Fabrication of Ti-Al composite coatings by the mechanical alloying method

Welding and Joining of Titanium Aluminides

“…Another important application for joining of TiAl by combustion synthesis is to fabricate a protective coating on Ti alloy and steel substrates [ 126 , 127 , 128 , 129 ]. The mixed Ti-Al coating powders were put on the suface of the substate.…”

“…Then the specimen was heat treated at high temperature to ensure the sufficient combustion reaction in Ti-Al system to form TiAl and simultaneously join with the substrate. Romankov et al [ 126 , 127 ] deposited Ti + Al coatings (with a thickness of 200 μm) on Ti alloy substrates by means of the mechanical alloying method. Annealing treatment at temperature ranging between 600 and 1100 °C ignited the reaction between Ti and Al to form different Ti-Al intermetallics on the samples.…”

Effect of process parameters on the formation of Ti–Al coatings fabricated by mechanical milling

“…This method has been applied for fabricating Ni-Al and Fe-Al coatings; similar structures and tendencies in the coating formation for these systems to those for the Ti-Al system were observed [1,2,[4][5]. Furthermore, the method has been successfully used for depositing hard coatings such as TiN and TiC/TiN on different substrates [6,7].…”

“…This method is especially attractive for the fabrication of composite coatings [2,3]. Recent research has indicated that high ductility can be more easily achieved in multiphase structures and that grain boundary sliding can be a primary mechanism for superplasticity.…”

“…In our previous papers [1][2][3], we introduced the concept of mechanical alloying (MA), also known as the mechanical milling method; this method can be used for the fabrication of Ti-Al coatings. Fig.…”