Effects of nano-Al2O3 particle addition on grain structure evolution and mechanical behaviour of friction-stir-processed Al

Aluminium‐carbon nanotubes composites produced from friction stir processing and selective laser melting

“…The addition of multi‐wall carbon nanotubes to the friction stir processing resulted in a significant increase in the hardness value. The Orowan strengthening effect is believed to be the main reason for this behaviour observed .…”

“…Friction stir processing has attracted much research attention ever it was reported of its capability to fabricate particulate‐reinforced metal composites . A study was conducted on the friction stir processing of the nano‐Al 2 O 3 reinforced AA6061 alloy . The grain structure evolution and mechanical properties study observed that the reinforcement particles were uniformly dispersed with significant increases in micro‐hardness and tensile test strength.…”

Thermal stability of an ultrafine-grained dual phase TWIP steel

“…In recent years, processing of materials via different severe plastic deformation (SPD) procedures (e.g., equal channel angular pressing (ECAP) [1,2], high pressure torsion (HPT) [3,4], friction stir processing (FSP) [5][6][7][8], accumulative back extrusion (ABE) [9][10][11][12], etc.) has been viewed as an effective method to produce high-strength ultrafine-grained materials, and has driven significant metallurgical researches.…”

Influence of friction stir processing on the microstructure and mechanical properties of a compocast AA2024-Al 2 O 3 nanocomposite

“…The process is known to induce microstructural homogenisation, grain refinement and improved static properties in Al alloys [12][13][14][15][16][17]. Guo et al used FSP to fabricate Al-based nanocomposites and studied the effects of the nano-Al 2 O 3 particle addition on grain structure and mechanical properties [18]. They reported that the pinning effect of Al 2 O 3 particles retarded grain growth following recrystallization during FSP A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 4 and led to a more pronounced reduction in grain size [18].…”

“…Guo et al used FSP to fabricate Al-based nanocomposites and studied the effects of the nano-Al 2 O 3 particle addition on grain structure and mechanical properties [18]. They reported that the pinning effect of Al 2 O 3 particles retarded grain growth following recrystallization during FSP A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 4 and led to a more pronounced reduction in grain size [18]. Gandra et al used FSP to develop aluminium based functionally graded MMCs and examined the effect of overlapping direction on the surface and thickness layer [19][20][21].…”