2014530 · The material investigated in this study is a NbZr alloy with a chemical composition of 2.33 wt% zirconium (Zr), 0.29 wt% tantalum (Ta), 76 ppm H 2, 44 ppm O
contact198261 · “Some Aspects of the Beta⇆ Alpha Transformation in Zirconium−21/2 weight per cent Niobium Alloy with Variable Cooling Rate and Soak
contact20221027 · To understand the nanomechanical behaviors of the Nb-based alloys with Zr addition at room/high temperature, the molecular dynamics simulations of
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
contactThe main characteristics of niobium-bearing zirconium alloys used for fabricating fuel element claddings of pressurized water reactors are considered. It is shown that the high
contactAbout Niobium Zirconium Alloy. Niobium Zirconium is one of numerous high purity alloys manufactured by American Elements. As a master alloy, niobium-zirconium can be used
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,
contact202323 · 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,
contact202323 · Step 5: Melt the niobium zirconium compound ingot niobium-zirconium, Nb-Zr 90/10 wt% onto electrode, smelt the electrode in consumable electrode vacuum furnace for 5-6h, and cool with argon for
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contact201319 · Ultrafine-grained (UFG) niobium zirconium alloy (NbZr) Footnote 1 has recently gained attention as a potential new biomedical implant material due to its favorable combination of high corrosion resistance and adequate mechanical properties such as high strength and ductility and a low Young’s modulus [1, 2].As compared to conventional
contact2020115 · The alloy was produced by vacuum arc melting with subsequent slow cooling in a crucible (cooling rate was 5 × 10 3 °C/s) or with subsequent rapid quenching of the melt on a rotating copper disc (cooling rate was 1 × 10 5 °C/s). The structure of the alloy consisted of two phases, namely, a niobium-based solid solution and cubic carbide (NbZr ...
contactThe present study reports on microstructural evolution upon static annealing treatment and elevated-temperature low-cycle fatigue (LCF) of an ultrafine-grained (UFG) body-centered cubic (bcc) niobium–zirconium (NbZr) alloy, processed by equal channel angular processing (ECAP) at room temperature.
contact19931024 · Niobium alloys are used in a variety of high-temperature applications ranging from light bulbs to rocket engines and nuclear reactors. The unique physical and chemical properties of these alloys have often dictated that only niobium alloys could fulfill certain application requirements. Compared to other refractory metals, niobium alloys
contact20221213 · The material investigated in this study is a NbZr alloy with a chemical composition of 2.33 wt% zirconium (Zr), 0.29 wt% tantalum (Ta), 76 ppm H 2, 44 ppm O 2, 63 ppm C, 5 ppm Fe, and balance niobium (Nb). The NbZr alloy was originally obtained in the form of a 30-mm thick hot-rolled plate with a CG microstructure, and then pro-
contact202241 · The oxidation behavior of 56Nb–16Si- (20-x)Ti–3Cr–3Al-2Hf-xZr (x = 0, 2, 5, 10, at. %) alloys have been evaluated at 800 °C and 1250 °C, respectively. The following conclusions can be drawn from this study:. (1) The Nb–Si-based alloys exhibit different oxidation behavior at the two elevated temperatures.
contactAn emf technique with a ThO2-Y2O3 electrolyte has been used to measure oxygen activity and diffusivity in Nb-V, Nb-Mo, Ta-W, Ta-Re, and Ta-N alloys between 850 and 1130 °C.
contact202323 · Step 5: Melt the niobium zirconium compound ingot niobium-zirconium, Nb-Zr 90/10 wt% onto electrode, smelt the electrode in consumable electrode vacuum furnace for 5-6h, and cool with argon for
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
contactDownload scientific diagram | Representative impact response of CG and UFG NbZr alloys at 50 °C. from publication: Microstructure-based Modeling of the Impact Response of a Biomedical Niobium ...
contact20221019 · For example, Nb-Si alloys (i.e. Nb x Mo y W-10Ti-18Si, x = 10 and 20, y = 0,5,10, and 15 in mol.%) consisting of an Nb-rich solid solution phase and a silicide phase exhibited a yield strength of about 400–800 MPa in compression mode at 1670 K, owing to a high-volume fraction (>40%) of the silicide phase [Citation 4, Citation 13].
contactThe present study reports on microstructural evolution upon static annealing treatment and elevated-temperature low-cycle fatigue (LCF) of an ultrafine-grained (UFG) body-centered cubic (bcc) niobium–zirconium (NbZr) alloy, processed by equal channel angular processing (ECAP) at room temperature.
contactAn emf technique with a ThO2-Y2O3 electrolyte has been used to measure oxygen activity and diffusivity in Nb-V, Nb-Mo, Ta-W, Ta-Re, and Ta-N alloys between 850 and 1130 °C.
contact202241 · The oxidation behavior of 56Nb–16Si- (20-x)Ti–3Cr–3Al-2Hf-xZr (x = 0, 2, 5, 10, at. %) alloys have been evaluated at 800 °C and 1250 °C, respectively. The following conclusions can be drawn from this study:. (1) The Nb–Si-based alloys exhibit different oxidation behavior at the two elevated temperatures.
contactOxidation of niobium alloys with zirconium in dry oxygen at 550-1000C has been investigated. Oxidation kinetics is satisfactorily described by the parabolic-linear mechanism. Maximum oxidation ...
contact2021129 · 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.
contact202323 · Step 5: Melt the niobium zirconium compound ingot niobium-zirconium, Nb-Zr 90/10 wt% onto electrode, smelt the electrode in consumable electrode vacuum furnace for 5-6h, and cool with argon for
contact2023210 · Niobium-Zirconium Alloy Nbzr1 Niobium Zirconium Crucible Niobium Zirconium Alloy Wafer Niobium Zirconium Alloy Nut Nb-1zr Alloy Nbzr2 Alloy, Find Details and Price about Niobium-Zirconium Alloy Nbzr1 from Niobium-Zirconium Alloy Nbzr1 Niobium Zirconium Crucible Niobium Zirconium Alloy Wafer Niobium Zirconium Alloy Nut
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contactCut the alloy ingot into pieces, smelt for another 56h and argon cool for 3.54h. Finally get niobiumzirconium, NbZr 90/10 wt.Microstructural stability of ultrafinegrained niobium ... 15.03.2012 0183 32The chemical compositions of the two NbZr alloys investigated are given in Table 1.Both were obtained as hot rolled plates.
contact20221019 · For example, Nb-Si alloys (i.e. Nb x Mo y W-10Ti-18Si, x = 10 and 20, y = 0,5,10, and 15 in mol.%) consisting of an Nb-rich solid solution phase and a silicide phase exhibited a yield strength of about 400–800 MPa in compression mode at 1670 K, owing to a high-volume fraction (>40%) of the silicide phase [Citation 4, Citation 13].
contactThe present study reports on microstructural evolution upon static annealing treatment and elevated-temperature low-cycle fatigue (LCF) of an ultrafine-grained (UFG) body-centered cubic (bcc) niobium–zirconium (NbZr) alloy, processed by equal channel angular processing (ECAP) at room temperature.
contact2019122 · described. Then the specific role of niobium in the alloys 625, 706 and 718 is examined for its contribution to developing microstructure and the impact of the resulting microstructure on properties. This paper defines the role the niobium plays in making these alloys premier materials of choice in today’s aerospace and land-based gas turbines.
contact202086 · The PNC-11 alloy used in this study was received from the Oak Ridge National Laboratory (ORNL) in the form of l-mm thick machined tensile creep specimens. The material contained 0.90 wt % ZF and 0.063 wt % C, slightly below the PNC-II alloy minimum specification of 0.075 wt % C. Unfortunately, a detailed proc-
contact2021129 · 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.
contactAn alloy with 50% Zr oxidizes at a rate of approximates 10, 18, or 25 mg/cm/sup 2/ hr at 1000, 1100, or 1200 deg C, respectively. The oxidation of alloys with 40 and 50% Zr at 1000 and 1100 deg C follows a nearly parabolic rate, which indicates that the oxide film has a protective ability. At 1200 deg C the oxidation rate is linear.
contact2023210 · Niobium-Zirconium Alloy Nbzr1 Niobium Zirconium Crucible Niobium Zirconium Alloy Wafer Niobium Zirconium Alloy Nut Nb-1zr Alloy Nbzr2 Alloy, Find Details and Price about Niobium-Zirconium Alloy Nbzr1 from Niobium-Zirconium Alloy Nbzr1 Niobium Zirconium Crucible Niobium Zirconium Alloy Wafer Niobium Zirconium Alloy Nut
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contactCut the alloy ingot into pieces, smelt for another 56h and argon cool for 3.54h. Finally get niobiumzirconium, NbZr 90/10 wt.Microstructural stability of ultrafinegrained niobium ... 15.03.2012 0183 32The chemical compositions of the two NbZr alloys investigated are given in Table 1.Both were obtained as hot rolled plates.
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