Directed Energy Deposition is an additive manufacturing technique for manufacturing or repairing of metallic parts. A number of studies have recently demonstrated that the part quality depends on various process parameters. However, the roles of gas related parameters and type of powder are still not well understood. In the present study, the influence of carrier gas flow rate, shielding gas and type of powder on the porosity and oxide contents of the as-deposited 316L steel, produced with the optimum process parameters, is investigated. The results show that, in order to obtain a rather fully dense component, optimum carrier gas flow rate and proper shielding gas together with as-received powder should be used. Furthermore, the research outcomes indicate that the presence of shielding gas and the type of used powder are an important key point to be considered in minimizing oxides in as-deposited parts.

Directed Energy Deposition of 316L Steel: Effect of Type of Powders and Gas Related Parameters / Bosio, Federico; Saboori, Abdollah; Lacagnina, Andrea; Librera, Erica; De Chirico, Michele; Biamino, Sara; Fino, Paolo; Lombardi, Mariangela. - CD-ROM. - (2018), pp. 1-6. ((Intervento presentato al convegno EURO PM2018 Congress & Exhibition tenutosi a Bilbao (SPA) nel 14-18 Ottobre 2018.

Directed Energy Deposition of 316L Steel: Effect of Type of Powders and Gas Related Parameters

BOSIO, FEDERICO;Abdollah Saboori;Sara Biamino;Paolo Fino;Mariangela Lombardi
2018

Abstract

Directed Energy Deposition is an additive manufacturing technique for manufacturing or repairing of metallic parts. A number of studies have recently demonstrated that the part quality depends on various process parameters. However, the roles of gas related parameters and type of powder are still not well understood. In the present study, the influence of carrier gas flow rate, shielding gas and type of powder on the porosity and oxide contents of the as-deposited 316L steel, produced with the optimum process parameters, is investigated. The results show that, in order to obtain a rather fully dense component, optimum carrier gas flow rate and proper shielding gas together with as-received powder should be used. Furthermore, the research outcomes indicate that the presence of shielding gas and the type of used powder are an important key point to be considered in minimizing oxides in as-deposited parts.
File in questo prodotto:
File Dimensione Formato  
3984816.pdf

non disponibili

Descrizione: Proceeding 1 EURO PM 2018
Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 230.92 kB
Formato Adobe PDF
230.92 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento 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: http://hdl.handle.net/11583/2715548
 Attenzione

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