Staff Members - Benha University
Influence of Microstructural Characteristics on Electrical Discharge Wire Cutting Conditions of A390 Al-Si Hypereutectic Alloy
Mansoura Engineering Journal • 2006
Publication Information
Authors
Zakaria H. M., Gaafer A. M., Habib S. S., Mahmoud T. S.,
Keywords
Wire electrical discharge machining (WEDM), Al-Si hypereutectic alloys.
Journal
Mansoura Engineering Journal
Publisher
Mansoura Engineering Journal
Volume
31
Issue
2
Pages
32. 40
publication.type
International
Paper Link
Not Available
Supplementary Materials
Not Available
Abstract
The paper presents the results of an experimental investigation on the machinability of A390
hypereutectic Al-Si alloy using wire electrical discharge machining (WEDM). The effect of the modification and grain refinement treatments on the microstructure and also on the machining conditions has been evaluated. The process parameters taken into consideration are the average gap voltage (Aj), surface finish type (SF), pulse frequency (F), cutting speed (CS), material removal rate (MRR) and finally the kerf size (KS). The results show that the modification process of A390 alloy has a significant effect on the electrical discharge wire cutting (EDWC) parameters. It has a great influence on the improvement of MRR, CS, and KS. The modified alloy exhibits better machinability conditions when compared with both the as-cast and the grain refined A390 alloys. The grain refined A390 alloy shows lower machinability conditions when compared with the as-cast A390 alloy.
hypereutectic Al-Si alloy using wire electrical discharge machining (WEDM). The effect of the modification and grain refinement treatments on the microstructure and also on the machining conditions has been evaluated. The process parameters taken into consideration are the average gap voltage (Aj), surface finish type (SF), pulse frequency (F), cutting speed (CS), material removal rate (MRR) and finally the kerf size (KS). The results show that the modification process of A390 alloy has a significant effect on the electrical discharge wire cutting (EDWC) parameters. It has a great influence on the improvement of MRR, CS, and KS. The modified alloy exhibits better machinability conditions when compared with both the as-cast and the grain refined A390 alloys. The grain refined A390 alloy shows lower machinability conditions when compared with the as-cast A390 alloy.