In this paper the innovative arc-fiber laser welding process (hybrid welding) was investigated on steel parts built by the Selective Laser Melting (SLM) process. SLM is probably the most rapidly growing technique in Additive Manufacturing (AM) technologies. This success results mainly from the possibility to create metal parts with complex shape, intrinsic engineered features and mechanical properties comparable with those of components produced with traditional processes. One of the limitation of the process is represented by the small dimensions that can be processed; this is mainly due to the high residual stresses generated during the process. A preliminary study was performed on the possibility of welding SLM parts. The choice of the hybrid arc-fiber laser welding was justified by the possibility of this process to avoid air inclusions and fill gaps along the seam due to the relevant roughness of SLM parts. The hybrid joints were characterized in terms of micro-hardness, microstructure and shape of the transverse cross section. Comparisons between wrought, sintered and dissimilar welds were performed

Preliminary investigation on hybrid welding of selective laser molten parts / Campanelli, Sabina Luisa; Angelastro, Andrea; Ludovico, Antonio Domenico; Casalino, Giuseppe; Contuzzi, Nicola. - ELETTRONICO. - (2011), pp. 652-660. (Intervento presentato al convegno 30th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2011 tenutosi a Orlando, FL nel October 23-27, 2011).

Preliminary investigation on hybrid welding of selective laser molten parts

Sabina Luisa Campanelli;Andrea Angelastro;Antonio Domenico Ludovico;Giuseppe Casalino;Contuzzi, Nicola
2011-01-01

Abstract

In this paper the innovative arc-fiber laser welding process (hybrid welding) was investigated on steel parts built by the Selective Laser Melting (SLM) process. SLM is probably the most rapidly growing technique in Additive Manufacturing (AM) technologies. This success results mainly from the possibility to create metal parts with complex shape, intrinsic engineered features and mechanical properties comparable with those of components produced with traditional processes. One of the limitation of the process is represented by the small dimensions that can be processed; this is mainly due to the high residual stresses generated during the process. A preliminary study was performed on the possibility of welding SLM parts. The choice of the hybrid arc-fiber laser welding was justified by the possibility of this process to avoid air inclusions and fill gaps along the seam due to the relevant roughness of SLM parts. The hybrid joints were characterized in terms of micro-hardness, microstructure and shape of the transverse cross section. Comparisons between wrought, sintered and dissimilar welds were performed
2011
30th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2011
Preliminary investigation on hybrid welding of selective laser molten parts / Campanelli, Sabina Luisa; Angelastro, Andrea; Ludovico, Antonio Domenico; Casalino, Giuseppe; Contuzzi, Nicola. - ELETTRONICO. - (2011), pp. 652-660. (Intervento presentato al convegno 30th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2011 tenutosi a Orlando, FL nel October 23-27, 2011).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/52685
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