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The aim of this paper is to provide insight in depth into properties of the three W-Re compounds, including the reduction behavior of the precursor powders, sintering
contactTo develop high-quality refractory metal targets, pure W and W/Re alloys (with Re contents of 1, 5 and 10 mass%) were fabricated via mechanical mixing, press forming and
contactand W–Ti [7, 23–27], which show considerably improved properties as compared to those of pure W [2826–34, ]. The addition of Re to W results in improved ductility, though Re
contact5. W-Re alloys were harder than plain W in the 20–1000°C range. At 800°C, the alloys with 10, 25 and 75% Re had a hardness of about 200 kg/sq. mm while an alloy of W with 2%
contactSECTION 1. IDENTIFICATION. Product Name: Tungsten Rhenium Alloy Product Number: All applicable American Elements product codes, e.g. W-RE-02 , W-RE-03 , W-RE-04 ,
contactPHASE diagram equilibrium studies in the binary tungsten–rhenium system show the presence of two phases over the range 0–65 wt. per cent rhenium at 1,500° C (ref. 1). A
contact2. Tungsten nickel iron (WNiFe) has comparatively higher strength and ductility than tungsten nickel copper (WNiCu). However, W-Ni-Fe alloy belongs to magnetic alloy and
contactTungsten，IUPAC Tungsten。1998Principles of Chemical Nomenclature，Wolfram ，
contactTungsten also referred to as Wolfram, is a chemical element with the chemical symbol W and atomic number 74. After Carbon, Tungsten has the highest melting point of all
contact202031 · Upon high-temperature annealing at 1600 °C, the W-Re-ZrC alloy still retains a high total elongation of 12.9% and a high tensile strength of over 1.3 GPa, unlike the W–Re alloy, which exhibits ...
contactAccording to [2], the phase of Re in W is solution if Re content in W-Re alloy is less than 30%. The material is “tungsten-like”, with the same structure as pure tungsten (bcc). The atomic radiuses of the elements are close, so the lattice parameter do not vary significantly with composition. For W-25%Re alloy several percent of σ-phase
contactand W–Ti [7, 23–27], which show considerably improved properties as compared to those of pure W [2826–34, ]. The addition of Re to W results in improved ductility, though Re shows poor resistance to neutron activation and the W–Re alloy forms brittle phases via transmutation, leading to irradi-ation-induced embrittlement [3].
contact2020220 · That is to say, a W(Re) solid solution is constructed after the high-energy MA, with a milling time up to 50 h, which can be further confirmed by the merely indexed diffraction peaks of the BCC-structured W(Re) and the absence of
contact201771 · Semantic Scholar extracted view of "Microstructural evolution of pure tungsten neutron irradiated with a mixed energy spectrum" by T. Koyanagi et al. ... Microstructural development and irradiation hardening for irradiated W and W–3, 5, 10, 26 wt % Re alloys have been investigated using transmission electron microscopy and
contactW and W-5wt%Re alloy were irradiated by 50 keV helium ions at RT, 200 • C, 350 • C and 500 • C to investigate the influence of temperature on the microdefects and surface morphology in the ...
contact202086 · Both dilute alloys (1- to 7-percent. Re) and an alloy whose composition (25-percent Re) is near the solvus line were studied. SYMBOLS b Burger's vector C constant EC line tension at top of Peierls barrier EO equilibrium line tension H activation energy HO thermal energy needed to bypass obstacle in absence of stress
contact@article{osti_, title = {Irradiation induced precipitation in tungsten based, W-Re alloys}, author = {Williams, R K and Bentley, J and Stiegler, J O and Wiffen, F W}, abstractNote = {Tungsten-base alloys containing 5, 11, and 25 pct Re were irradiated in the EBR-II reactor. Irradiation temperatures ranged from 600 to 1500/sup 0/C. All
contact2 · Tungsten-Rhenium Alloy – Thermal Conductivity. Thermal conductivity of Tungsten-Rhenium Alloy is 70 W/ (m·K). The heat transfer characteristics of a solid material are measured by a property called the thermal conductivity, k (or λ), measured in W/m.K. It is a measure of a substance’s ability to transfer heat through a material by conduction.
contactFind many great new & used options and get the best deals for 1pcs W-CU Tungsten 70% Copper 30% Alloy Plate Sheet 6mm x 100mm x 100mm #ML99 QL at the best online prices at eBay!
contact201931 · Abstract. A body-centered cubic W-based refractory high entropy alloy with outstanding radiation resistance has been developed. The alloy was grown as thin films showing a bimodal grain size distribution in the nanocrystalline and ultrafine regimes and a unique 4-nm lamella-like structure revealed by atom probe tomography (APT).
contact2020220 · That is to say, a W(Re) solid solution is constructed after the high-energy MA, with a milling time up to 50 h, which can be further confirmed by the merely indexed diffraction peaks of the BCC-structured W(Re) and the absence of
contact2017428 · In this work, an interatomic potential for the W-Re system is fitted and benchmarked against experimental and density functional theory (DFT) data, of which part are generated in this work. Having in mind studies related to the plasticity of W-Re alloys under irradiation, emphasis is put on fitting point-defect properties, elastic constants, and
contact202116 · The influence of the transmutation element rhenium (Re) on defect evolution in tungsten (W) during irradiations with heavy ions and deuterium (D) plasma was investigated. Rolled W and W–5Re ...
contact202321 · DOI: 10.1063/1.. Abstract: A tungsten-rhenium (W-Re) classical interatomic potential is developed within the embedded atom method interaction framework. A force-matching method is employed to fit the potential to
contact202323 · the W–Re phase diagram is dealt with in Section 3, and Section 4 considers the possibility of local concentrations c >c in an irradiated material for which the overall Re concentration is less than c. The paper ends with a dis-cussion in Section 5 and conclusions in Section 6. 2. The Helmholtz energy of bcc W–Re alloys
contact20221221 · PHASE diagram equilibrium studies in the binary tungsten–rhenium system show the presence of two phases over the range 0–65 wt. per cent rhenium at 1,500° C (ref. 1). A terminal solid ...
contact202086 · Both dilute alloys (1- to 7-percent. Re) and an alloy whose composition (25-percent Re) is near the solvus line were studied. SYMBOLS b Burger's vector C constant EC line tension at top of Peierls barrier EO equilibrium line tension H activation energy HO thermal energy needed to bypass obstacle in absence of stress
contactIn recent years there has been renewed interest in the development of tungsten alloys for space power and advanced aerospace propulsion systems. Tungsten alloys have great potential for ultrahigh-temperature applications because of their thermal capabilities and exceptional high-temperature mechanical properties. Recent investigations of second
contact26.0% Re: WCu* 10 - 40% Cu: W heavy metal* alloy with a high density: ... The result: tungsten alloys with different property profiles that are customized to the respective application. WK65 (tungsten-potassium)
contact2021518 · The extreme environment in a fusion reactor, namely high thermal load and intense energetic particles, requires the materials to possess high strength and good ductility at high temperature in combination with excellent radiation resistance. Conventional metal tungsten (W) and its alloy cannot satisfy these rigorous requirements, but the
contact2021223 · 4.2. Effect of Re on defects evolution in W. The clearly higher growth of S -parameter in rolled W than W–Re alloy samples by heavy-ion irradiation (figure 3) suggests a higher density of vacancy-type defects in the former than the latter material under the same irradiation process. This is explained as follows.
contact2022617 · Tungsten (W) materials are gaining more and more attention due to the extended applications of metallic systems in the extreme environments. Given W’s unique characteristics like room-temperature brittleness, additive manufacturing (AM) techniques could give them a higher design flexibility and manufacturability. With the growing focus
contact202162 · To develop high-quality refractory metal targets, pure W and W/Re alloys (with Re contents of 1, 5 and 10 mass%) were fabricated via mechanical mixing, press forming and vacuum sintering. Properties such as relative density, grain size and orientation, and magnetron sputtering characteristics were investigated in the W/Re alloys. With
contact2020220 · That is to say, a W(Re) solid solution is constructed after the high-energy MA, with a milling time up to 50 h, which can be further confirmed by the merely indexed diffraction peaks of the BCC-structured W(Re) and the absence of
contactAccording to [2], the phase of Re in W is solution if Re content in W-Re alloy is less than 30%. The material is “tungsten-like”, with the same structure as pure tungsten (bcc). The atomic radiuses of the elements are close, so the lattice parameter do not vary significantly with composition. For W-25%Re alloy several percent of σ-phase
contact2022610 · Abstract: A tungsten-rhenium (W-Re) classical interatomic potential is developed within the embedded atom method interaction framework.A force-matching method is employed to fit the potential to ab initio forces, energies, and stresses. Simulated annealing is combined with the conjugate gradient technique to search for an optimum
contact2017828 · Non-sag tungsten alloys or thoriated tungsten, used for lamp filaments, are examples of this group of materials. Moreover, alloys based on W-Re-Th0 2 and W-Re-HfC are among the strongest alloys used today for construction parts in high-vacuum and high-temperature technology. These tungsten alloys are commonly produced by powder
contact20221221 · PHASE diagram equilibrium studies in the binary tungsten–rhenium system show the presence of two phases over the range 0–65 wt. per cent rhenium at 1,500° C (ref. 1). A terminal solid ...
contact20221212 · Tungsten and tungsten alloys - W-Co alloys with 10-70% W Tungsten and tungsten alloys - W-Co alloys with 10-70% W Tungsten and tungsten alloys - W-Co alloys with eutectic compostion (cca 46% W) ... W-Re alloy (23.4% Re + 0.3% HfC) - Electrolytic thinning W-Re alloy (25% Re) - Electrolytic polishing and chemical etching
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