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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
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
contact2023111 · Alloy Targets. Aluminum Scandium; Cerium Gadolinium; Cerium Samarium; Lanthanum Lithium Titanate; Lithium Lanthanum Zirconate; Zirconium
contact198261 · 72Eff: Van Effenterre, P., “Study of the Equilibrium Diagram and Structural Transformations Obtained by Quenching at Different Rates or Tempering of Zr−Nb Alloys
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
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
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
contact2022312 · In this paper, we successfully synthesize Nb-Al alloys, which are high-temperature structural materials. ... Basel, Switzerland. This article is an open access article distributed under the terms and ... Zheng-Tang Liu, Cheng-Lu Jiang, and Qi-Jun Liu. 2022. "Preparation of Niobium Aluminium Alloy Based on Shock Compression Method"
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
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
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
contact20131224 · Thus, sputtered films of niobium and manganese alloys with 40–75 Nb content have been found amorphous by x-ray diffraction (XRD) investigation, whereas pure Nb and pure Mn films were crystalline . Admixture of different gases, such as helium [ 17 ], hydrogen [ 18 ] and oxygen [ 19 ] in a metal has been found to decrease the degree of
contact2023316 · The present study investigated existing and potential approaches for hot cracking analysis of cast alloys and showed a promising and very applicable new specimen for high alloyed steels. The reliability of this specimen has been demonstrated by adding niobium to alloy HH (ASTM A297), or alloy 1.4837 (ISO 11973). Niobium shows a very
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 ...
contactThe initial oxidation behavior of TiAl-Nb alloys was systematically investigated against the composition, temperature, and partial pressure of O2 with the CALculation of PHAse Diagrams (CALPHAD) technique. The mole fraction of each oxidation product at the initial oxidation stage of the alloys at the corresponding temperatures was predicted. The initial
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
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 ...
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
contact2023316 · The present study investigated existing and potential approaches for hot cracking analysis of cast alloys and showed a promising and very applicable new specimen for high alloyed steels. The reliability of this specimen has been demonstrated by adding niobium to alloy HH (ASTM A297), or alloy 1.4837 (ISO 11973). Niobium shows a very
contactNiobium (Nb) alloys have already been investigated in the 1980's and recent studies demonstrated the potential of Nb as an implant material. The purpose of this study was to determine cytotoxic, hematologic and histologic effects of niobium in Swiss mice.
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
contactWe are committed to delivery of innovative solutions on metal concentrates, oxides, ferro-alloys, chemicals and pure metals to our clients worldwide, with a strong focus on quality and customer service. ... – Niobium Master Alloys (Nickel-Niobium, Aluminium-Niobium, Chrome-Niobium, Ferro-Niobium Vacuum Grade, etc) ... Switzerland. tel.: +372 ...
contact2021830 · QuesTek Innovations will apply computational materials design, additive manufacturing (AM), coating technology, and turbine design/manufacturing to develop a comprehensive solution for a next-generation turbine blade alloy and coating system capable of sustained operation at 1300°C. QuesTek will design a niobium (Nb)-based
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
contactThe initial oxidation behavior of TiAl-Nb alloys was systematically investigated against the composition, temperature, and partial pressure of O2 with the CALculation of PHAse Diagrams (CALPHAD) technique. The mole fraction of each oxidation product at the initial oxidation stage of the alloys at the corresponding temperatures was predicted. The initial
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-
contact2 · 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 RBMK reactor. The
contact2020412 · In terms of strength, dual phase steels are bridging the gap between the conventional high-strength low-alloy (HSLA) steels and the recently much used hot stamping steels. ... predicts a soluble niobium content [Nb] of almost exactly 300 mass ppm at a soaking temperature of 1240 °C considering the actual carbon and nitrogen content in the ...
contact201955 · A maximum of the YTR appears between 600 and 800 °C, which is more pronounced and appears at a somewhat higher temperature in the 0.1%Nb alloy as compared to the Nb-free alloy. In the latter, the YTR shows a sharp drop to a pronounced minimum value of 0.54 in the ICZ. The YTR of the 0.1%Nb alloy, on the contrary, drops
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
contact2023316 · The present study investigated existing and potential approaches for hot cracking analysis of cast alloys and showed a promising and very applicable new specimen for high alloyed steels. The reliability of this specimen has been demonstrated by adding niobium to alloy HH (ASTM A297), or alloy 1.4837 (ISO 11973). Niobium shows a very
contact20221027 · To understand the nanomechanical behaviors of the Nb-based alloys with Zr addition at room/high temperature, the molecular dynamics simulations of nanoindentation are conducted. In this work, the load-unload displacement curve, hardness, and dislocation characteristics of Nb-Zr alloys with varying Zr content ranging from 0 to 5
contactThe initial oxidation behavior of TiAl-Nb alloys was systematically investigated against the composition, temperature, and partial pressure of O2 with the CALculation of PHAse Diagrams (CALPHAD) technique. The mole fraction of each oxidation product at the initial oxidation stage of the alloys at the corresponding temperatures was predicted. The initial
contact201934 · Effect of niobium addition in FeCoNiCuNbx high-entropy alloys - Volume 34 Issue 5. ... 11.6, 15) alloys was studied by varying the Nb concentration (at.%). FeCoNiCuNb 0.5 HEA shows liquid phase
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
contact2019122 · OF NIOBIUM ALLOYS C. Craig Wojcik Wah Chang An Allegheny Technologies Company 1600 Old Salem Road, NE Albany, OR 97321-4548, U.S.A. ... FS-85 Nb-28Ta-10W-1Zr 10.6 Fabrication of Niobium Alloys Niobium alloys are initially hot worked at or slightly above the alloy recrystallization temperature, which is
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 over the temperature range from 950°C to 1511°C using standard lathe-sectioning techniques.
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