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Microstructure and Mechanical Properties of Al-5%Mg-1%Mn-x%Zn Alloys  

Kim, Jeong-Min (Light Materials Team, Korea Institute of Industrial Technology)
Seong, Ki-Dug (Light Materials Team, Korea Institute of Industrial Technology)
Yoo, Jung-Hoon (Department of Metallurgy and Materials Science, Changwon National University)
Jun, Joong-Hwan (Light Materials Team, Korea Institute of Industrial Technology)
Kim, Ki-Tae (Light Materials Team, Korea Institute of Industrial Technology)
Jung, Woon-Jae (Light Materials Team, Korea Institute of Industrial Technology)
Publication Information
Journal of the Korean Society for Heat Treatment / v.18, no.1, 2005 , pp. 12-17 More about this Journal
Abstract
Effects of Zn and Zr additions on the microstructure and mechanical properties of Al-5%Mg-1%Mn alloys were investigated. As Zn content increased in the Al-Mg-Mn-Zn alloys, the tensile strength and ductility of as-cast alloys rather decreased while the tensile strength of the heat-treated alloys significantly increased mainly due to the precipitation of fine $MgZn_2$ phases. Small amount of Zr was added to the 3%Zn alloy to further enhance the mechanical properties, and it appeared to increase the strength and ductility, especially in as-cast state.
Keywords
Al-Mg alloy; Microstructure; Mechanical properties; Zn; Zr;
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