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http://dx.doi.org/10.3740/MRSK.2016.26.8.444

Analysis of Mechanical Properties with Addition of Zr in Al 2013-T8 Alloy for Galvanizing Equipment  

Baek, Min-Sook (Department of future strategic new Materials Engineering, Sunchon National University)
Cho, Sa-Hyeon (Department of future strategic new Materials Engineering, Sunchon National University)
Park, Man-Bok (Center for Practical Use of Rare Materials, Sunchon National University)
Yoon, Dong-Joo (Center for Practical Use of Rare Materials, Sunchon National University)
Heo, Ki-Bok (SAMWOO ECO., Ltd.)
Publication Information
Korean Journal of Materials Research / v.26, no.8, 2016 , pp. 444-448 More about this Journal
Abstract
In this study, the recently developed Al 2013 alloy was T8-tempered and, to improve the strength and corrosion-resistance, slight amounts of Zr of 0.2 wt% and 0.5 wt%, respectively, were added and the mechanical properties were analyzed. For microstructure and precipitate analysis, OM observation, XRD analysis, and TEM analysis were performed, and for the mechanical property analysis, hardness and tensile strength tests were done. Also, in order to determine the corrosion rate according to the Zr content, a potentiodynamic polarization test was performed and the properties were compared and analyzed. The size of the precipitate varied with the content of Zr and was finest at Zr content of 0.2 wt%; it grew larger at 0.5 wt%, at which point the hardness value accordingly showed the same trend. On the other hand, as calculated from the aspect of chemical bonding among atoms, it was confirmed that the tensile strength and the corrosion-resistance increased with the same trend.
Keywords
Al alloy; T8-tempered; Zr; property;
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