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

Journal Key Engineering Materials (Volumes 321 - 323)
Volume Advanced Nondestructive Evaluation I
Edited by Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi
Pages 1370-1373
DOI 10.4028/www.scientific.net/KEM.321-323.1370
Citation C.W. Lee et al., 2006, Key Engineering Materials, 321-323, 1370
Online since October, 2006
Authors C.W. Lee, Dae Hyun Song, K.Y. Nam, B.H. Choi, Yong Ho Park, Kyung Mox Cho, Ik Min Park
Keywords Castability, Magnesium Alloy, Mechanical Properties
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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