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A pure aluminum matrix composite reinforced by Bi2O3-coated aluminum borate whisker was fabricated by a squeeze casting method. The mass ratio of Bi2O3 to whisker is 1:30. The interfacial reaction between Bi2O3 coating and aluminum takes place during casting process. Deformation behavior and formability of ABOw reinforced aluminum (ABOw/Al) composites with and without Bi2O3 coating were investigated by the extrusion deformation at 400℃. The results show that the steady-state extrusion load and the probability of whisker fracture of extruded ABOw/Al composite with Bi2O3 coating are lower than those of extruded ABOw/Al composite, and its surface quality is better than that of extruded ABOw/Al composite. Evaluation of the tensile properties shows that the extruded ABOw/Al composite with Bi2O3 coating have the ultimate tensile strength and yield strengths with 0.2% superior to those of ABOw/Al composite.
A pure aluminum matrix composite reinforced by Bi2O3-coated aluminum borate whisker was fabricated by a squeeze casting method. The mass ratio of Bi2O3 to whisker is 1:30. The interfacial reaction between Bi2O3 coating and aluminum takes place during a casting process. Deformation behavior and formability of ABOw reinforced aluminum (ABOw / Al) composites with and without Bi2O3 coating were investigated by the extrusion deformation at 400 ° C. The results show that the steady-state extrusion load and the probability of whisker fracture of extruded ABOw / Al composite with Bi2O3 Coating of lower than those of extruded ABOw / Al composite, and its surface quality is better than that of extruded ABOw / Al composite. Evaluation of the tensile properties shows that the extruded ABOw / Al composite with Bi2O3 coating have the ultimate tensile strength and yield strengths with 0.2% superior to those of ABOw / Al composite.