GH169合金制件中黑斑和白斑偏析的超声检验

何方成, 唐贞曾, 李家伟, 史亦韦

Ultrasonic Inspection of Freckle(channel) and White Spot Segregation in GH169 Alloy Unit

He Fangcheng, Tang Zhenzeng, Li Jiawei, Shi Yiwei

材料工程 . 1996, (10): 3 -5 .