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In this paper, the microstructures of the eutectic and hyper-eutectic Al–Ge alloy under different pressures are observed by using OM and SEM for the analysis of the effects of pressure on eutectic structure in metallic alloys. It can be found that the eutectic microstructure of the Al–53 at.% Ge alloy was obviously refined with pressure increasing from 4.0 GPa to 5.0 GPa. The sibebranched eutectic...
The microstructure of Al 88 Ni 7 Y 5 solidified under 6.0 GPa has been analyzed by X-ray diffraction, metallography and SEM. The results show that the melted temperature of alloy can increased more than 400 °C and the grains and the secondary phase are remarkably fined after high pressure treatment.
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