Effect of zinc and mischmetal on microstructure and mechanical properties of Mg-Al-Mn alloy
2010
Mg-2Al-0.5Mn alloys with 0-0.5% Zn and 0.5%-1.0% La-Ce misch metal (MM) were prepared by metal mould casting method. Effect of alloying elements Zn and MM on microstructures were investigated by X-ray diffraction, optical microstructure and scanning electron microscope. The results showed that Zn and MM additions led to an obvious grain refinement. Addition of 0.5% Zn resulted in about 30% reduction in grain size for Mg-2Al-0.5Mn alloys, while 0.5% MM addition caused about 40% reduction in grain size. The t...
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