Hot extrusion reaction synthesis of nickel, titanium and iron aluminides

Oxidation resistance of SHS Fe–Al–Si alloys at 800 °C in air

“…Due to high porosity of the product, SHS processes followed by milling can be easily applied for the production of FeAl powder for further compaction [27], not to obtain the final product. Even a strong deformation by a hot extrusion during the Fe þ Al reaction does not eliminate the porosity completely [28]. However, it was proved in our previous work that a silicon addition can reduce the porosity significantly by changing the reaction mechanism [14,15].…”

Microstructure and mechanical properties of Ni3Al fabricated by thermal explosion and hot extrusion

“…The studies of Merzhanov and Podlesov [18,19] showed that the combustion synthesis and hot extrusion technology could not only well densify the alloy, but also avoid the crystal coarsening. Furthermore, Morsi and Minay [20][21][22] had found that the combustion synthesis and hot extrusion could well improve the microstructure and mechanical properties of Ni 3 Al. But few studies had been carried out on the boron and chromium doped Ni 3 Al.…”

Mechanically activated reactive forging synthesis (MARFOS) of NiTi

“…Less attention has been given to the hot deformation by extrusion/forging during the reaction synthesis of intermetallic compounds [25,[30][31][32][33]. Since during the reaction, the product is exposed to very high temperatures, a high-temperature transient window of short duration exists in which these materials can be malleable and most suitable for processing.…”