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Fabrication and mechanical properties of high performance 2024 aluminum alloy |
CAO Hui-qin,GUO Zhi-meng,YE An-ping,LUO Ji |
Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract High performance Al-Cu-Mg alloy was fabricated by high energy ball milling, nitrogen sintering and hot extrusion. The microstructure and mechanical properties of the material were investigated. Results show that the formation of liquid phase during sintering promotes the aluminum alloy densification. Relative density of 97.1% can be achieved after sintering. The 2024 aluminum alloy shows excellent mechanical properties after extrusion and T6 heat treatment. The ultimate tensile strength and yield strength are 612 MPa and 465 MPa, respectively, which is superior to those of conventional 2024 aluminum alloy.
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Received: 08 October 2015
Published: 08 December 2015
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