Tungsten alloy Encyclopedia

Definition of tungsten alloy of tungsten-based alloys by adding other elements. In metals, the highest, high temperature strength and creep resistance and thermal conductivity, electrical conductivity and electron emission properties of tungsten melting point are good, than the major, in addition to a large number of alloys used in the manufacture of carbide and as additives, tungsten and its alloys are widely used electronic, electric light industry, but also aerospace, casting, weaponry and other sectors for the production of rocket nozzles, casting molds, penetrator, contacts, heating element and a heat shield and so on. Tungsten-based alloys are added other elements. In metals, the highest, high temperature strength and creep resistance and thermal conductivity, electrical conductivity and electron emission properties of tungsten melting point are good, than the major, in addition to a large number of alloys used in the manufacture of carbide and as additives, tungsten and its alloys are widely used electronic, electric light industry, but also aerospace, casting, weaponry and other sectors for the production of rocket nozzles, casting molds, penetrator, contacts, heating element and a heat shield and so on. Category 1, alloy molybdenum tungsten alloy containing molybdenum and tungsten two elements, which include molybdenum tungsten and molybdenum-based alloys and tungsten-based tungsten and molybdenum alloy series. The alloys can be formed in any proportion, are completely solid solution alloy at all temperatures. 2, niobium tungsten alloy of tungsten and niobium base added other elements to form a certain amount of niobium alloys. Tungsten and niobium unlimited solid solution. Tungsten, niobium and effective strengthening element, but with the increase of the added amount of tungsten, a plastic-brittle transition temperature of the alloy will rise significantly grown grains. Therefore, to obtain high-strength niobium-tungsten alloy, shall be suitably controlling the amount of tungsten, but must be appropriate to add grain refinement, lower element of a brittle transition temperature plastic such as zirconium and hafnium. In 1961, the United States developed alloy Nb-10W-2.5Zr successfully used the shuttle's skin, and later developed into a Nb-10W-1Zr-0.1C alloy. The early 1970s, China has successfully developed NbWl0Zr2.5 and NbWl0Zr1C0.1 alloys.