Ferrotitanium

Ferro titanium or titanium-iron alloys depending on their mixing ratio of various intermetallic titanium-iron compounds in which iron and titanium can dissolve in excess. In addition, depending on the alloy composition nor various iron crystal specifications and intermetallic iron-carbon compounds occur. In general, there is a mixed structure of different crystals.

The ferro- titanium alloy has a eutectic point at a mixing ratio of about 80 % iron and 20% titanium. At this point, the iron -titanium alloy has a single melting point. Iron -titanium alloys are inter alia in shipbuilding, used as a base alloy for stainless steel production and in submarine construction.

The structure of titanium -iron alloy characterized by a particularly high tensile strength in excess of 2 GPa. It comes from the fact that two different intermetallic titanium-iron compounds are interlinked in a finely branched eutectic microstructure with each other.

One problem in manufacturing is the control of crystal growth under different cooling conditions. As a lamellar eutectic crystal growth can be observed as a result of a temperature gradient, which causes a correspondingly strong anisotropic material properties. The goal is a general dendritic finely toothed crystal structure of high strength.

The eutectic titanium -iron alloy is currently object of study of a large DFG Project at RWTH Aachen University and the Max -Planck-Institute Dusseldorf and the Leibniz Institute (Institute for Complex Materials ) in Dresden.

Swell

• Phase field diagram
• Research project titanium-iron alloy
• Iron-titanium

• Alloy