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A fine-grained Mg alloy was fiber-laser welded, and microstructures and texture in the welds were extensively examined, together with the effect on mechanical properties. Fusion zone, which has lower hardness than BM and HAZ, consists of columnar grain zone and equiaxed grain zone with coarser grains. Strong texture with the same orientation as base metal forms at columnar grain zone. With decreasing...
The effect of the welding speed and the rotation speed on the microstructure in the stir zone has been investigated by measuring the Si particle distribution in the ADC12 alloy. The stir zone has fine recrystallized grains without dendritic structures, and the eutectic Si was uniformly dispersed in the stir zone. The size of the Si particles was statistically determined in the stir zone using image...
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