The paper reports on the corrosion behavior of two aluminum alloys, with different silicon content, manufactured by means of laser powder bed fusion. The results of potentiodynamic tests and intergranular corrosion tests are discussed in order to evaluate the effect of film formed during manufacturing and successive stress relieving and plane orientation. The results show on both alloys the propagation of localized attack by selective dissolution of aluminum along borders of melt pool. A clear reduction of pitting potential was recognized on the surface as produced by the manufacturing process and less marked variations between different planes. The tests did not reveal a systematic variation of the pitting potential between the two alloys.

Valutazione della resistenza a corrosione di leghe di alluminio-silicio ottenute per LPBF / Cabrini, M.; Lorenzi, S.; Pastore, T.; Pellegrini, S.; Testa, C.; Manfredi, D.; Calignano, F.; Fino, P.; Cattano, G.. - In: LA METALLURGIA ITALIANA. - ISSN 0026-0843. - ELETTRONICO. - 109:7-8(2017), pp. 123-126.

Valutazione della resistenza a corrosione di leghe di alluminio-silicio ottenute per LPBF

Manfredi, D.;Calignano, F.;Fino, P.;Cattano, G.
2017

Abstract

The paper reports on the corrosion behavior of two aluminum alloys, with different silicon content, manufactured by means of laser powder bed fusion. The results of potentiodynamic tests and intergranular corrosion tests are discussed in order to evaluate the effect of film formed during manufacturing and successive stress relieving and plane orientation. The results show on both alloys the propagation of localized attack by selective dissolution of aluminum along borders of melt pool. A clear reduction of pitting potential was recognized on the surface as produced by the manufacturing process and less marked variations between different planes. The tests did not reveal a systematic variation of the pitting potential between the two alloys.
2017
File in questo prodotto:
File Dimensione Formato  
065.pdf

accesso aperto

Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: PUBBLICO - Tutti i diritti riservati
Dimensione 1.5 MB
Formato Adobe PDF
1.5 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2707908
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo