Mechanical Properties and Microstructures of Al-12Zn-2.4Mg-1.2Cu Alloy Extruded Sheet

Abstract:

Mechanical properties of Al-12Zn-2.4Mg-1.2Cu alloy extruded sheet were investigated by tensile tests. Microstructures were investigated by optical microscopy (OM) and scanning electron microscope (SEM). The result shows that no matter in the L direction or in the T direction, the tensile strength and yield strength decrease with the increasing of the extrusion temperature in different states. The tensile strength and yield strength in the L direction are higher than in the T direction at different extrusion temperatures and different treatment states. When temperature is 340°C, the highest tensile strength is 780 MPa and the highest yield strength is 753 MPa in the two-stage solution and two-stage aging state. The reason for the higher mechanical properties are in the L direction in different states is mainly depend on the distribution direction of the grains.

• Periodical: Advanced Materials Research (Volume 893)
• Pages: 402-405
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.893.402
• Online since: February 2014
• Authors: Gang Chen*, Zhi Min Zhang, Wei Chen
• Keywords: Extruded Sheet, Mechanical Property, Microstructure, Transverse Direction Longitudinal Direction, Two-Stage Aging, Two-Stage Solution

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