Direct Metal Laser Sintering (DMLS) is a free-form manufacturing process that enables the production of components with a very complex shape in a single step, without using a mold, thus decreasing the production costs and time. In this work, a Ni-based superalloy, known as Hastelloy X, has been developed by DMLS. The microstructure and hardness of the -Hastelloy X produced are very different with respect to the traditional manufacturing, therefore it is necessary to specifically study the heat treatment. The change of microstructure after heat treatment has been studied with optical microscopy and scanning electron microscopy, whilst the phases present by X-ray diffraction analysis. It has been observed that the heat treatment modifies the grain size and also causes the precipitation of carbides, thus impacting on the hardness.

Heat treatment optimization of Hastelloy X superalloy produced by Direct Metal Laser Sintering / Marchese, Giulio; Biamino, Sara; Pavese, Matteo; Ugues, Daniele; Lombardi, Mariangela; Vallillo, Gianfranco; Fino, Paolo. - CD-ROM. - (2015). (Intervento presentato al convegno Euro PM2015 tenutosi a Reims (FR) nel 4-7 Ottobre 2015).

Heat treatment optimization of Hastelloy X superalloy produced by Direct Metal Laser Sintering

MARCHESE, GIULIO;BIAMINO, SARA;PAVESE, MATTEO;UGUES, Daniele;LOMBARDI, MARIANGELA;FINO, Paolo
2015

Abstract

Direct Metal Laser Sintering (DMLS) is a free-form manufacturing process that enables the production of components with a very complex shape in a single step, without using a mold, thus decreasing the production costs and time. In this work, a Ni-based superalloy, known as Hastelloy X, has been developed by DMLS. The microstructure and hardness of the -Hastelloy X produced are very different with respect to the traditional manufacturing, therefore it is necessary to specifically study the heat treatment. The change of microstructure after heat treatment has been studied with optical microscopy and scanning electron microscopy, whilst the phases present by X-ray diffraction analysis. It has been observed that the heat treatment modifies the grain size and also causes the precipitation of carbides, thus impacting on the hardness.
2015
978-1-899072-47-7
File in questo prodotto:
Non ci sono file associati a questo prodotto.
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/11583/2646135
 Attenzione

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