Sensitivity of Localized Corrosion of Additively Manufactured Alloy N06210 in Green death solution

摘要

Additively manufactured (AM) Nickel, Titanium and Cobalt base alloys have been intensively developed for turbine, sour gas and medical applications. It was previously reported that the low porosity product of AM N06210 fabricated by selective laser melting showed corrosion rates in several acidic solutions similar to the ones of corresponding wrought N06210 alloys. And the corrosion rates of high porosity AM products of N06210 became higher. The present paper reports on dependency of pitting and crevice corrosion sensitivity of AM N06210 in green death solution on porosity, surface finish and AM building direction. The paper discusses the mechanisms of several features observed in both tests.