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 coatin...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.展开更多
基金Projects supported by the Reward of the Outstanding Young Teacher's Teaching Scientific Research of Institution of Higher Education
文摘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.
