Comparison of Mechanical Properties of RE-7075 Al Alloy's Hot Rolled Sheet and Cold Rolled Sheet

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The experiment has studied the mechanical properties effect of rare earth(RE)-7075 Al alloy's hot rolled sheet and cold rolled sheet coursing by two-step aging treatment. The hot rolled sheet and cold rolled sheet were analyzed by EDS(energy dispersive spectrometer), SEM(scanning electron microscope) and tested by Brinell Hardness tester, Computer-controlled electronic universal testing. The results shows that the synthetical mechanical properties of hot rolled sheet exceeds cold rolled sheet. The tensile strength is higher approximately 80MPa, elongation is larger approximately 3% and Brill hardness is bigger approximately 30HB after the two-step aging treatment.

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661-664

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January 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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