Effect of Reversed Accumulative Roll Bonding Process on Microstructure, Mechanical Properties and Properties Inhomogeneity of AA1050 Alloy

Document Type : Research Article

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Abstract

In this research, 13 passes ARB process performed on AA1050 sheets. The microstructural improvement to achieving nanometer-sized grains during ARB process was studied. In this process, the sheets were rotated 180o around the normal direction (ND) axis after each rolling passes and preheated before each passes. Moreover, the changing of strength and elongation of the ARBed sheets during the process was investigated by uniaxial tensile test in three directions (roll direction (RD), transverse direction (TD) and angle of 45o toward RD); and then the inhomogeneity of mechanical properties in these directions was measured. The least of inhomogeneity occurred in three, four and thirteenth passes of process. Finally, micro-Vickers hardness was investigated throughout thickness of the sheets in this process. The strength and hardness of sheets increased at the early passes and then did not changed apparently at the middle passes of process; and subsequently they decreased gently. The elongation of sheets decreased swiftly at the first pass of process; and then it increased slowly.

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References

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Amirkabir Journal of Mechanical Engineering
Volume 48, Issue 2
September 2016
Pages 197-206

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