Tantalum-tungsten alloys

Tantalum-tungsten alloys are in the refractory metals group that maintain useful physical and chemical properties even at high temperatures. The tantalum-tungsten alloys are characterized by their high melting point and the tension resistance. The properties of the final alloy are a combination of properties from the two elements: tungsten, the element with the highest melting point in the periodic table, and tantalum which has high corrosion resistance.
The Tantalum-Tungsten alloys typically vary in their percentage of Tungsten. Some common variants are:
Mechanical properties.
The alloys of tantalum-tungsten have high corrosion resistance, and refractory properties. The crystalline structure of the material is body-centered cubic with a substitutional solid solution with atoms of tungsten. The alloy also has a high melting point and can reach high elastic modulus and high tensile strength.
Phase diagram.
The equilibrium phase diagram of the alloy formed between the two components Tantalum and tungsten is a binary diagram, where the two components are totally soluble on each other. In this diagram the melting temperature of the two elements are shown. It can be seen that there are two lines, representing the solidus and liquidus.