PSI - Issue 47

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 47 (2023) 535–544

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons A first attempt to produce Inconel 718-High Carbon Steel bi-metallic parts via FDMS with the aim to evaluate metallurgical features, relative density, part shrinkage, and interdiffusion mechanism at the interface between the two metals, is described. Different deposition patterns were evaluated while keeping the same debinding and sintering heat treatment. Despite sintering parameters were non optimized to reach a good densification, a good interdiffusion bonding between Inconel 718 and carbon steel was reached. The work highlighted the main issues to be faced in order to reach sound 3D printed bi-metallic parts. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons Keywords: Fused Deposition Modeling and Sintering; Inconel 718; High carbon Steel; bi-metallic parts; Microstructure Abstract Bi-metallic materials allow to obtain new performances that are quite impossible to reach with ‘mono-materials’. When producing bi-metallic parts, variables to consider are, among the others, compatibility between the two alloys, their configuration and production technology. Fused Deposition Modeling and Sintering (FDMS) is a promising additive technology that is particularly suitable to produce such kind of components by using two metal/polymer composite filaments at the same time. 27th International Conference on Fracture and Structural Integrity (IGF27) Creating IN718-High Carbon Steel bi-metallic parts by Fused Deposition Modeling and Sintering P. Ferro a *, A. Fabrizi a , H.S.A. Elsayed b , F. Berto c , G. Savio d a Department of Engineering and Management, University of Padova, Vicenza, 36100 Italy b Department of Industrial Engineering, University of Padova, Padova, 35131 Italy c Department of Chemical Engineering Materials Environmen, University of Rome, Sapienza, Rome, 00184 Italy d Department of Civil, Environmental and Architectural Engineering, University of Padova, Padova, 35131 Italy

* Corresponding author. E-mail address: paolo.ferro@unipd.it

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons 10.1016/j.prostr.2023.07.071