Effect of Dual Ultrasonic Probe Treatment on Solidification Structure for Large 7116 Aluminum Ingot in DC Casting
Author of the article:JIA Zheng;YU Bing;FU Li
Author's Workplace：School of Mechanical Engineering,Shenyang University,Shenyang 110044,China
Key Words：ultrasonic treatment 7116 aluminum alloy grain refinement DC casting
Abstract：Double ultrasonic treatment of 7116 aluminum alloy was carried out. The solidification microstructure of different parts was compared and the mechanism of ultrasonic refining was analyzed. The results show that the overall refining effect of the ingot is obvious,the solidification microstructure is more dispersed and fine,and the solidification microstructure of different parts is better than that of single ultrasonic refining. Compared with the ingot without ultrasonic treatment,the grain size at the edge,1/4 diameter and center of the ingot decrease by 63. 4%,76. 3% and 55. 5%,respectively.
