Abstract
A new approach to metal casting has been developed that uses microwave radiation at 2.45 GHz to melt and heat the metal. At microwave powers of 600, 800, and 1000 W, AA2024 is employed as a charge material. Three susceptor materials WC and Silicon Carbide—are used in the process, and the solidification takes place in two stages, one in a closed cavity and the other in an open one. It was discovered that tightly cast samples 15 and 9 had smaller equiaxed grains and micro indentation hardness testing. Intermetallic phases of Al2Mg3 and MgZn2 were detected in these cast samples, however, cast specimen 18 includes intermetallic stages of Al2Mg3, Magnesium Zinc, and Al2Mg3. This study discovered that the solidification atmosphere, microwave power, and susceptors affect grains and intermetallic precipitates. In this study, the micro indentation hardness (HV)of cast sample 18 is about 166 HV, larger than the other casts. The hardness, porosity, and XRD characterization of the generated casts is examined. Rapid solidification and increasing microwave power affect the composition, distribution and size of eutectic stages, leading to a rise in micro indentation hardness.
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