Niobium has a melting point of 4474 F, which is 256 degrees lower than that of molybdenum. Pure niobium is very ductile and can be cold worked easily at room temperature. As with tantalum, large reductions are possible between anneals.
The density of niobium is only slightly greater than that of steel and considerably less than that of other refractory metals with higher melting points. Because of this, and the high-temperature strength and favorable nuclear properties, there has been extensive development of niobium base alloys for airborne nuclear reactors.
Niobium has a melting point of 4474 F, which is 256 degrees lower than that of molybdenum. Development of niobium metal and its alloys for elevated-temperature structural applications was started only a few years ago, but considerable progress has been made since then. One factor that has been important in the development of niobium is its low […]
Refractory elements are important alloying additions in both nickel-base and ironnickel-base superalloys. They are responsible for the increased high temperature mechanical properties present in current superalloy systems. It has long been established that nickel-base and iron-nickel-base superalloys are “super” because they are strengthened by a dispersion of fine and coherent gamma-prime (y) and at times […]