Microstructures and tensile properties of hot-extruded composite Bi2O3-coated 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 casting process. Deformation behavior and formab...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2006-12, Vol.16 (Special 3), p.s1285-s1288
Main Authors: Li, Zhi-Jun, Wang, Li-Dong, Yue, Hong-Yana, Fei, Wei-Dong
Format: Article
Language:English
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Summary: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/A1) composites with and without Bi2O3 coating were investigated by the extrusion deformation at 400 deg C. The results show that the steady-state extrusion load and the probability of whisker fracture of extruded ABOw/A1 composite with Bi2O3 coating are lower than those of extruded ABOw/A1 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/A1 composite.
ISSN:1003-6326