Effect of RE Addition on Microstructure and Properties of As-Cast Mg-6Zn-Zr Alloy

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Abstract:

Typical as-cast microstructure of the MgZnRE-Zr alloys consists primarily of Mg matrix, MgZn and MgRE phases. Although the electrical conductivity was a slightly reduced by Ce-rich RE addition, the conductivity was remained high. Microhardness at room temperature and tensile strength at 200°C were clearly enhanced by the addition. Fluidity as mold filling ability was observed to increase significantly with the RE addition partly due to reduced grain size and solidification range, however the corrosion resistance predicted from polarization curves was little decreased.

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110-114

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June 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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