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Effect of Al on the Castability, Tensile and Creep Properties of Mg-xAl-Zn

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Abstract:

The effect of Al content on the castability, tensile and creep properties of Mg-xAl-Zn alloy was investigated. The molten Mg-(3~11)Al-Zn alloys of 700 °C were poured into the mould designed to estimate castability. Tensile and creep tests were performed for the alloys. It has been shown that creep resistance decreased while tensile strength improved with increasing Al amount. Microstructure study revealed that morphology of Mg17Al12 is main factor determining the tensile and creep properties of as cast Mg-xAl-Zn alloys. The final purpose of this study is to develop the heat resistant Mg alloys to apply transportation systems such as automobile. Further study on effect of heat treatment and additional alloying elements on the microstructure and mechanical properties of Mg-xAl alloys is going to be performed.

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Periodical:

Key Engineering Materials (Volumes 321-323)

Pages:

1370-1373

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.321-323.1370

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Online since:

October 2006

Authors:

C.W. Lee, Dae Hyun Song, K.Y. Nam, B.H. Choi, Yong Ho Park, Kyung Mok Cho, Ik Min Park

Keywords:

Castability, Magnesium Alloy, Mechanical Property

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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