Synthesis and disordering of B2 TM-Al (TM = Fe, Ni, Co) intermetallic alloys by high energy ball milling: A review

In order to satisfy the need for improved high performance materials for advanced engineering applications, intermetallic alloys have emerged as the most promising materials. Transition metal aluminides, including FeAl, NiAl and CoAl, are of great importance since these materials have not only good strength-to-weight ratio but also excellent corrosion and oxidation resistance. A lot of processing techniques were developed in order to synthesize these materials, such as mechanical alloying or high-energy ball milling. Indeed, mechanical alloying (MA) is one of the methods of producing homogeneous, fine-grained alloys in the solid state. The importance of this processing route lies on the possible ductilization of these brittle intermetallics by grain refinement and/or by the introduction of disorder. The aim of this review is to update and to offer an assessment of the investigations being carried out on B2 TM-Al (TM = Fe, Ni, Co) intermetallic alloys and to highlight their formation and disordering by high energy ball milling. (C) 2017 Elsevier B.V. All rights reserved.