Effect of the Cyclic Extrusion and Compression Processing on Microstructure and Mechanical Properties of Al-1%Cu Alloy

Abstract:

The Simple Cyclic extrusion compression (SCEC) has been developed for producing Al-1%Cu alloys with fine microstructures and superior properties. SCEC method was applied for only two-passess.It was found that the grain structure was significantly reduced from 1500 μm to 100 μm after two passes of cyclic extrusion. The ultimate tensile strength and elongation to failure of as-cast alloy were 110 MPa and 12 %, respectively. However, the corresponding mechanical properties of the two pass CEC deformed alloy are 275 MPa and 35%, respectively. These findings ensure that a significant improvement in the grain structure has been achieved. In addition, cyclic extrusion deformation increased the surface hardness of the alloy by 50 % after two passes.

• Periodical: Key Engineering Materials (Volume 780)
• Pages: 93-97
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.780.93
• Online since: September 2018
• Authors: Walaa Abdelaziem*, Atef S. Hamada, Mohsen A. Hassan
• Keywords: Al-1%Cu Alloy, Cyclic Extrusion Compression, Grain Refinement, Severe Plastic Deformation

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