摘要
The microstructural evolution during partial remelting of dendritic AlSi7Mg alloys was studied with the help of an electrical fumace. The results show that it is difficult to change all the primary a dendrites into the spheroidal a phases, when the dendritic samples of AlSi7Mg alloy are remelted under 589 or (597±1)℃ and held on mis condition for 5 to 120 min. The results also show that the samples remelted can be deformed under the heavy force, if the holding time is longer under higher temperature.
The microstructural evolution during partial remelting of dendritic AlSi7Mg alloys was studied with the help of an electrical fumace. The results show that it is difficult to change all the primary a dendrites into the spheroidal a phases, when the dendritic samples of AlSi7Mg alloy are remelted under 589 or (597±1)℃ and held on mis condition for 5 to 120 min. The results also show that the samples remelted can be deformed under the heavy force, if the holding time is longer under higher temperature.
