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Tungsten Alloys
Tungten Alloy |
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| Introduce(detail): Code: GMW
Density: (17-18.5) g/cm3
Main Component: W(88-98)% with the addition of nickel and copper or nickel and iron, etc.
Main Application: For making rotors of dynamic intertial materials, the stabilizers of aircraft wings, shielding materials for radioactive materials, containers in hospitals and for
adioactive isotope(Cobalt 60),and for material of armor piercing bullets and
moulds.etc Main Application: For making rotors of dynamic intertial materials, the stabilizers of aircraft wings, shielding materials for radioactive materials, containers in hospitals and for radioactive isotope (Cobalt 60), and for material of armor piercing bullets and moulds, etc.
Advantages High density Excellent mechanical properties such as high vibration-damping capacity and high Young's modulus. Excellent radiation-shielding property High thermal conductivity with low thermal expansion coefficient Higher high-temperature strength and thermal shock resistance High oxidation resistance and corrosion resistance **We supply this material as per customerized sizes and properties.
Tungsten heavy alloys illustrate the advantages of microencapsulated powders. A brief background of this alloy system follows. Tungsten heavy alloys generally are two-phase composites consisting of W-Ni- Fe or W-Ni- Cu or even W-Ni-Cu-Fe. Tungsten content in conventional heavy alloys varies from 90 to 98 weight percent and is the reason for their high density (between 17 and 18.6 g/cc). Nickel, iron and copper serve as a binder matrix, which holds the brittle tungsten grains together and which makes the alloys ductile and easy to machine. Nickel-iron is the most popular additive, in a ratio of 7Ni:3Fe or 8Ni:2Fe (weight ratio). The conventional processing route for tungsten heavy alloys includes mixing the desired amount of elemental powders, followed by cold pressing and liquid phase sintering to almost full density. The matrix alloy melts and takes some tungsten into solution during liquid phase processing, resulting in a microstructure through which large tungsten grains (20-60um) are dispersed in the matrix alloy. The as-sintered material often is subjected to thermo mechanical processing by swaging and aging, which results in increased strength and hardness in the heavy alloys. Conventional heavy tungsten alloys exhibit a unique property combination. Properly processed materials show a combination of high density, high strength, high ductility, good corrosion resistance, high radiation adsorption capability, and reasonably high toughness. This property combination has made this alloy a candidate for defense and civilian applications. Some of these applications include X-ray and γ-radiation shields, counter weights, defense purposes of kinetic energy penetrators, vibration dampening devices, medical devices for radioactive isotope containment, heavy-duty electrical contact materials, and balancing crankshafts for racing car engines, and gyroscopes. |
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| More Related Subjects: Nuclear Research radiation shielding Refractory Metals: Tungsten and Tungsten alloys Heavy Tungsten Alloy Applications |
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Key Products: | Tungsten Alloy |