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51318-11087-Corrosion Behavior of Additively Manufactured Alloy N06210 in acidic solutions

Corrosion rates of low porosity AM S31603 and AM N06210 in several kinds of acidic solutions were similar to those of wrought alloys respectively, the corrosion rates of AM S31603 and AM N06210 became higher with increasing porosity of each specimen.

Product Number: 51318-11087-SG
Author: Yuzo DAIGO / Katsuo SUGAHARA / Syuhei OGOSHI / Kosuke KUWABARA
Publication Date: 2018
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Additive manufacturing is a method to manufacture 3D shape of resin or metal. Searching proper manufacturing condition and evaluating mechanical property and microstructure of Titanium-base, Cobalt-base, Nickel-base alloys and stainless steel for the fields such as aerospace, medical and defense field have been progressed. However, there are not many reports about corrosion and oxidation resistance of these alloys especially, there are a few reports about their corrosion resistance in acidic solutions. In this study, high and low porosity specimens of additively manufactured (AM) alloys of UNS+ N06210 and UNS S31603 were prepared intendedly with the selective laser melting (SLM) method. The high and low porosity specimens of AM N06210 and AM S31603 were immersed in several kinds of acidic solutions to estimate their corrosion rate and understand the dependency of the corrosion properties of those on porosity. The paper reveals that corrosion rates of low porosity AM S31603 and AM N06210 in several kinds of acidic solutions were similar to those of wrought alloys respectively, the corrosion rates of AM S31603 and AM N06210 became higher with increasing porosity of each specimen.

Key words: Additive manufacturing, Corrosion, Localized corrosion, N06210, S31603, Sulfuric acid, Hydrochloric acid, hydrofluoric acid

 

Additive manufacturing is a method to manufacture 3D shape of resin or metal. Searching proper manufacturing condition and evaluating mechanical property and microstructure of Titanium-base, Cobalt-base, Nickel-base alloys and stainless steel for the fields such as aerospace, medical and defense field have been progressed. However, there are not many reports about corrosion and oxidation resistance of these alloys especially, there are a few reports about their corrosion resistance in acidic solutions. In this study, high and low porosity specimens of additively manufactured (AM) alloys of UNS+ N06210 and UNS S31603 were prepared intendedly with the selective laser melting (SLM) method. The high and low porosity specimens of AM N06210 and AM S31603 were immersed in several kinds of acidic solutions to estimate their corrosion rate and understand the dependency of the corrosion properties of those on porosity. The paper reveals that corrosion rates of low porosity AM S31603 and AM N06210 in several kinds of acidic solutions were similar to those of wrought alloys respectively, the corrosion rates of AM S31603 and AM N06210 became higher with increasing porosity of each specimen.

Key words: Additive manufacturing, Corrosion, Localized corrosion, N06210, S31603, Sulfuric acid, Hydrochloric acid, hydrofluoric acid

 

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