Nanostructure and Phases Formation under Mechanical Alloying of Bynary Powder Mixtures of Fe and sp-Element (M); M = C,B,Al,Si,Ge,Sn

Abstract

The processes of mechanical alloying of iron and sp-elements (C, B, Al, Si, Ge, Sn) under identical conditions of mechanical treatment have been studied. General regularities and differences in the mechanisms and kinetics of solid state reactions have been ascertained. A microscopic model of mechanical alloying in these systems is suggested.Key words mechanical alloying · iron and sp-elements · solid state reactions · mechanisms · kinetics.

Peculiarities of the Synthesis of Ternary Fe-Al-Sn Intermetallic Compound from Mechanically Alloyed Materials

“…The process of phase transformations in mechanical alloying of Fe and Al powders for Fe 68 Al 32 composition has also been investigated in detail. [19,20] These studies found that a single-phase nanocrystalline alloy without significant milling media contamination can be obtained by alloying within 16 hours. Because the synthesis of the current sample was conducted using the same equipment under the same conditions, all synthesis details (mass of balls and loaded materials, alloying time, and so on) were as previously described [19,20] and presented above in the Experimental section.…”

“…Mechanical alloying synthesizes intermetallic compounds and solid solutions, including immiscible systems. [16] The process of alloying has previously been studied in detail, [17][18][19][20][21][22] where a mechanism for nanostructure formation, including in Fe-Al and Fe-Sn systems, has been suggested. The advantage of this process is that the state of the products is highly nonequilibrium.…”