Effect of ultrasonic melt treatment on degassing of Mg-6Zn-1Ca alloy  

作　　者：Zheng Jia Wen-ming Zhang Fu Yang Zhi-qiang Zhang Qi-chi Le Jian-zhong Cui 

机构地区：[1]College of Mechanical Engineering, Shenyang University [2]Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education,Northeastern University

出　　处：《China Foundry》2015年第1期15-19,共5页中国铸造（英文版）

基　　金：supported by the Major State Basic Research Development Program of China(2013CB632203);the National Key Technology R&D Program of China(2012BAF09B01);the Liaoning Provincial Natural Science Foundation(Grant No.201202072);the Program for Liaoning Excellent Talents in University(Grant No.LJQ2012023);the Fundamental Research Foundation of Central Universities(N120509002 and N120309003)

摘　　要：The effect of ultrasonic power and treatment time on degassing of Mg-6Zn-1Ca alloy was studied in this paper. The degassing effect was characterized by measuring densities of ingots. The results show that proper ultrasonic treatment can remove hydrogen from the melt of the Mg-6Zn-1Ca alloy. The ultrasonic degassing effect is closely related to the ultrasonic power density and treatment time. The degassing efficiency increases with an increase in ultrasonic power density when the melt is treated at 690 °C for 120 s, reaching its highest value at 1.2 W·cm-3. When the power density is 1.2 W·cm-3, with an increase in ultrasonic treatment time, the degassing efficiency increases at first, reaches its peak value at 120 s, then decreases as the ultrasonic treatment is further prolonged. In this experiment, the optimum degassing effect with an efficiency of 67.5 % is obtained by ultrasonic treatment with the power density of 1.2 W·cm-3 for 120 s. The maximum density of ingot can be increased from 1.8069 g·cm-3 to 1.8146 g·cm-3(increased by 0.43%).The effect of ultrasonic power and treatment time on degassing of Mg-6Zn-1Ca alloy was studied in this paper. The degassing effect was characterized by measuring densities of ingots. The results show that proper ultrasonic treatment can remove hydrogen from the melt of the Mg-6Zn-1Ca alloy. The ultrasonic degassing effect is closely related to the ultrasonic power density and treatment time. The degassing efficiency increases with an increase in ultrasonic power density when the melt is treated at 690 °C for 120 s, reaching its highest value at 1.2 W·cm-3. When the power density is 1.2 W·cm-3, with an increase in ultrasonic treatment time, the degassing efficiency increases at first, reaches its peak value at 120 s, then decreases as the ultrasonic treatment is further prolonged. In this experiment, the optimum degassing effect with an efficiency of 67.5 % is obtained by ultrasonic treatment with the power density of 1.2 W·cm-3 for 120 s. The maximum density of ingot can be increased from 1.8069 g·cm-3 to 1.8146 g·cm-3（increased by 0.43%）.

关 键 词：ultrasonic treatment degassing efficiency Mg-6Zn-1Ca alloy CAVITATION 

分 类 号：TG146.22[一般工业技术—材料科学与工程]