alloys, and a

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5

Ding, Xiao Fei, Yi Tan, Yong Shen, Fu Gang Wang, and Jenn Ming Yang. "High Temperature Oxidation Behavior and Strength of Ti-Al-Nb Ternary Alloys." Key Engineering Materials 297-300 (November 2005): 403–8. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.403.

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Three types of Ti-Al-Nb ternary alloys are obtained by arc-melting and heat treatment, which are γ-TiAl single phase alloy, γ-TiAl + α2-Ti3Al duplex phase alloy, and γ-TiAl +α2-Ti3Al +Nb2Al multiple phase alloy. The phase stability is studied using optical microscope, X-ray diffractometer and electron probe microanalyzer. The oxidation behavior of three Ti-Al-Nb ternary alloys with different microstructures was investigated at 1273K using interrupted oxidation test in air. The compression test was carried out at 298K-1373K. The oxidation resistance of Ti-Al-Nb ternary alloy at high temperature

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6

Ueda, K., M. Omiya, Y. Hirose та T. Narushima. "Development of α+β-type biomedical Ti–Nb alloys with high oxygen content". MATEC Web of Conferences 321 (2020): 05003. http://dx.doi.org/10.1051/matecconf/202032105003.

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Ti-(5–20)Nb-(0.5–1)O alloys (mass%) were investigated for developing low-cost biomedical α+β-type Ti alloy. Ti-(5, 10, 15, 20)Nb-(0.5, 0.75, 1)O alloys (mass%) were arc-melted and forged into bars. The forged alloy bars were heat-treated at 873 to 1373 K for 3.6 ks in an Ar atmosphere and quenched in iced water. β transus (Tβ) of the Ti-Nb-O alloys decreased with increasing Nb content. An increase in the oxygen content led to an increase in Tβ. After quenching, the formation of α′ martensite was observed in Ti-5Nb-yO alloys. An increase in the Nb content to 10 mass% led to the formation of α′

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7

Li, Sheng, Minshi Wang, Khamis Essa, Chunlei Gan, Chunyan Liu, and Moataz Attallah. "Effect of Stoichiometry on Shape Memory Properties of Ti-Ni-Hf-Cu-Nb Shape Memory Alloys Manufactured by Suspended Droplet Alloying." Solids 3, no. 1 (2022): 1–21. http://dx.doi.org/10.3390/solids3010001.

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A novel Ti-Ni-Hf-Cu-Nb shape memory alloy has been developed by a new combinatorial alloy synthesis method, the Suspended Droplet Alloying. The influence of alloying elements on the transformation temperature, the microstructure and the shape memory effect of this alloy have also been studied. It was found that Cu has a greater negative influence on the transformation temperature of Ti-Ni-Hf-CuX alloys (about −5 K/at.%) than on the Ti-Ni-CuX alloys (−0.67 K/at.%). In addition, the negative effect intensifies with increasing Hf content. The transformation temperature rapidly decreases with incr

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8

Ozerov, Maxim, Vitaly Sokolovsky, Marina Gazizova, et al. "Biocompatibility, Corrosion Resistance, and Wear Resistance of TiNbZr-Based Composites Reinforced with Borides." Metals 15, no. 3 (2025): 240. https://doi.org/10.3390/met15030240.

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TiNbZr-(Ti,Nb)B composites were produced by vacuum arc melting; the weights of TiB2 in the charge mixture were 0.7 wt. % (Alloy A) and 4.0 wt. % (Alloy B). In addition, unreinforced TiNbZr alloy specimens were fabricated without the addition of TiB2. The microstructure of the TiNbZr-(Ti,Nb)B composites consisted of the TiNbZr β matrix and (Ti,Nb)B fibers. The (Ti,Nb)B fibers had a needle-like shape with an average diameter of ~0.4 and ~2.0 µm for Alloys A and B, respectively. The volume fraction of borides was found to be ~2.5 and ~12.4% for Alloys A and B, respectively. The presence of 12.4 v

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9

Yang, Shui Yuan, Cui Ping Wang, Yu Su, and Xing Jun Liu. "Evolutions of Microstructure and Phase Transformation in Cu-Al-Fe-Nb/Ta High-Temperature Shape Memory Alloys." Materials Science Forum 833 (November 2015): 67–70. http://dx.doi.org/10.4028/www.scientific.net/msf.833.67.

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The evolutions of microstructure and phase transformation behavior of Cu-Al-Fe-Nb/Ta high-temperature shape memory alloys under the quenched and aged states were investigated in this study, including Cu-10wt.% Al-6wt.% Fe, Cu-10wt.% Al-4wt.% Fe-2wt.% Nb and Cu-10wt.% Al-4wt.% Fe-2wt.% Ta three types alloys. The obtained results show that after quenching, Cu-10wt.% Al-6wt.% Fe alloy exhibits two-phase microstructure of β′1 martensite + Fe (Al,Cu) phase; Cu-10wt.% Al-4wt.% Fe-2wt.% Nb alloy also has two-phase microstructure of (β′1 + γ′1 martensites) + Nb (Fe,Al,Cu)2 phase; Cu-10wt.% Al-4wt.% Fe

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10

Chen, Dezhi, Fangdong Xu, Jingyue Yu, Shu Wang, Qi Wang, and Ruirun Chen. "Study on the silicide phase control and room temperature mechanical properties of Nb-Si-Ti based alloys via B and Mg-microalloying." MATEC Web of Conferences 401 (2024): 03011. http://dx.doi.org/10.1051/matecconf/202440103011.

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The Nb-16Si-20Ti-4Cr-1.5Al-4Hf-4Zr-1Ta-xB (x=0, 2, 4)-yMg (y=0, 0.2, 0.4) alloys were prepared by non-consumable arc melting. The effects of B and Mg addition on the microstructure and room temperature fracture toughness have been investigated. The results reveal that when the content of B element reached 4 at.%, the intermediate metastable phase Nb3Si was precipitated in Nb-Si based alloys. The cooperation of B and Mg synergistically enhances the room temperature fracture toughness of Nb-Si based alloy. B and Mg element causes the eutectic point of Nb-Si based alloy to shift to the right. The

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11

Sharkeev, Yurii, Zhanna G. Kovalevskaya, Qi Fang Zhu, Margarita A. Khimich, and Evgeniy A. Parilov. "Investigation of the Influence of Ti-Nb Alloy Composition on the Structure of the Ingots Produced by Arc Melting." Advanced Materials Research 1085 (February 2015): 307–11. http://dx.doi.org/10.4028/www.scientific.net/amr.1085.307.

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The results of investigation of the structure, physical and mechanical properties of the Ti-Nb alloy ingots with different composition obtained by arc melting are presented. X-ray diffraction and microstructural analyses were used. Microhardness was measured and the Young’s modulus of the alloys was evaluated. When the content of niobium in the alloy changes from 10 to 40 mass.%, phase composition of the alloy varies from α-and α'-phase (10 mass.% of Nb) to α'-, α''- and β-phases (25 mass.% of Nb), to the β-phase (40 mass.% of Nb). The alloy containing 40 mass.% Nb has the lowest Young’s modul

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12

Wang, Yan Qing, Zhao Gang Liu, Ben Shuang Sun, and Dong Xin Wang. "Study on Microstructure of Several Nb-Ti-Cr-Al as-Cast Alloys." Advanced Materials Research 581-582 (October 2012): 504–9. http://dx.doi.org/10.4028/www.scientific.net/amr.581-582.504.

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Due to low-density, higher elevated temperature strength and good oxidation resistance; the Nb-Ti-Cr-Al alloy was estimated to become a new kind of material used at elevated temperature of next generation. Therefore, it was widely studied by western developed country, but there are still many questions unsolved in this area. In this article, several kinds of Nb-Ti-Cr-Al alloys of different compositions were prepared by arc melting, and analyzed by metallographic method, XRD, SEM and EDS. The results indicated, in Nb-40Ti-15Al alloy, the solidified Structure was typical small equiaxed grains, c

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13

Han, Ping, and Jian Ting Guo. "Effect of Process on Microstructure and Elevated Temperature Mechanical Behavior of Multi-Phase NiAl-Fe(Nb) Alloy." Advanced Materials Research 299-300 (July 2011): 163–66. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.163.

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The microstructure and elevated temperature mechanical behavior of as-cast, HIPed and directionally solidified NiAl-Fe(Nb) Alloys have been investigated. The results show that the microstructure of as-cast NiAl-Fe(Nb) alloy consists of dendritic regions (b) and interdendritic regions (g/g¢) with non-continuous NbNiAl(Laves) phase segregating at the interfaces of b and g/g¢ phases. The HIP processing does not alter the microstructure of as-cast alloy. The longitudinal dendritic microstructure of the DS NiAl-Fe(Nb) alloy is regular. Room temperature elongations of as-cast and HIPed NiAl-Fe(Nb) a

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14

Kashkarov, Egor B., Leonid A. Svyatkin, Kirill S. Gusev, et al. "Influence of Nb Content on Structure and Functional Properties of Novel Multicomponent Nb–Ni–Ti–Zr–Co Alloy for Hydrogen Separation Membrane Application." Hydrogen 5, no. 4 (2024): 929–39. http://dx.doi.org/10.3390/hydrogen5040049.

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Novel multicomponent Nb–Ni–Ti–Zr–Co alloys with 20–55 at.% Nb were synthesized from metal powders by arc melting. The resulting alloys consist primarily of Nb-rich and eutectic body-centered (BCC) phases. The content of the eutectic BCC phase is highest for an equimolar composition, while the content of the Nb-rich BCC phase increases with Nb content in the alloy. The content of secondary phases is the highest for the alloy with 32 at.% Nb. According to ab initio calculations, hydrogen occupies tetrahedral interstitial sites in the Nb-rich phase and octahedral sites in the eutectic BCC phase.

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15

Pang, C., H. Li, W. L. Zhao, and C. H. Zhang. "Influence of Nb content on the mechanical behavior of zirconium alloys." Journal of Physics: Conference Series 2353, no. 1 (2022): 012003. http://dx.doi.org/10.1088/1742-6596/2353/1/012003.

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Abstract Zirconium alloys are basically used in the core structural components of a nuclear reactor. For further understanding mechanical behaviors of zirconium alloy, several alloys with various Nb content are investigated. Microstructure observation, Vickers hardness and mechanical stress-strain curves have been investigated and numerically extracted. Conclusions confirm that the precipitation content of the second phases in Zr-Sn-Nb-Fe-Cr alloys increases with the gradual increment of Nb content. When Nb content reaches to 1.2 wt.%, the excess Nb participates in the formation of second phas

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16

Jiang, Yong Jun. "A Significant Improvement in Mechanical Properties of near Eutectic Nb-Si Alloys." Advanced Materials Research 668 (March 2013): 789–93. http://dx.doi.org/10.4028/www.scientific.net/amr.668.789.

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In this paper, a significant improvement in mechanical and oxidation properties of near eutectic Nb–Si alloys by the addition of aluminum (Al) and control of microstructural length scale were studied. A comparative study of two alloys Nb-18.79at%Si and Nb-12.3at%Si-9at%Al were carried out. Compression test yields the ultimate strength of 1.8±0.1 GPa and engineering strain of 2.3±0.03%. In comparison, the binary Nb-18.79 at% Si alloy possesses an ultimate strength of 1.35±0.1 GPa and strain of 0.2±0.01% when processed under identical conditions. The indentation fracture toughness of Al containi

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17

Wang, Xuanli, Shungui Zuo, Gaishi Wang, Jun Cao, Yuqi Zhang, and Mingjiang Jin. "Influence of Nb content on mechanical behavior and microstructure of Ti–Nb alloys." International Journal of Materials Research 113, no. 3 (2022): 205–13. http://dx.doi.org/10.1515/ijmr-2020-8050.

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Abstract The effect of Nb content on the mechanical behavior of Ti-(20, 25, 30) at.% Nb alloys has been investigated. Results show that the storage modulus, the tensile strength and elongation at room temperature decrease with increasing Nb content. The Ti-20Nb and Ti-25Nb alloys show double-yielding behavior and they exhibit higher work hardening rate than the Ti-30Nb alloy. The Ti-20Nb alloy deforms by stress-induced β → α″ transformation and the reorientation of the α″ phase. While the Ti-25Nb alloy deforms by stress-induced martensitic transformation and deformation bands that are devoid o

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18

Choe, Han Cheol, and William A. Brantley. "Effects of Multi-Layered TiN/ZrN/Tooth-Ash Composite Coatings on the Surface Characteristics of Ti-(Nb, Zr, Ta, Hf) Dental Implant Alloys with Low Elastic Modulus." Advanced Materials Research 26-28 (October 2007): 825–28. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.825.

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Effects of TiN, ZrN and tooth-ash coatings on the surface phenomena of Ti-(Nb, Zr, Ta, Hf) dental implant alloys with low elastic modulus has been researched by using electrochemical methods. Ti-(Nb, Ta, Zr, and Hf) alloys were fabricated and surface-coated with TiN, ZrN and tooth-ash (hydroxyapatite) using the RF-sputtering. The electrochemical behaviors of the TiN, ZrN and HA-coated dental implant fixtures were investigated using techniques such as potentiodynamic polarization analysis in 0.9% NaCl solution, as well as examine the detailed structure of these coated alloys using SEM and XRD.

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19

Liu, Hongwei, Hui Zhao, Chunyan Du, et al. "Effect of different Nb content on microstructure and properties of AlCrFeNiNbx high entropy alloy." Journal of Physics: Conference Series 2954, no. 1 (2025): 012028. https://doi.org/10.1088/1742-6596/2954/1/012028.

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Abstract This study describes the design and melting of a novel high entropy AlCrFeNiNbx alloy. The impact of various Nb elements on the high entropy alloy’s mechanical characteristics and microstructure was investigated. When the content of the Nb element is 0, the high entropy alloy has a regular shape of the equiaxial crystal and an irregular lamellar structure between the crystals, and the alloy mainly consists of the BCC phase. After the addition of the Nb element, the grain changes from equiaxial to relatively coarse dendrite grains, and the lamellar structure is distributed at the end o

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20

HUA, Z., Y. M. SUN, W. Q. YU, and M. B. WEI. "CRYSTALLIZATION PROGRESS AND MAGNETIC PROPERTY OF Fe–Zr(Nb)–B AMORPHOUS-NANOCRYSTALLINE ALLOY." International Journal of Modern Physics B 26, no. 11 (2012): 1250088. http://dx.doi.org/10.1142/s0217979212500889.

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Fe 81 Zr 9 B 10 and Fe 81 Zr 7 Nb 2 B 10 amorphous alloys were prepared by melt-spinning. The microstructures and magnetic properties of the alloys annealed at various temperatures were investigated by X-ray diffraction (XRD) and vibrating sample magnetometer (VSM). The crystallization progresses of Fe 81 Zr 9 B 10 and Fe 81 Zr 7 Nb 2 B 10 amorphous alloys are as follows: amorphous → residual amorphous + α- Fe → α- Fe + Fe 3 Zr + ZrFe 2 and amorphous → residual amorphous + α- Fe → α- Fe + Fe 2 Zr , respectively. The grain size (D) of α- Fe in Fe 81 Zr 7 Nb 2 B 10 alloy is smaller than that in

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21

Wong, Timothy, Z. Yu, K. Suzuki, M. A. Gibson, K. Ishikawa, and K. Aoki. "Effect of Annealing on the Hydrogen Permeation and Mechanical Behaviour of Nb-Ni-Zr Alloy Membranes." Materials Science Forum 654-656 (June 2010): 2839–42. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.2839.

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Nb/NiZr composite alloy membranes have been reported to have hydrogen permeabilities higher than that of pure Pd. Since the hydrogen permeation behaviour in these composite alloys is highly microstructure sensitive, hydrogen permeability is likely to depend on annealing conditions. This work has looked into the effect of annealing on the hydrogen permeability of as-cast Nb-Ni-Zr alloys with the goal of helping in the advancement of Nb-based alloy membranes as cost-effective alternatives to the Pd-based alloy membranes used for hydrogen purification. Nb-Ni-Zr alloy ingots of different compositi

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22

Vervynckt, Stephanie, Philippe Thibaux, Martin Liebeherr, and Yvan Houbaert. "Model Alloys to Study the Solute Drag and Precipitation Effect on the Recrystallization Kinetics of Nb-Microalloyed Steels." Materials Science Forum 558-559 (October 2007): 369–75. http://dx.doi.org/10.4028/www.scientific.net/msf.558-559.369.

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A good combination of strength and toughness in HSLA steels can be achieved by the addition of microalloying elements such as Nb. Nb can retard the static recrystallization of austenite at low temperatures by either a solute drag or by a precipitation pinning (when bonded to C or N) effect. Both mechanisms result in improved mechanical properties due to grain size refinement of the transformed ferrite. In this study, 3 Nb-microalloyed model alloys were designed to investigate the solute drag and the precipitation effect separately. The first alloy, containing a stoechiometric ratio of Nb and C

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23

Takahashi, Masatoshi, Kotaro Sato, Genichi Togawa, and Yukyo Takada. "Mechanical Properties of Ti-Nb-Cu Alloys for Dental Machining Applications." Journal of Functional Biomaterials 13, no. 4 (2022): 263. http://dx.doi.org/10.3390/jfb13040263.

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Titanium has excellent biocompatibility and good corrosion resistance and is extensively used in dental implants and denture bases. However, pure titanium lacks the strength for use in dental prostheses that require relatively high strength. We developed 15 different types of Ti-Nb-Cu alloys and investigated their alloy phases and mechanical properties, including tensile and yield strength, elongation after fracture, and Vickers hardness. The alloy phases of Ti-8%Nb-2%Cu and Ti-13%Nb-2%Cu were α + β, while those of Ti-5%Nb-5%Cu and Ti-10%Nb-5%Cu were α + Ti2Cu. The tensile strength and hardnes

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24

Watanabe, N., G. Zhang, Hiroshi Yukawa, et al. "Hydrogen Solubility and Resistance to Hydrogen Embrittlement of Nb-Pd Based Alloys for Hydrogen Permeable Membrane." Advanced Materials Research 26-28 (October 2007): 873–76. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.873.

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The alloying effects of Pd on the hydrogen solubility and the resistance to hydrogen embrittlement are investigated for Nb-xmol%Pd-ymol%Zr (x=0~19; y=0, 1) alloys. The hydrogen solubility at 673 K is found to decrease with increasing Pd content in the alloys. Both pure Nb and Nb-Pd alloys possessed ductility in vacuum at 673 K. However, severe hydrogen embrittlement occurs in pure Nb when it is tested under the hydrogen pressure even as low as 0.01 MPa. In view of the small punch (SP) absorption energy, the addition of Pd into Nb improves the resistance to hydrogen embrittlement by decreasing

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Zhou, Dingmao, Xianjue Ye, Jianwei Teng, Chao Li, and Yunping Li. "Effect of Nb on Microstructure and Mechanical Property of Novel Powder Metallurgy Superalloys during Long-Term Thermal Exposure." Materials 14, no. 3 (2021): 656. http://dx.doi.org/10.3390/ma14030656.

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Microstructure and mechanical properties of novel Ni-20Co-12Cr superalloys, with and without Nb addition, were systematically studied during long-term thermal exposure. With increased exposure time, the average diameter of the γ′ precipitates increased in both alloys in succession; this is more obviously observed in alloy containing 1 wt% Nb (1Nb). It is suggested that Nb increased the γ′ coarsening rate by accelerating the diffusion of Al and Nb in γ matrix. In addition, the γ′ phase fraction is increased by about 4% in 1Nb compared to the alloy without Nb (0Nb). The morphology of the γ′ phas

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26

Sakaguchi, Nobuhito, Niinomi Mitsuo, Toshikazu Akahori, Takashi Saito, and Tadahiko Furuta. "Effects of Alloying Elements on Elastic Modulus of Ti-Nb-Ta-Zr System Alloy for Biomedical Applications." Materials Science Forum 449-452 (March 2004): 1269–72. http://dx.doi.org/10.4028/www.scientific.net/msf.449-452.1269.

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Effects of alloying elements on elastic moduli (Youngs moduli) of Ti-Nb-Ta-Zr system alloys for biomedical applications were investigated. In this case, Ti-30Nb-10Ta-5Zr which is the simplified chemical compositional alloy of Ti-29Nb-13Ta-4.6Zr for biomedical applications has been selected as the basic alloy composition. Each alloying element content of Ti-Nb-Ta-Zr quaternary alloys was varied independently. Nb content was varied from 0 through 40 mass % by eight levels. Ta content was varied from 0 through 20 mass % by five levels. Zr content was varied from 0 through 10 mass % by five level

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27

Huai, Kaiwen, Jianting Guo, Qiang Gao, and Rui Yang. "Effect of various niobium additions on microstructure and mechanical behavior of a NiAl–Cr–Mo eutectic alloy." International Journal of Materials Research 97, no. 1 (2006): 59–63. http://dx.doi.org/10.1515/ijmr-2006-0009.

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Abstract The microstructure and compressive behavior of the NiAl – 28Cr – 6Mo alloy doped with various amounts of Nb have been investigated. The results show that the microstructure of all Nb-doped alloys mainly consists of three phases, viz. the gray lamellar Cr(Mo) plate, the black NiAl matrix, and Cr2Nb with C14-structure-type 1 Laves phase semicontinuously distributed at the cell boundary. All Nb-doped alloys exhibit relatively good room-temperature compressive ductility and higher yield strength at all temperatures compared to the NiAl – 28Cr – 6Mo eutectic alloy due to the presence of La

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28

Azmat, Ambreen, Muhammad Tufail, and Alidad Chandio. "Effect of Niobium on Ti–Sn Alloy for Implant Applications." Journal of Nanoelectronics and Optoelectronics 16, no. 12 (2021): 1956–63. http://dx.doi.org/10.1166/jno.2021.3157.

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Titanium (Ti) based alloys (e.g., Ti6Al4V) are extensively utilized in the field orthopedic and dental implant applications due to their enhanced bio-mechanical properties. Nevertheless, their resistance to corrosion requirements needs to be enhanced. Furthermore, existence of vanadium (V) and almunium (Al) elements causes cancer and alzymer respectively. Therefore, in this research Ti-Sn-Nb alloy was produced through the powder metallurgy (PM) route. Tin (Sn) and niobium (Nb) is chosen as an alloying element which replaces toxic Al and V elements. The effect Nb on the Ti–Sn–Nb alloy was studi

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Sokolovskyi, Mykola, Artemii Bernatskyi, Oleksandr Siora, et al. "Analyzing Thermal Processes in Laser Welding of Multi- Component Heat-Resistant Alloy Thin-Walled Butt Joints: A Comprehensive Modeling Approach." Spektrum Industri 21, no. 2 (2023): 149–58. http://dx.doi.org/10.12928/si.v21i2.151.

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Niobium-based alloys are vital in high-temperature environments due to their unique chemical composition, phase structure, high density, and oxidation resistance. These alloys find extensive applications in industries such as medicine, engine manufacturing, and space technology. This study delves into the complexities of modeling laser welding processes, necessitated by the multitude of dynamic parameters specific to each surface configuration. Finite element modeling was conducted using COMSOL Multiphysics to analyze the heat transfer in butt joints between Nb-15W-5Mo-1Zr alloy plates under 4

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Zeng, Hong Jie, Lai Qi Zhang, Jun Pin Lin, Shao Jie Zhang, and Guo Liang Chen. "Alloy and Powder Preparation of High Niobium Containing TiAl Based Alloys." Applied Mechanics and Materials 109 (October 2011): 150–55. http://dx.doi.org/10.4028/www.scientific.net/amm.109.150.

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High Nb containing TiAl based alloys exhibit excellent corrosion resistance to molten zinc. They are expected to serve as the potential coating materials of corrosion resistance to molten zinc. Four TiAl-Nb alloys of good oxidation resistance and their powders were prepared by arc-melting and ball milling, respectively. The Microstructure, Hardness, Coefficient of thermal expansion, and grain size distribution of four as-cast TiAl-Nb alloys and their powders were investigated. In addition, EPMA analysis was employed to further examine the existential state of element Y in as-cast TiAl-Nb alloy

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Takahashi, Masatoshi, Masafumi Kikuchi, and Yukyo Takada. "Grindability of Ti−Nb−Cu Alloys for Dental Machining Applications." Metals 12, no. 5 (2022): 861. http://dx.doi.org/10.3390/met12050861.

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We developed high-strength Ti−Nb−Cu alloys and investigated their grindability. The grindability of each alloy was evaluated based on the volume of metal removed per minute (grinding rate) and on the ratio of the metal volume removed to the volume of the wheel material lost (grinding ratio). The grinding rate of the Ti-6%Nb-4%Cu, Ti-18%Nb-2%Cu, and Ti-24%Nb-1%Cu alloys significantly exceeded that of unalloyed titanium at high, medium, and low grinding speeds, respectively. Additionally, the Ti-6%Nb-4%Cu alloy exhibited an excellent grinding ratio. Generally, materials with high strength and ha

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32

TAHARA, MASAKI, HEE YOUNG KIM, HIDEKI HOSODA, and SHUICHI MIYAZAKI. "SHAPE MEMORY EFFECT AND CYCLIC DEFORMATION BEHAVIOR OF Ti–Nb–N ALLOYS." Functional Materials Letters 02, no. 02 (2009): 79–82. http://dx.doi.org/10.1142/s1793604709000600.

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The effect of 1 at.% N addition on the shape memory effect of Ti – Nb alloys was investigated. The shape memory effect and superelasticity were observed in Ti –(18–20) Nb –1.0 N and Ti –(21–25) Nb –1.0 N alloys, respectively. The Ti –23 Nb –1.0 N alloy exhibits the best superelastic properties with almost perfect recovery and small stress hysteresis among N added ternary alloys. The effect of cyclic deformation on the stability of superelasticity was investigated for the Ti –23 Nb –1.0 N alloy by loading and unloading cyclic tensile tests up to 500 cycles with a constant maximum applied strain

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Liu, Lei, Bang Zhou, Yiqun Zhang, et al. "FeSiBPNbCu Bulk Nanocrystalline Alloys with High GFA and Excellent Soft-Magnetic Properties." Metals 9, no. 2 (2019): 219. http://dx.doi.org/10.3390/met9020219.

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(Fe0.76Si0.09B0.1P0.05)99.3−xNbxCu0.7 (x = 0–1.5 at. %) bulk nanocrystalline alloys were prepared to investigate the alloying effects of Nb on glass forming ability, thermal stability, soft magnetic properties, and crystallization behavior. It was found that the amorphous forming ability was greatly improved with the addition of minor Nb. The thermal stability of Nb-containing alloy was significantly improved because the initial crystallization temperature and crystallization activation of the primary phase were obviously better than that of the Nb-free alloy. Further, the larger intervals of

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34

Soboleva, T. Y., N. V. Konovalova, I. M. Abdyukhanov, A. S. Tsapleva, M. V. Kravtsova, and M. V. Alekseev. "Effect of heat treatment on the structure and mechanical properties of the semi-finished products from NbTa(Zr,Hf,Y) alloy for the manufacture of Nb3Sn superconductors." Superconductivity: Fundamental and Applied Research, no. 2 (July 2024): 42–56. http://dx.doi.org/10.62539/2949-5644-2024-0-2-42-56.

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The influence of the degree of deformation and annealing on the mechanical properties of Nb-based alloy samples of different compositions: Nb-Ta-Zr, Nb-Ta-Hf, Nb-Ta-Zr-Y used in the manufacture of Nb3Sn superconductors is studied. The deformability of Nb-based alloys in the composition of single-fiber composite Nb3Sn superconductors, which were manufactured using the technology of an internal tin source and the «powder – in – tube» method, has been studied. It is shown that the values of the time resistance of samples with a sheath made of Nb alloys 7.5 wt.% Ta–0.5 wt.% Zr and Nb–7.5 wt.% Ta–1

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Wang, Bao Lai, Yan Bo Wang, and Yu Feng Zheng. "Phase Constitution, Mechanical Property and Corrosion Resistance of the Ti-Nb Alloys." Key Engineering Materials 324-325 (November 2006): 655–58. http://dx.doi.org/10.4028/www.scientific.net/kem.324-325.655.

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Recently, people devote to the development of Ni-free shape memory alloys in order to avoid the Ni-hypersensitivity and toxicity and pursue absolute safety. The shape memory effect and superelasticity have been reported in the biomedical Ti-Nb based alloys. The purpose of this paper is to report the phase constitution, tensile property, shape memory effect and corrosion resistance of the Ti-Nb alloys. The phase constitutions of the Ti-Nb alloys are investigated by means of X-ray diffraction (XRD). The results reveal that β+α′′ phases are presented in the Ti-35Nb alloy and only β phase in the T

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Li, Shuanglei, Mi-Seon Choi, and Tae-Hyun Nam. "Effect of Nb Content on Superelastic Properties of Biomedical Ti–Zr-Based Shape Memory Alloys." Science of Advanced Materials 12, no. 9 (2020): 1394–98. http://dx.doi.org/10.1166/sam.2020.3803.

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Ti–18Zr–xNb–2Sn (x = 10, 11, 11.5, 12, 12.5) (at.%) shape memory alloys were fabricated by arc melting then phase constitutions and superelastic properties were investigated by X-ray diffraction (XRD) and tensile test at various temperatures between 178 K and 413 K. Excellent superelasticity was observed in 12.5Nb alloy at temperatures between 258 K and 298 K. Both superelasticity and shape memory effect were observed in 12Nb alloy at temperatures between 233 K and 383 K. Only shape memory effect was observed in 11Nb and 11.5Nb alloys at temperatures between 298 K and 383 K. 12.5Nb and 12Nb al

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Huang, Kai, Feng Xu, Xinyan Liu, et al. "Microstructure, Mechanical, and Tribological Properties of Nb-Doped TiAl Alloys Fabricated via Laser Metal Deposition." Materials 17, no. 17 (2024): 4260. http://dx.doi.org/10.3390/ma17174260.

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TiAl alloys possess excellent properties, such as low density, high specific strength, high elastic modulus, and high-temperature creep resistance, which allows their use to replace Ni-based superalloys in some high-temperature applications. In this work, the traditional TiAl alloy Ti-48Al-2Nb-2Cr (Ti4822) was alloyed with additional Nb and fabricated using laser metal deposition (LMD), and the impacts of this additional Nb on the microstructure and mechanical and tribological properties of the as-fabricated alloys were investigated. The resulting alloys mainly consisted of the γ phase, trace

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38

Eroshenko, A. Yu, Yu P. Sharkeev, M. A. Khimich, et al. "Affect of prolonged thermal exposure on microstructure and mechanical properties of ultrafine-grained bioinert Zr - 1 wt. % Nb and Ti - 45 wt. % Nb alloys." Izvestiya vysshikh uchebnykh zavedenii. Fizika, no. 11 (2020): 9–16. http://dx.doi.org/10.17223/00213411/63/11/9.

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The results for thermal stability of the microstructure and mechanical properties of ultrafine-grained alloys Zr-1 wt. % Nb and Ti-45 wt. % Nb alloys after long-term thermal annealing at temperature of 400°C are presented. It is shown that in the Zr-1 wt.%Nb alloy in the ultrafine-grained state, increase in the annealing duration from 5 to 360 hours leads to growth of the structural elements (grains, sub-grains, fragments) of the matrix phase a - Zr and the particles β-Nb. This fact is due to the processes of recrystallization. It leads to softening of the alloy and decrease of microhardness a

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Liu, Yan Dong, and Yi Qiao Yang. "The Effect of Nb-Ti on Cold Rolling Texture and Recrystallization Texture of B4003M." Advanced Materials Research 181-182 (January 2011): 1054–58. http://dx.doi.org/10.4028/www.scientific.net/amr.181-182.1054.

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In this study, the effect of different compositions of the stabilized elements of Nb-Ti for cold rollling textures and the recrytalization textures of B4003M has been investigated. Cold rolling texture at 80% reduction displayed by the Nb-Ti added specimen is the weakest of all. When annealing at 900°C for 10 min, the recrystalli -zation textures displayed by the Nb-added, Ti-added, Nb-Ti-added and Nb-Ti-free alloys are compared. Results show that: {111} recrystallization texture in Nb-added alloy is the strongest, whereas it in the Nb-Ti-free alloy is the lowest. The mutual effect of Nd and T

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Pan, X. F., H. F. Zhang, A. M. Wang, B. Z. Ding, and Z. Q. Hu. "Preparation of superfine Fe-base alloy by liquidus casting." Journal of Materials Research 16, no. 12 (2001): 3459–63. http://dx.doi.org/10.1557/jmr.2001.0475.

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The superfine Fe–B–Si–Mo and Fe–B–Zr–Nb alloys were prepared by liquidus casting in which the levitation melting combining with the rapid solidification was used. The melt was poured into a copper mold at various temperatures, and a superfine granular microstructure was obtained at liquidus temperature. The behavior of Cu and Ag addition to Fe–B–Si–Mo and Fe–B–Zr–Nb alloys was studied. Both adding Cu and Ag to Fe–B–Si–Mo and Fe–B–Zr–Nb alloys had influence on refining the alloys. The refinement effect of adding Cu is stronger than that of adding Ag in Fe–B–Zr–Nb alloy.

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Wu, Mei Ling, Feng Wei Guo, Ming Li, Yong Wang Kang, and Ya Fang Han. "Effect of Trace Ce and B Additions on the Mechanical Properties of Nb-3Si-22Ti Alloys." Materials Science Forum 898 (June 2017): 454–60. http://dx.doi.org/10.4028/www.scientific.net/msf.898.454.

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The Nb-Si system ultrahigh temperature alloys were prepared by vacuum non-consumable arc melting. The influence of micro-alloying elements of B and Ce on the hardness, room-temperature fracture toughness and compressive strength at 1250°C of the Nb-22Ti-3Si alloys was investigated and estimated systematically. The results showed that the hardness of the Nb-22Ti-3Si alloy increased obviously with trace B addition, but decreased slightly with trace Ce addition. The room-temperature fracture toughness of the Nb-22Ti-3Si alloy was degraded by the Ce addition but improved by the trace addition of B

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42

Kim, Kyong Min, Hee Young Kim, and Shuichi Miyazaki. "Effect of Zr Content on Phase Stability, Deformation Behavior, and Young’s Modulus in Ti–Nb–Zr Alloys." Materials 13, no. 2 (2020): 476. http://dx.doi.org/10.3390/ma13020476.

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Ti alloys have attracted continuing research attention as promising biomaterials due to their superior corrosion resistance and biocompatibility and excellent mechanical properties. Metastable β-type Ti alloys also provide several unique properties such as low Young’s modulus, shape memory effect, and superelasticity. Such unique properties are predominantly attributed to the phase stability and reversible martensitic transformation. In this study, the effects of the Nb and Zr contents on phase constitution, transformation temperature, deformation behavior, and Young’s modulus were investigate

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43

Tsakiropoulos, Panos. "Refractory Metal (Nb) Intermetallic Composites, High Entropy Alloys, Complex Concentrated Alloys and the Alloy Design Methodology NICE—Mise-en-scène † Patterns of Thought and Progress." Materials 14, no. 4 (2021): 989. http://dx.doi.org/10.3390/ma14040989.

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The paper reflects on the usefulness of the alloy design methodology NICE (Niobium Intermetallic Composite Elaboration) for the development of new Nb-containing metallic ultra-high-temperature materials (UHTMs), namely refractory metal (Nb) intermetallic composites (RM(Nb)ICs), refractory high entropy alloys (RHEAs) and refractory complex concentrated alloys (RCCAs), in which the same phases can be present, specifically bcc solid solution(s), M5Si3 silicide(s) and Laves phases. The reasons why a new alloy design methodology was sought and the foundations on which NICE was built are discussed.

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44

Avila-Salgado, Denis Ariel, Arturo Juárez-Hernández, Nelson Javier Izaguirre-Bonilla, Jonathan Muñoz Tabora, and José Luis Camacho-Martínez. "Evolution of Microstructure, Hardness, and Wear Behavior of Medium-Entropy CuNiSiCrCoTiNbx Alloy." Lubricants 13, no. 4 (2025): 164. https://doi.org/10.3390/lubricants13040164.

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Medium-entropy alloys (MEAs) allow the formation of different phases, generally in a solid-solution state, and compounds that favor obtaining alloys with properties superior to those of conventional alloys. In this study, medium-entropy CuNiSiCrCoTiNbx alloys were fabricated via melting in a vacuum induction furnace. The influence of the Nb addition (X = 0, 0.5 and 1 wt%) alloying elements on the microstructure, hardness, and wear resistance of the CuNiSiCrCoTiNb0 (M1), CuNiSiCrCoTiNb0.5 (M2), and CuNiCoCrSiTiNb1 (M3) alloys were explored using X-ray diffraction (XRD), scanning electron micros

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Todai, Mitsuharu, Keisuke Fukunaga та Takayoshi Nakano. "Athermal ω Phase and Lattice Modulation in Binary Zr-Nb Alloys". Materials 15, № 6 (2022): 2318. http://dx.doi.org/10.3390/ma15062318.

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To further explore the potential of Zr-based alloys as a biomaterial that will not interfere with magnetic resonance imaging (MRI), the microstructural characteristics of Zr-xat.% Nb alloys (10 ≤ x ≤ 18), particularly the athermal ω phase and lattice modulation, were investigated by conducting electrical resistivity and magnetic susceptibility measurements and transmission electron microscopy observations. The 10 Nb alloy and 12 Nb alloys had a positive temperature coefficient of electrical resistivity. The athermal ω phase existed in 10 Nb and 12 Nb alloys at room temperature. Alternatively,

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Kim, Won Yong. "Microstructure and Pseudoelasticity of Ti-Nb-Si Based Alloys with Biocompatible Alloying Elements." Materials Science Forum 546-549 (May 2007): 2151–56. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.2151.

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We have newly designed a metastable β Ti-Nb-Si based alloy with biocompatible alloying elements without containing toxic V or Al for orthodontic applications. Microstructures and pseudoelastic behavior of β Ti-Nb-Si alloys were investigated in order to correlate the pseudoelasticity and microstructure together with martensite transformation. Nb and Si alloying to the present alloy make β phase to be stable. It is found that metastable β phase is favorable to display pseudoelastic behavior than stable or unstable β phase. Optical microscope (OM) revealed that stress-induced martensitic transfor

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47

Hong, Jiwon, Seonmin Hwang, Namhyun Kang, and Dongwon Lee. "Comparison of the Magnesiothermic Reduction Behavior of Nb2O5 and Ti2Nb10O29." Metals 13, no. 10 (2023): 1743. http://dx.doi.org/10.3390/met13101743.

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Nb-Ti binary alloys are widely employed as high value-added materials in the manufacture of super heat-resistant alloys, biomaterials, and superconductors. Therefore, there is significant interest to produce Nb-Ti master alloys in a cost-effective manner. In this study, we investigated the magnesiothermic reduction of Nb2O5 and Ti2Nb10O29 over the temperature range of 1073 to 1223 K and comparatively evaluated the reaction outcomes. The reduction product was composed of metal (Nb or Nb-Ti) particles and MgO, which covered the surface of the reduced metal particles. After the reduction reaction

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48

Thandorn, Tophan, and Panos Tsakiropoulos. "The Effect of Boron on the Microstructure and Properties of Refractory Metal Intermetallic Composites (RM(Nb)ICs) Based on Nb-24Ti-xSi (x = 16, 17 or 18 at.%) with Additions of Al, Cr or Mo." Materials 14, no. 20 (2021): 6101. http://dx.doi.org/10.3390/ma14206101.

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This paper is about metallic ultra-high temperature materials, in particular, refractory metal intermetallic composites based on Nb, i.e., RM(Nb)ICs, with the addition of boron, which are compared with refractory metal high entropy alloys (RHEAs) or refractory metal complex concentrated alloys (RCCAs). We studied the effect of B addition on the density, macrosegregation, microstructure, hardness and oxidation of four RM(Nb)IC alloys, namely the alloys TT2, TT3, TT4 and TT8 with nominal compositions (at.%) Nb-24Ti-16Si-5Cr-7B, Nb-24Ti-16Si-5Al-7B, Nb-24Ti-18Si-5Al-5Cr-8B and Nb-24Ti-17Si-3.5Al-

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49

D'yachenko F. A., Semin V. O., Neiman A. A., Shugurov A. R., Meisner L. L., and Ostapenko M. G. "Physical-mechanical properties of synthesized layers of Ti-Ni-Nb-based surface alloys, formed on the surface of TiNi alloy." Technical Physics 92, no. 9 (2022): 1164. http://dx.doi.org/10.21883/tp.2022.09.54680.52-22.

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The physical-mechanical properties (microhardness, Young's modulus, plasticity characteristic, shape recovery ratio) of the synthesized layers of Ti-Ni-Nb-based surface alloys of ~2 μm thickness, formed on the surface of TiNi alloy by the additive thin-film electron beam method were investigated by the instrumented indentation. It was found that the change in physical-mechanical properties in the synthesized surface alloys based on Ti-Ni-Nb is due to their layered structure. In particular, it is due to the thickness of the sublayers, their phase composition, and the structural states of the ph

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50

Song, X. G., J. Cao, Y. Z. Liu, and J. C. Feng. "Brazing high Nb containing TiAl alloy using TiNi–Nb eutectic braze alloy." Intermetallics 22 (March 2012): 136–41. http://dx.doi.org/10.1016/j.intermet.2011.10.020.

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