X-ray diffraction analysis of aluminium containing Al8Fe2Si processed by equal channel angular pressing

Structural evolution in nanocrystalline Cu obtained by high-energy mechanical milling: Phases formation of copper oxides

“…On the other hand, it was demonstrated in the case of fcc Ni metal and Ni-Co alloys during high energy mechanical milling, where 0.1 wt.% of oxygen would cause a lattice parameter increase of 0.35% [15]. The increase of the lattice parameter is probably also caused by the grain expansion due to the increase in the density of dislocations with their characteristic strain fields [15,33,34]. The decrease of the lattice parameter is probably explained by the presence of compressive stress fields within the non-equilibrium grain boundaries inside of crystallite [35].…”

Enhanced grain refinement due to deformation-induced precipitation during ambient-temperature severe plastic deformation of an Al–7%Si alloy

“…In engineering alloy systems, microstructure refinement during SPD is strongly dependent on the strain path and solute content [6], and the size and size distribution of second phases [7,8]. Furthermore, dynamic processes such as solute precipitation [9][10][11] or dissolution [12] may occur during large strain deformation and influence the extent and nature of microstructure refinement. Control of the initial state of the material, as well as the SPD processing conditions, is thus necessary to realize the full potential of the nanocrystalline state of such alloys for engineering applications.…”

The formation of (Al8Fe2Si, Al13Fe4) phases from Al-Fe-Si system by TE mode

“…This system is the key to understand transformation phases at Al/Fe/Si corners. This study put in evidence of using TE mode to produce Al 8 Fe 2 Si, -Al 9 FeSi 3 , and A1 13 Fe 4 phases; we demonstrated that the activation step has an effect on parameter cells of each phase produced by TE, the activation influences also on samples activated mechanically by giving some binary phases under what we call mechanical activation.…”

“…Production of these AlFeSi intermetallic compounds by TE method has not been studied in detail so far. A1 13 Fe 4 , Al 8 Fe 2 Si phases have many technologically and metallurgical applications and influence on phases formation in the Al-Fe-Si system [13][14][15].…”