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Proceedings Paper

Thermal field monitoring and analysis of its influence on Direct Laser Deposition of single tracks of a nickel superalloy
Author(s): Sabina L. Campanelli; Andrea Angelastro; Marco Latte; Antonella Rizzo; Fania Palano
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Paper Abstract

Direct Laser Metal Deposition (DLMD) has been successfully applied for the coating or the repair of several kind of components, such as molds and dies. Recently, the aeronautical sector is also showing a high interest in this process for the repair of turbines and transmissions. However, technical requirements to be met for the repair of aeronautical components are much more stringent than standards of other industrial fields. Some of the deposited material defects that need to be carefully controlled are cracks and porosity, which largely depend on the temperature peaks and the cooling rates generated during the process. The aim of this work is to monitor the temperature field that was generated during the DLMD process, analyze its variation with some process parameters and study its effects on clad geometry and on dilution with the substrate. In this research, a number of experimental tests were designed for the deposition of single clads of a Nickel superalloy powder on an AISI 304 stainless steel substrate, using an Ytterbium fiber laser source. Temperature fields monitoring was carried out using a thermal camera capable of detecting temperatures up to 2500 °C.

Paper Details

Date Published: 26 February 2018
PDF: 9 pages
Proc. SPIE 10523, Laser 3D Manufacturing V, 105231B (26 February 2018); doi: 10.1117/12.2297667
Show Author Affiliations
Sabina L. Campanelli, Politecnico di Bari (Italy)
Andrea Angelastro, Politecnico di Bari (Italy)
Marco Latte, Politecnico di Bari (Italy)
Antonella Rizzo, ENEA (Italy)
Fania Palano, ENEA (Italy)

Published in SPIE Proceedings Vol. 10523:
Laser 3D Manufacturing V
Henry Helvajian; Bo Gu; Alberto Piqué, Editor(s)

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