Abstract：A large number of defects were found in the inner part of 7050 aluminum alloy ring forgings during ultrasonic flaw detection. The defects would influence the properties of forgings. They were easily exposed to the surface of finished products in the finishing process with a tremendous harm. In order to analyze the causes, the defects of 7050 aluminum alloy forgings were detected by means of macroscopic examination, metallographic microscope and scanning electron microscope. The morphology and distribution characteristics of the defects were confirmed. It showed that the analytical defects belonged to the typical AlMgO compound inclusions.
2021, Vol. 39 
