摘要:The solidification structure of Ph-- 60wt%Sn alloy could be modified by two patterns of pulse electric discharging (PED). It is found that Ph--rich primary phase --dendritic is broken off into globular under PED with big capacitance,and under continuous PED with small capacitance and high voltage, the eutectic grains are pulled long along the electrods direction,the eutectic lamellars grow along the same direction and the lamellar spacing becomes small. Finally,the role played by PED on solidification structure has been discussed.
关键词:Pulse Electric Discharging;Globular Structure;Eutectic Structure
摘要:As a new method for repidly evaluating aluminium melt cleanliness, the principle equation has been derived, and based on the equation, the primary factors that affect detection’s repeatability and resolving power were investigatad. Appropriate operating parameters have been selected by tests. The results demonstrate that this method is an effective one to rapidly assess aluminium melt cleanliness.