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20221019 · Low-density high-temperature alloys are sought for applications in the aerospace and weapons industries. For example, advanced aero-engines and gas
contactNiobium(Nb)-based alloy is one of the candidate materials for ultra-high temperature applications, because of its high melting point, a good ductility at room temperature and a
contactFrom the early development of Nb alloys in the mid-1950s to the present, there have been limited studies of irradiation effects and most have been on examinations of the
contactBinary titanium-niobium (Ti-Nb) alloys have recently been attracted due to low Young's moduli and non-toxic properties. This study explores the influence of low Nb content (0
contact201671 · The Master Alloy of Al-Nb-B. 01 Jul 2016. Introduced over 40 years ago, The Charles Hatchett Award is a prestigious recognition that aims to identify new
contact201235 · 2) Ta and Nb are greater y’ formers than MO and W as evidenced by the changes in the y’ solvus temperature and volume fraction. As a result, it can be seen
contact： The diffusion coefficients for titanium and niobium radioactive tracers were simultaneously measured in Ti, Ti 94.6 Nb 5.4 , Ti 80.4 Nb 19.6 , and Ti 64.3 Nb 35.7
contact2021525 · Niobium-Zirconium alloys (Nb-1Zr) and PWC-11 alloys (Nb-1Zr-0.1C) have been used in the SP-100 design as basic materials for lithium coolant boundaries,
contactAmorphous superconducting alloys with high strength and good ductility have been found in rapidly quenched alloys of the Ti‐Nb‐Si system. Continuous ribbons of these alloys were
contact20211114 · The most typical niobium titanium alloy is titanium content 66% (approx. 50% wt%). Niobium titanium alloy is an important alloyed superconductor material. Its
contact2022113 · The present study is on the improved monotonic response of a severely deformed niobium-based alloy. Nb-1Zr alloy was processed at room temperature using equal channel angular extrusion and cold rolling. After 16 passes, a more than 2.5 times increase in yield strength is accompanied by a ductility level exceeding the as-received
contact2021622 · Niobium (Nb)-based alloys have been extensively used in the aerospace field owing to their excellent high-temperature mechanical properties. However, the inferior oxidation resistance severely limits the application of Nb-based alloys in a high-temperature, oxygen-enriched environment. Related scholars have extensively studied the oxidation
contact· The present phases were characterized also by X-ray diffraction; Fig. 2 shows an example of the diffraction pattern obtained for the Alloy 2 showing the presence of γ-cobalt, ε-cobalt and M 23 C 6.According to some authors, the σ phase is commonly found to diffract at 46° and 48° and these peaks are usually overlapped by the ε-cobalt peak localized at
contact2020820 · both tantalum alloys (T-111 and ASTAR-8 11C) was greater than that of low strength niobium alloys like Nb-1Zr and PWC-11. ASTAR-811C was even co mparable to some tungsten alloys at
contact200211 · The uranium niobium binary alloy system exhibits a rich collection of phenomena for study. The composition range from 0 wt.% Nb to 10 wt.% Nb exhibits multiple crystallographic phases with interesting properties such as superconductivity, charge density waves and shape memory effects. We have measured the resistivity and
contact20211114 · The most typical niobium titanium alloy is titanium content 66% (approx. 50% wt%). Niobium titanium alloy is an important alloyed superconductor material. Its superconductive transition temperature is 8K to 10K. If other elements are added into the alloy, superconductivity will be improved. Niobium titanium alloy is sintered from alloyed
contact201671 · Conference: Alloying effect of niobium and tin on the zirconium alloy fuel cladding behavior at high temperature oxidation in steam - 2016-0072 ... Zr-Sn-Fe (Zircaloy-2,-4) and Zr-Nb-Sn-Fe (E635, Zirlo) are used, which improvement extends, in particular, by varying their composition by Nb, Sn and Fe. At the same time, the importance is given to ...
contact2021525 · Niobium-Zirconium alloys (Nb-1Zr) and PWC-11 alloys (Nb-1Zr-0.1C) have been used in the SP-100 design as basic materials for lithium coolant boundaries, reactor shells and parts inside fuel casings. Nb-1Zr alloy has 50% higher yield strength than pure Niobium and has the same corrosion resistance as pure Niobium in many solutions.
contact2021112 · Niobium Rod & Niobium Bar Standard. All niobium and niobium alloys rod & bar products follow standard ASTM B392, such as pure niobium rod & bar (R04200 , R04210) , Nb1Zr (R04251 R04261) , Nb10Zr , C103, Cb752, C129Y, FS85, Nb50Ti rod & bar and so on.. Niobium Rod Niobium Bar Features. Niobium Rod and Niobium Metal
contact20221019 · Low-density high-temperature alloys are sought for applications in the aerospace and weapons industries. For example, advanced aero-engines and gas turbines require an operating temperature higher than 1273 K. Pure Nb has a high melting point of 2741 K and a low density of 8.57 g/cm 3, making it an ideal element to be used at high
contact2020218 · The 0.2 wt.% Nb alloy exhibited cleavage failure, while the alloys with higher Nb content exhibited mixed mode features comprising transgranular cleavage and ductile dimples (Fig. 11). Fig. 9 Engineering stress–strain curves for tensile samples of hot-rolled Fe–7Al–0.35C steel with different niobium contents
contact2021622 · Niobium (Nb)-based alloys have been extensively used in the aerospace field owing to their excellent high-temperature mechanical properties. However, the inferior oxidation resistance severely limits the application of Nb-based alloys in a high-temperature, oxygen-enriched environment. Related scholars have extensively studied the oxidation
contact2022113 · C103 is a refractory-based niobium alloy for high temperature applications in aerospace. This paper aims to evaluate the compatibility of C103 alloy as a choice of material for laser-based additive manufacturing (AM) technologies. ... Refractory metals and alloys, such as niobium (Nb), tantalum (Ta), tungsten (W), and molybdenum (Mo), are
contactNiobium(Nb)-based alloy is one of the candidate materials for ultra-high temperature applications, because of its high melting point, a good ductility at room temperature and a moderate density. Making a best use of these merits in Nb, a series of Nb-based superalloys have been developed for hot components of gas turbines. During the development, a
contactNiobium (Nb), Titanium (Ti), and Zirconium (Zr) have attracted much attention as implant materials due to it's excellent mechanical properties and biocompatibility. However, little attention has been paid to high Nb-containing biomedical alloys. Here, the 50 wt.%Nb-XTi-Zr ternary alloy(x = 20wt.%, 3
contact202086 · Nb. Ternary alloy additions to Nb consisted of Hf and Mo. Concentrations of binary solutes normally extended over the solubility range or up to 30 or 40 atom percent solute in those systems where total solubility exists. Test temperatures for Nb alloys were 77 and 300 K or 0. 03 and 0. 11 T At m, Nb'
contactRefractory metal alloys based on Nb, Mo, Ta, W, and Re find applications in the aerospace industries because of their high melting points and high temperature strengths. They are generally produced by powder metallurgy technique due to their very high melting points. However, when refining is desired, melting under high vacuum becomes necessary, for
contactThree-Dimensional Printing GRCop-42 GRCop-42 (Cu-4 at.% Cr-2 at.% Nb) is a copper (Cu)-chromium (Cr)-niobium (Nb) alloy that NASA developed for use in rocket propulsion components that required high thermal conductivity, excellent creep resistance, low-cycle fatigue life, and strength at elevated temperatures, such as combustion chamber liners
contact2009121 · With starting metals of 99.99% Al, 99.9% Nb and 99.9% Ti, [] arc-melted under Ar atm 26 ternary alloys with Nb contents ranging between 4 and 19 at.%.As-cast and annealed samples were characterized with optical and scanning electron microscopy, energy dispersive spectroscopy, x-ray powder diffraction and differential thermal analysis
contact2021920 · In this study, Ti-(0-30 wt.%)Nb alloys developed from elemental powders were fabricated by the Selective Laser Melting (SLM) process. Compositional homogeneity, microstructure and mechanical performance were investigated as a function of energy density. The proportion of un-melted Nb particles and isolated pore count reduced with
contact2022106 · Abstract: Niobium (Nb) as a refractory metal has appealing mechanical properties due to high ductility at room temperature.Density functional theory (DFT) calculations confirmed its intrinsic ductility by showing its perfect lattice generates an elastic shear deformation preceding its cleavage fracture under 100> ideal tensile
contactNiobium(Nb)-based alloy is one of the candidate materials for ultra-high temperature applications, because of its high melting point, a good ductility at room temperature and a moderate density. Making a best use of these merits in Nb, a series of Nb-based superalloys have been developed for hot components of gas turbines. During the development, a
contact2020817 · C103 is niobium alloy used in high temperature operating environments. Traditional manufacture methods suffer from feedstock constraints, difficult to machine, high buy-to-fly ratios, and high costs resulting in a limited number of suppliers. Additive manufacture (AM) offers advantages in production of complex parts, improved
contact· The present phases were characterized also by X-ray diffraction; Fig. 2 shows an example of the diffraction pattern obtained for the Alloy 2 showing the presence of γ-cobalt, ε-cobalt and M 23 C 6.According to some authors, the σ phase is commonly found to diffract at 46° and 48° and these peaks are usually overlapped by the ε-cobalt peak localized at
contact2021119 · Nb-Si-based superalloys are considered as the most promising high-temperature structural material to replace the Ni-based superalloys. Unfortunately, the poor oxidation resistance is still a major obstacle to the application of Nb-Si-based alloys. Alloying is a promising method to overcome this problem. In this work, the effects of Hf, Cr, Zr, B,
contact20221115 · At the lower interface between Nb and VT14 titanium alloy, the vortex zones were much less distinguishable. Two types of mixing zones were formed at the interfaces between titanium alloy and niobium during explosive welding: (i) the continuous layer of 2 μm thick ( Figure 3 a), and (ii) localized areas separated from other mixing
contactThe corrosion resistance of niobium, tantalum and Nb–20, 40, 60 and 80 wt% Ta alloys in 5, 10, 15 and 20 wt% HCl and 20, 40, 60 and 80 wt% H3PO4 solutions at boiling point, 150°C and 200°C is ...
contactA1-type granite xenoliths occur in alkali basalts erupted during Pliocene–Pleistocene continental rifting of Carpathian back-arc basin (Central Europe). The Pliocene (5.2 Ma) peraluminous calc-alkalic granite contains unusually high concentrations of critical metals bound in Nb, Ta, REE, U, Th-oxides typical for silica-undersaturated alkalic granites, and
contactAmorphous superconducting alloys with high strength and good ductility have been found in rapidly quenched alloys of the Ti‐Nb‐Si system. Continuous ribbons of these alloys were produced about 2 mm wide and 0.04 mm thick using a modified single roller quenching apparatus. The silicon content in the amorphous alloys was limited to the range ...
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