Characterization of non-metallic inclusions in corrosion -resistance nickel - based EP718 and 718 alloys by using electrolytic extraction methodAndrey Karasev, Ekaterina Alekseeva, Aleksey Lukianov and Pär G. JönssonE3S Web Conf., 121 (2019) 04004DOI: https://doi.org/10.1051/e3sconf/201912104004