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20221019 · The resulting Nb 2 MoWC 0.96 eutectic alloy exhibits a high-temperature specific compressive strength of 77.2 MPa/·cm 3 ·g 1 at 1673 K with a retained
contactSouth Korea. Austradiva. Russia. Taiwan,China's ferro-niobium import volume increased 44.76% YoY in Nov 2022 [03-24] Brazil's tantalum, niobium and vanadium ore export
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
contactRefractory metals are a class of metals that are extraordinarily resistant to heat and wear. The primary member of the refractory metals are Nb, Ta, Mo, W, and Re. As one of the most dominate industrial refractory alloy, Nb
contactMobility. Technical Briefing. Making brake systems more competitive with a Niobium alloy strategy. An advantageous alternative to help reduce costs, while maintaining
contact20211021 · traded niobium material, was typically consumed in the production of high-strength low-alloy (HSLA) steel. other uses included the fabrication of nonferrous
contact2019220 · All niobium-based alloys are solid solution strengthened alloys. The most commonly used alloying elements are zirconium, titanium, hafnium, tantalum 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
contactSee more Niobium products. Niobium (atomic symbol: Nb, atomic number: 41) is a Block D, Group 5, Period 5 element with an atomic weight of 92.90638. The number of electrons
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
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
contact2021312 · Niobium is an important material for high temperature applications, in space, in superconductors or in chemical process constructions. Laser-based powder bed fusion of niobium (PBF-LB/M/Nb) offers new opportunities in design, though it is still an expensive technique. The build-up rate is an important factor for economical
contact2 · For the as-cast alloys, hardness goes from 38 to 43 HRC and it increases with the carbon content (the lower value for the Alloy 1). This alloys showed a microstructure with a minor amount of carbides and σ-phase. As carbon content increased and the additions of niobium and titanium were present, hardness increased to values of 43 HRC.
contactRefractory metals are a class of metals that are extraordinarily resistant to heat and wear. The primary member of the refractory metals are Nb, Ta, Mo, W, and Re. As one of the most dominate industrial refractory alloy, Nb
contact2023323 · The 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 ...
contactWe studied the effect of the addition of Hf, Sn, or Ta on the density, macrosegregation, microstructure, hardness and oxidation of three refractory metal intermetallic composites based on Nb (RM(Nb)ICs) that were also complex concentrated alloys (i.e., RM(Nb)ICs/RCCAs), namely, the alloys TT5, TT6, and TT7, which had the nominal
contact202086 · The alloy Nb-l%Zr has been suggested for use in space power applications where resistance to liq-uid alkali metal corrosion at temperatures near II00 K was the primary concern (Lane and Ault 1965 and Buckman 1984). Although current designs of space nu-clear power systems for ground demonstration specify the Nb-l%Zr alloy for re-
contact202339 · The Global Niobium Titanium (NbTi) Alloy Market 2023 report provides a comprehensive assessment of the industry's growth potential, with detailed analyses of product types and application segments.
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
contact2 · 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
contact20161112 · 2.1 Nb Alloys and Their Properties. Niobium is a tough, shiny, silver-gray, soft, ductile metal that somewhat resembles stainless steel in appearance. The metal was discovered in 1801 in an ore shipped from Connecticut, more than 100 years earlier, by the scientist Charles Hatchett, who named it Columbium.
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
contact202339 · The Global Niobium Titanium (NbTi) Alloy Market 2023 report provides a comprehensive assessment of the industry's growth potential, with detailed analyses of product types and application segments.
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
contactWe studied the effect of the addition of Hf, Sn, or Ta on the density, macrosegregation, microstructure, hardness and oxidation of three refractory metal intermetallic composites based on Nb (RM(Nb)ICs) that were also complex concentrated alloys (i.e., RM(Nb)ICs/RCCAs), namely, the alloys TT5, TT6, and TT7, which had the nominal
contactA Nb base alloy is described which has high hot strength, fabricability, and oxidation resistance at high temperatures up to 2000 deg F. ... Mo, W, Re, Al, sed Y on the hardness and workability of niobium was determined. Nb-Ti and Nb-Y alloys exhibited excellent cold workbility. Mechanical property data were obtained at room temperature and ...
contact2023126 · This study presents a failure analysis in two reformer tubes used for hydrogen production in a petrochemical industry. These tubes (Tube A and Tube B) were made by the centrifugal casting of HP-Nb alloy in such a way that one contained titanium as a micro-element, and the other was free from titanium in its chemical composition.
contact2023322 · About Zirconium-Niobium Alloy. Zirconium alloys with niobium are used as claddings of fuel elements of VVER and RBMK reactors. These alloys are the basis material of assembly channel of
contact2023316 · Niobium Alloy. Niobium alloy has some special properties like low density, easy to shape, and excellent mechanical properties at both high and low temperatures. The commonly used niobium alloys are Nb-W, Nb-Mo, Nb-Hf, and Nb-Ti. Because it's a refractory metal, it can handle very high temperatures without getting damaged. This
contact2 · 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
contactJournal of Phase Equilibria and Diffusion. 2022. The Nb-Zr system was reassessed based on calculated theoretical data and available thermodynamic and phase equilibria data. The Gibbs energies of the bcc and hcp solid phases were described using…. Expand. Highly Influenced. View 5 excerpts, cites methods and background.
contact202339 · The Global Niobium Titanium (NbTi) Alloy Market 2023 report provides a comprehensive assessment of the industry's growth potential, with detailed analyses of product types and application segments.
contactWe studied the effect of the addition of Hf, Sn, or Ta on the density, macrosegregation, microstructure, hardness and oxidation of three refractory metal intermetallic composites based on Nb (RM(Nb)ICs) that were also complex concentrated alloys (i.e., RM(Nb)ICs/RCCAs), namely, the alloys TT5, TT6, and TT7, which had the nominal
contact2023126 · This study presents a failure analysis in two reformer tubes used for hydrogen production in a petrochemical industry. These tubes (Tube A and Tube B) were made by the centrifugal casting of HP-Nb alloy in such a way that one contained titanium as a micro-element, and the other was free from titanium in its chemical composition.
contactA Nb base alloy is described which has high hot strength, fabricability, and oxidation resistance at high temperatures up to 2000 deg F. ... Mo, W, Re, Al, sed Y on the hardness and workability of niobium was determined. Nb-Ti and Nb-Y alloys exhibited excellent cold workbility. Mechanical property data were obtained at room temperature and ...
contact2023216 · (niobium-titanium superconelucting alloys) ，。 l：1Nb-Ti，Tc=9．5K，，5T(5Gs)，Jc≥105A／cm2(4．2K)；10T(10Gs)(4 ...
contact：. Superconducting amorphous alloys with high strength and good ductility have been found in rapidly quenched alloys of the Zr-Nb-Si system. These alloys were produced in a continuous ribbon form of 1 to 2 mm width and 0.02 to 0.03 mm thickness using a modified single roller quenching apparatus. The amorphous alloys were formed over the ...
contactX-ray diffraction patterns of alloys containing: 9% Nb—(a) and 4% Nb—(b). Figure 14. Surface distribution of elements such as Fe, Cr, Ni, Mn, Nb, and C in the area of niobium carbides present in the alloy with 9% Nb content shown in Figure 10.
contact202086 · The creep behavior of the niobium alloy C-103 (Nb-1OHf-1Ti-0.7Zr) has been studied as a function of stress, temperature, and grain size for test times to 19 OOO hr. Over the temperature range 827" to 1204" C and the stress range 6.89 to 138 MPa, only tertiary (accelerating) creep was observed. The creep strain
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