Classified tungsten alloy
Molybdenum tungsten alloy containing two elements, molybdenum and tungsten, which include molybdenum-based tungsten alloys and tungsten-based molybdenum alloy series. The alloy can be formed in any proportion and is a fully solid solution alloy at all temperatures.
Niobium tungsten alloy niobium alloy formed by adding a certain amount of tungsten and other elements based on niobium. tungsten and niobium form an infinite solid solution. Tungsten is an effective strengthening element of niobium, but with the increase of tungsten addition, the plastic-brittle transition temperature of the alloy will rise, and the grain size will also grow significantly. Therefore, to obtain high strength niobium tungsten alloy, it is necessary to properly control the amount of tungsten added, at the same time, it is necessary to add appropriate amount of elements such as zirconium and thallium that refine grain and reduce the temperature of plastic-brittle transition. The United States developed a Nb-10W-2.5Zr alloy for shuttle skin in 1961 and later developed into a Nb-10W-1Zr-0.1C alloy. NbWl0Zr2.5 and NbWl0Zr1C0.1 alloys were also developed in China in the early 1970s.
Cemented carbide is one of the most common and dominant forms of tungsten alloy. Unlike the previous tungsten alloys, it is tungsten and carbon, cobalt, so it is often called tungsten cobalt alloy. The most widely used tools in industry are basically cemented carbide tools, so the tungsten alloy is also called "industrial teeth ".
