Abstract. Tungsten rhenium wire is used for heating elements in high-temperature furnaces and thermocouples and in electronics. Its advantage is its ability to …

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Rhenium alloys Tungsten–rhenium alloys . W–Re alloys have a lower brittle-ductile transition temperature combined with a higher recrystallization temperature …

Tungsten alloy with addition of rhenium and tantalum was prepared by laser sintering. Microstructure and properties of the samples were tested by optical microscope, X-ray difractometer and ...

high elongations at 3630° F (2000° C) for tungsten alloys containing 20- to 30-atomic percent rhenium is reflected in the tensile strengths, which exhibit a distinct minimum in the vicinity of 28-atomic-percent rhenium (fig. 3). To determine the effects of annealing temperature on the tensile properties, speci mens were annealed at 3090° F ...

Tungsten–rhenium thermocouples are ideal alternatives to platinum–rhodium thermocouples for high-temperature measurement. This is attributed to the high thermal electromotive force, high melting point, rapid response, and cost efficiency of tungsten–rhenium thermocouples [1–3].ASTM International standardized a W–5% …

Our discovery of the solution softening-to-hardening transition, including its dislocation mechanism, clarifies the intrinsic effect of Re on the toughness of …

Tungsten has been suggested as a material in applications where it is irradiated by neutrons and undergoes trans-mutation to rhenium. Pure W has the bcc lattice structure. According to the equilibrium phase diagram about 30 at.% Re can go into a bcc W–Re solid solution. However, ab initio electronic structure calculations show that the bcc ...

Although tungsten (W) and W alloys are perceived as promising candidates for plasma-facing materials (PFMs) in fusion devices, its poor plasticity leads to processing difficulty. The rhenium (Re) addition can effectively improve the toughness and decrease the ductile-to-brittle transition temperature [11], [12], [13], and is beneficial to ...

W-25 Re Tungsten Rhenium Alloy, Annealed. Uses include thermocouples. Annealed applies only to tensile; other property values are typical of this alloy. Ductile to brittle transition temperature (DBBT) (-100) - (25) °C. Stress relieving temperature 1200-1400°C.

The Right Selection of Tungsten Metalizing Filaments for Your Thin Film Coating Needs. Rhenium Alloys is a major supplier of Metalizing Filaments to the vacuum metalizing and evaporation industries. They are engineered to provide reliable thin film coatings on automotive lamp reflectors, and various decorative applications in appliances ...

Tungsten-rhenium alloys are also applied in rotating anodes, e.g., for mammography, angiography and computer tomography (CT). These days the most frequent rhenium application is the production of superalloys for jet engines. The nickel superalloys contain 3–6% rhenium and are utilized in combustors, turbine blades and jet nozzles.

Tungsten-rhenium alloys, applied by vapor deposition, are used to coat the surface of molybdenum targets in X-ray tube manufacture. Other rhenium alloys, with tungsten …

A first-principles model for anomalous segregation in dilute ternary tungsten-rhenium-vacancy alloys. Journal of Physics: Condensed Matter, 29 (2017), Article 145403. View in Scopus Google Scholar [25] G. Kresse, J. Furthmüller. Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set.

They observed that an arc-melted tungsten–rhenium alloy can achieve an 11% reduction in thickness by cold rolling. In contrast, the CPW sample they trialed cracked at the beginning of the rolling process. Mutoh et al. compared the fracture toughness of tungsten specimens containing 0, 5, and 10 wt% of rhenium. Aside from a reduction in the ...

Sintering tungsten-rhenium (W-Re) alloys becomes difficult with increasing Re content, which is revealed by the final-stage bifurcation. The pressureless two-step sintering method is carried out to resolve the sintering conundrum and produces ultrafine-grained W-Re alloys containing up to 25 wt% Re with record-fine grain sizes, uniform …

Porous tungsten-rhenium powders with various compositions were prepared by a spray drying method combined with two-stage hydrogen reduction. Using the W-Re powders, W-Re alloy substrates were successfully fabricated by high temperature sintering under the protection of hydrogen. ... Tungsten-rhenium alloys have broad …

Rhenium Alloys provides a wide range of wire products to serve applications in major electronics products, thermocouples, high temperature furnace parts, and welding requirements. Tungsten Wire, a precision wire, with its very high tensile strength even at a very small diameter, and good electrical conductivity is widely used for thermocouples ...

Tungsten‐rhenium thermocouple systems were evaluated for use in measuring temperatures between 1600 and 3000°C. Temperature‐millivolt relationships were ex ... "Tungsten‐Rhenium Alloy Thermocouples and Their Use in a UO 2 ‐Fueled Reactor," ANL‐6981 (November 1965). 17. L. Fisher, J. Pendleton, J. O. Pounder, and . A. B.

Product Information Tungsten Rhenium Thermocouple Wire Type C: Tungsten 5% Rhenium versus Tungsten 26% Rhenium wire Type D*: Tungsten 3% Rhenium versus Tungsten 25% Rhenium wire Type G*: Pure Tungsten versus Tungsten 26% Rhenium wire * "Type D" and "Type G" are commonly used industry terms and not ASTM letter …

swelling of alloys under neutron and self-ion irradiation [ 6–8]. Third, alloying tungsten with rhenium is currently the only proven method to improve the ductility of unirradiated tung-sten [9, 10], although there are computational results suggest-ing that some other d-metals such as Zr, Fe and Ni, may also act the same way [10– 14].

Tungsten (W) is considered as a promising plasma facing material due to its good thermal conductivity, high melting point and good radiation resistance [1].It also has low sputtering yield and low tritium retention under the high-flux plasma conditions [2], [3], [4].By utilizing laser powder bed fusion (LPBF) technology, it is possible to manufacture …

Effects of rhenium on the high temperature mechanical properties of a tungsten‐1.0W/O thoria alloy. A. Luo K. Shin D. Jacobson. Materials Science. 2008. The mechanical properties of W‐Re‐1ThO2 alloys with rhenium concentrations from zero to 26 percent were determined over the temperature range 1600 to 2600 K.

Description. Tungsten Alloys provides a wide range of Wire products to serve applications in major electronics products, thermocouples, high temperature furnace parts, and welding requirements. Our Rhenium Wire is 99.99% pure and has high strength and excellent ductility. Molybdenum-47.5%-Rhe nium Wire is used in welding, electronics and wire ...

Tungsten-rhenium alloys have been found to be useful for such applications, since they have a combination of high strength and good ductility. The best ductility is reached in alloys with a rhenium content close to the solubility limit in tungsten. During manufacturing of such alloys the forming properties are adversely affected by the ...

The mechanical properties of various tungsten-rhenium alloys (0 %, 5 %, 10 %, and 25 % at %Re) were compared in Table 1. The impact of temperature on …

Learn how laser sintering can produce tungsten rhenium alloy with improved mechanical and thermal properties in this research paper by Shan Jiang. Download the full-text PDF for free on ResearchGate.

Introduction of rhenium into tungsten increased the recrystallization temperature, tensile strength, and plasticity of the system. Wires of a tungsten alloy containing 20 wt.% rhenium had a tensile strength of 160 to 190 kg/mm/sup 2/ and an elongation of 18 to 20% after annealing. The specific resistivity also increaesd considerably.

Surface modification and deuterium (D) retention in rhenium (Re) doped tungsten (Namely, W-5 wt.% Re) exposed to 100 eV deuterium plasma with a constant flux of 1.8 × 10 21 D/m 2 /s were investigated. All the samples were exposed to D plasma at three types of exposure conditions, namely, exposure with doses of 1.3 × 10 25 D/m 2 …

In this paper, a physics-based thermal conductivity model is developed to predict the effects of dislocation and grain size on the heat transfer process of pristine tungsten under a wide temperature range of 300–1200 K. W–Re alloys added with 1–25 wt% rhenium are studied to examine and analyze the variation of thermal conductivity.

Fukuda et al., reported tungsten-rhenium alloy showed a systematic change with rhenium concentration, but on the other hand, K-doped W showed almost same thermal diffusivity [4]. In their paper, W …

Rhenium. More than 80% of the global rhenium usage is in high-temperature superalloys for aircraft applications like turbine blades and engine parts. These alloys contain up to 6% rhenium, making jet engine construction the largest single use for the element. Rhenium is added to nickel-based super alloys to improve creep strength of the alloys.

Rhenium and rhenium-containing alloys are primarily produced by powder metallurgy (P/M) techniques. Melting of these materials in vacuum or in a high-purity inert-gas atmosphere often is prohibitively expensive and time-consuming, as is their production via chemical vapor deposition. ... Abstract Tungsten-rhenium alloys play an important …

Tungsten rhenium alloy is widely used in aerospace, weapon electronics, and other high-temperature fields. W25Re alloy bars were prepared by powder …