PSI - Issue 28

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com Sci c ir ct Structural Integrity Procedia 00 (2019) 000–000

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ScienceDirect

Procedia Structural Integrity 28 (2020) 1039–1046

© 2020 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 European Structural Integrity Society (ESIS) ExCo Abstract This study deals with the mechanical characterization of materials resulting from Markforged Atomic Diffusion Additive Manufacturing (ADAM) process. 17-4PH stainless steel fabricated by ADAM was investigated by exploring the microstructure generated by this manufacturing process, then analysing the effect of the microstructure on the deformation of such materials. Single Edge Notch Tensile (SENT) 17-4PH samples were fabricated in order to highlight microstructure effects in in-situ tensile tests. Then, a microscale experimental method coupled with digital images correlation (DIC) was used to measure kinematic fields of the sample surface. The effect of the deposited layer thickness on the material deformation was investigated by testing two samples fabricated with the same printing parameters except the layer thickness (i.e., 50 µm and 125 µm filament diameter). The results show that the layer thickness is an important printing parameter for such process since it affects the measured kinematic fields. © 2020 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 European Structural Integrity Society (ESIS) ExCo Keywords: Metal additive manufacturing, 17-4PH, DIC measurment, mesostructure effect. ) ohamed Ali Bouaziz a,* , Joseph arae jouda a,b , Julien auff ann a , François ild b a ERMESS, EPF-Engineering school, Sceaux, France b Université Paris-Saclay, ENS Paris-Saclay, CNRS, LMT - Laboratoire de Mécanique et Technologie, Gif-sur-Yvette, France Abstract This study deals with the mechanical characterization of materials resulting from arkforged Atomic Diffusion Additive anufacturing (ADA ) process. 17-4PH stainless steel fabricated by ADA was investigated by exploring the microstructure generated by this manufacturing process, then analysing the effect of the microstructure on the deformation of such materials. Single Edge Notch Tensile (SENT) 17-4PH samples were fabricated in order to highlight microstructure effects in in-situ tensile tests. Then, a microscale experimental method coupled with digital images correlation (DIC) was used to measure kinematic fields of the sample surface. The effect of the deposited layer thickness on the material deformation was investigated by testing two samples fabricated with the same printing parameters except the layer thickness (i.e., 50 µm and 125 µm filament diameter). The results show that the layer thickness is an important printing parameter for such process since it affects the measured kinematic fields. © 2020 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 European Structural Integrity Society (ESIS) ExCo Keywords: Metal additive manufacturing, 17-4PH, DIC measurment, mesostructure effect. 1st Virtual European Conference on Fracture Microscale mechanical characterization of 17-4PH stainless steel fabricated by Atomic Diffusion Additive Manufacturing (ADAM) Mohamed Ali Bouaziz a,* , Joseph Marae Djouda a,b , Julien Kauffmann a , François Hild b a ERMESS, EPF-Engineering school, Sceaux, France b Université Paris-Saclay, ENS Paris-Saclay, CNRS, LMT - Laboratoire de Mécanique et Technologie, Gif-sur-Yvette, France 1st irtual European onference on Fracture icr scale ec a ical c aracterizati f - stai less steel fa ricate t ic iff si iti e a fact ri (

* Corresponding author. Tel.: +33760039884. E-mail address: mohamed.bouaziz@epf.fr * Corresponding author. Tel.: +33760039884. E-mail address: mohamed.bouaziz@epf.fr

2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo 2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo

2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.11.119