What is titanium aluminide alloy?
Titanium aluminide, TiAl, commonly gamma titanium, is an intermetallic chemical compound. It is lightweight and resistant to oxidation and heat, but has low ductility. The density of γ-TiAl is about 4.0 g/cm3. It finds use in several applications including aircraft, jet engines, sporting equipment and automobiles.
What are the typical phases in Ti alloys?
Using the common phases present at room temperature, titanium alloys are divided into four classes: commercially pure, alpha, alpha-beta, and beta.
Who invented titanium aluminide?
Light-weight Alloys AMG has innovated a number of specialty alloys and coatings used to help reduce weight and improve the operational performance of aircraft. Through extensive research beginning in the mid 1990s, AMG developed titanium aluminides (TiAl).
Is tial3 a metal?
Low density and high melting point make TiAl3 compounds a good candidate as metal matrix composites .
What is titanium aluminide used for?
Titanium aluminide alloys have potential for replacing heavier materials in high-temperature structural applications such as automotive and aerospace engine components.
Is aluminide a metal?
An aluminide is a compound that has aluminium with more electropositive elements. Since aluminium is near the nonmetals on the periodic table, it can bond with metals differently from other metals. The properties of an aluminide are between those of a metal alloy and those of an ionic compound.
What are titanium alloys?
Titanium alloys typically contain traces of aluminum, molybdenum, vanadium, niobium, tantalum, zirconium, manganese, iron, chromium, cobalt, nickel, and copper. The four grades, or varieties of titanium alloys are Ti 6AL-4V, Ti 6AL ELI, Ti 3Al 2.5 and Ti 5Al-2.5Sn.
What is alpha phase in titanium?
The alpha phase of titanium is close-packed hexagonal and its beta phase body centred cubic. In pure titanium, the alpha phase is stable below 882°C degrees and the beta above 882°C degrees. Alloying elements cause titanium’s atoms to organise themselves in either of these two phases.
What is aluminide coating?
Also known as aluminizing, aluminide coating is a high temperature chemical process where aluminum diffuses into the surface of the base metal to form an aluminized layer or coating. This process is commonly applied to carbon steels, low, and medium alloy steels and stainless steels and superalloys like Inconel.
What is boron aluminide?
Boron aluminide is an intermetallic alloy of boron and aluminium with properties similar to both a ceramic and a metal. Stanford Advanced Materials (SAM) is a leading supplier of boron aluminide with competitive prices and great lead times.
How are titanium alloys classified?
It is common practice in the metallurgical industry to refer to titanium alloys by their structure, hence alpha, alpha-beta, and beta alloys, examples of whichare given in table 1.