Microstructure and mechanical properties of Al–Fe in situ nanocomposite produced by friction stir processing

Microstructure and texture evolution during accumulative roll bonding of aluminium alloy AA5086

“…Most of the deformation texture components strengthen significantly from the starting material while the inherited components (generally the recrystallization components) are retained during ARB. One of the important conditions for SPD generated microstructure is the avoidance of discontinuous dynamic recrystallization [24]. The strength invariance for recrystallization components suggests that intermediate annealing does not lead to discontinuous recrystallization (static or dynamic) during ARB.…”

“…Although microstructure and texture evolution in various ARB processed aluminium alloys have been documented previously [18][19][20][21][22][23][24][25], micro-mechanisms that lead to the formation of microstructure and texture has not been fully explored yet. The present research program is aimed at addressing this issue.…”

Effect of Processing Parameters on Microstructure and Mechanical Properties of an Al-Al11Ce3-Al2O3 In-Situ Composite Produced by Friction Stir Processing

“…[2] In a recent review article, [3] Ma addressed the current state of the understanding and development of FSP. A variety of effective FSP applications have been shown, as follows: (1) homogenizing the microstructure of Al-based nanocomposites, [4,5] (2) producing Al alloys with an ultrafine-grained structure [6][7][8] and Mg alloys, [9] (3) fabricating a fine-grained superplastic microstructure, [10,11] (4) refining the microstructure of cast-aluminum alloys, [12][13][14][15] (5) forming a surface composite on an aluminum substrate, [16] (6) forming an in-situ metal matrix composite, [17][18][19][20] etc.…”

“…A possible alternative is to synthesize the reinforcement in situ in the metal matrix. [23] Recent research work [17][18][19] has shown that in-situ aluminum matrix composites can be fabricated by FSP without a further consolidation process. The basic idea for fabricating the in-situ composites is to combine the hot-working nature of FSP and the exothermic reaction between aluminum and transition metals.…”

“…The FSP has been successfully applied to produce intermetallic-reinforced aluminum matrix composites from elemental powder mixtures of Al-Cu, Al-Ti, and Al-Fe. [17][18][19] Thermite reactions can occur between aluminum and an oxide of a less reactive metal, and stable Al 2 O 3 will be formed. Consequently, aluminum matrix composites reinforced by Al 2 O 3 particles can be produced by oxidealuminum displacement reaction.…”