Study on high-temperature mechanical properties of W25Re alloy
Tungsten rhenium alloy is widely used in aerospace, weapon electronics, and other high-temperature fields. W25Re alloy bars were prepared by powder metallurgy combined with the rolling deformation process. The mechanical properties of W25Re alloy were studied. The results show that rolled W25Re alloy bars have excellent mechanical …Web
اقرأ أكثرWelcome to Rhenium Alloys, Inc.
Rhenium Alloys, Inc. 38683 Taylor Parkway. North Ridgeville. OH. 44035-6200. FX: 888-366-9830. TF: 888-743-6486. Rhenium Alloys, Inc. is a leading manufacturer of refractory metals and high temperature products, Made in USA in Cleveland, Ohio. Best source for Rhenium, Molybdenum, Tungsten, and alloys Molybdenum-Rhenium, Tungsten-Copper ...Web
اقرأ أكثرEffects of rhenium on the microstructure and creep properties of …
The toughness of 20Zr-2 C alloy is the highest, and its K Q value reaches 14.05 MPa·m 1/2, compared with the matrix alloy (20Zr alloy) increased by 23.46%. The enhancement of Nbss phase fraction and petal shaped microstructure make the crack propagation more difficult, thus increasing the K Q value of the 20Zr-2C alloy.Web
اقرأ أكثرUnderstanding the thermal conductivity of pristine W and W–Re alloys
To overcome these shortages, additional rhenium (Re) are needed and its composition range is usually from 1 to 25 wt%. Rhenium is well known to strongly affect the physical and chemical properties of tungsten. As for the thermal conductivities of W–Re alloys, limited literature [3, 7, 26] are found. It shows that the additional rhenium can ...Web
اقرأ أكثرSpectral directional and total hemispherical emissivity of …
Influence of roughness and composition on the total emissivity of tungsten, rhenium and tungsten-25% rhenium alloy at high temperature. J. Alloys Compds. (2014) ... During the atmospheric reentry of thruster pieces at high velocity, the Haynes 25 alloy is submitted to high temperatures in an extreme environment with atomic oxygen. This is …Web
اقرأ أكثرRhenium | SpringerLink
Rhenium is a metal with one of the highest melting points of all the elements, exceeded by only tungsten and carbon. The general thermodynamic properties of rhenium are summarized in Table 4.1.For the molar heat capacity c p = f(T, K), J mol −1 K −1, the following relationship is recommended for the range of temperatures from 298 to 2500 K []Web
اقرأ أكثرMethods for improving ductility of tungsten
Table 1 summarizes the reported results on the effect of alloying elements on tungsten's DBTT. The tungsten-rhenium alloys are, of course, the most well-known tungsten alloy system enhancing ductility [23, 40, 41].Most reported research on tungsten-rhenium alloys shows the combined effects of rhenium alloying and thermomechanical …Web
اقرأ أكثرA review of refractory metal alloys and mechanically alloyed-oxide
In low-power SNRPSs, 316-stainless steel has been a suitable structure material for operating at ⩽923 ... Molybdenum–rhenium alloys, developed to remedy the lack of ductility of pure molybdenum at low temperatures, and to increase creep strength [19] and the resistance to oxygen embrittlement, are stronger but much heavier than niobium ...Web
اقرأ أكثرRHENIUM ALLOYS, INC. | LinkedIn
North Ridgeville, Ohio 44039, US. Get directions. RHENIUM ALLOYS, INC. | 298 followers on LinkedIn. Rhenium Alloys Inc. is a leading manufacturer of refractory metals and specialty fabricated ...Web
اقرأ أكثرLow-Cost Fabrication of Tungsten-Rhenium Alloys for Friction Stir
Friction stir welding (FSW) of high-melting temperature alloys, such as steel and Inconel, requires tooling that can survive under the applied loads at the elevated temperatures. Tungsten-Rhenium (W-Re) alloys are a suitable candidate for this application; however, the costs typically associated with achieving the required densities …Web
اقرأ أكثرThe Potential – pH Diagram for Rhenium
The mechanism of electrochemical reactions of rhenium species at stainless steel 316 electrodes and the effect of the pH in 0.5 M (NH4)(2)SO4 solutions containing 5 mM HReO4 (pH 1, 3, and 10) were ...Web
اقرأ أكثرEvaluation of oxide dispersion strengthened (ODS) molybdenum …
The effect of grain size on the DBTT for molybdenum alloys is presented in Fig. 2, which displays data for unalloyed powder metallurgy molybdenum (PM–Mo), ODS Mo with 2 and 4 volume percent oxide, and binary molybdenum–rhenium (Mo–Re) alloys in both the worked/stress-relieved condition as well as in the recrystallized condition. For a ...Web
اقرأ أكثرNiobium and Other High Temperature Refractory Metals for
Other rhenium alloys (with tungsten or molybdenum) are used for filaments, grid heaters, cathode cups, and igniter wires in photoflash bulbs. Rhenium has been used as a heat exchanger material for a solar rocket, nozzles for rocket thrusters, and in high temperature thermocouples. Also, rhenium is unique among refractory metals in that it …Web
اقرأ أكثرElectron beam and Nd-YAG laser welding of niobium-1
Instead, the niobium alloys Nb-1Zr and C-103, and lately molybdenum-rhenium (Mo-Re) alloys were considered, Kramer et al. 2000, El-Genk and King 2001, Giglio et al. 2001, DiStefano and Chitwood 2001.Web
اقرأ أكثرFirst-principles calculations of interaction between solutes and
The alloys of rhenium and molybdenum or with tungsten and having good hightemperature properties. F. Benesovsky (Ed.), Plansee Proceedings, ... Acta Mater., 141 (2017), pp. 304-316. View PDF View article View in Scopus Google Scholar [34] M.S. Daw. Elasticity effects in electronic structure calculations with periodic boundary conditions. …Web
اقرأ أكثرRhenium
Element Rhenium (Re), Group 7, Atomic Number 75, d-block, Mass 186.207. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. ... Well there are many of them. A good deal of the rhenium extracted is made into super-alloys to be used for parts in jet engines. Not surprisingly for a transition metal, rhenium is ...Web
اقرأ أكثرMicrostructure and Properties of Tungsten Rhenium Alloy …
The friction coefficients of the composite coatings are reduced by 6.8 %–21.6 % and 13.2 %–32.4 % compared with those of the Ni-base alloy coatings and the aluminum alloys, while the wear ...Web
اقرأ أكثرTHE CONSTITUTION OF RHENIUM-COLUMBIUM ALLOYS
The single-phase chi extends from 64 to 87% at 2200 deg C and undergoes a peritectic decomposition at 2720 deg C. At low temperatures, a peritectoid reaction is responsible for the appearance of a phase corresponding to ReCb. Its decomposition temperature is 1075 deg C. The solubility of niobium in rhenium is about 4% at 2720 and less than 2% ...Web
اقرأ أكثرIndustrial Services
Rhenium Alloys has the expertise and equipment to handle many industrial metal services, including Cold Isostatic Pressing, Heat-Treating (Annealing and Sintering), Swaging, …Web
اقرأ أكثرPROPERTIES OF DILUTE TUNGSTEN-RHENIUM ALLOYS …
tility was observed only with the 1.0 percent rhenium alloy. These compared with tran-sition temperatures of 215 ° and 235 ° F for worked sheet of unalloyed arc- and electron-beam-melted tungsten, respectively. Transition temperatures for the arc-melted 26-percent-rhenium alloy and the electron-beam-melted 24-percent-rhenium alloy wereWeb
اقرأ أكثرMicrostructure and Properties of Tungsten Rhenium Alloy …
ag n ea e s 2020 5:060 SS: 265076 | • Page 4 of 6 • ] } v W Jiang S (2020) Microstructure and Properties of Tungsten Rhenium Alloy Prepared by Laser Sintering. Int J Metall Met Phys 060Web
اقرأ أكثرRhenium Alloys
Rhenium alloys are used in nuclear reactors, semiconductors, thermocouples, electronic tube components, gyroscopes, parts for rockets, electrical contacts, thermionic …Web
اقرأ أكثرWhat Is Rhenium And What Are Its Applications?
The balance of these tungsten-rhenium alloys improves with an increase in rhenium concentrations, and this is the reason why tungsten-rhenium alloy has 27% rhenium, which is their solubility limit. Addition of rhenium to tungsten makes it possible for the composites to meet specific functions like improved ductility, higher resistivity, and ...Web
اقرأ أكثرRhenium Alloys: White papers and technical literature
Rhenium Alloys Inc. (RAI) was introduced to the friction stir welding (FSW) process by The Welding Institute (TWI) in early 1999 with the application of FSW of commercially pure titanium. At that time, RAI only produced tungsten 25% Rhenium (W25%Re) wire at (0.25 -0.5 mm) diameter for type C and D thermocouple wire.Web
اقرأ أكثرSelective laser melting of 316L stainless steel alloyed …
Results of al-loying rhenium into 316L alloy was done by consolidation of 316L and rhenium powders and processing of such prepared mixtures with the use of selective laser melting technology. The ...Web
اقرأ أكثرEvaluating Molybdenum-Rhenium Alloys Through Additive …
Although the solubility of rhenium in molybdenum allows for up to approximately 50 wt.% rhenium, the compositions in this present work were selected to study the effects of dilute amounts of rhenium in AM-produced alloys. Specimens were analyzed and compared based on chemical composition, room temperature flexural …Web
اقرأ أكثرEffect of ruthenium on microstructure and high
Two alloys were melted by the vacuum induction technique and turned into master alloys, and then directionally solidified into bars (16 mm in diameter and 230 mm long). All the bars were within 5° off [001] orientation by the macro-corrosion and electron backscatter diffraction (EBSD). ... Influence of small rhenium additions on the lattice ...Web
اقرأ أكثرChromium and chromium-based alloys: Problems and
This article presents an overview of publications on mechanical properties of chromium and chromium-based alloys, with particular emphasis on ductility at low temperature and strength at high temperature. Analysis of rather scattered data suggests that a chromium or chromium-based alloy can be ductilized at ambient temperature and is quite capable of …Web
اقرأ أكثرEffect of concentration of rhenium and temperature on mechanical
316.7: W-25 %Re: 283: ... and tensile strength (σm) differs between pure tungsten single crystals and tungsten-rhenium alloys (0 %, 5 %, 10 %, and 25 % at %Re). For pure tungsten, as the temperature increases, all mechanical properties (E, σe, and σm) decrease. Interestingly, these values continue to decline even further with higher ...Web
اقرأ أكثرEffects of rhenium on creep resistance in tungsten alloys
The addition of rhenium in tungsten not only improves the low temperature duc-tility of tungsten, but also increases its high tempera-ture creep strength. The combined beneficial effect of rhenium on tungsten makes rhenium also an essential element for many particle strengthened tungsten alloys such as W-Re-HfC and W-Re-ThO 2. In these alloys,Web
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