Abstract：Excessive defects were found in the inner part of 06Cr17Ni12Mo2 alloy ring forgings during ultrasonic flaw detection. The defects would affect the properties of the forgings. They were easily exposed to the surface of the finished product in finishing process, which was very harmful. In order to analyze the reasons, the defects in 06Cr17Ni12Mo2 alloy ring forgings were detected by means of macroscopic examination, metallographic microscope and scanning electron microscope. The morphology and characteristics of the defects were confirmed. It was found that tested defects belonged to the typical AlSiO compound inclusions.
2022, Vol. 40 
