TY - GEN
T1 - PBF-LB And DED Processing Of A Ni-Based Superalloy
AU - Thomas, M.
AU - Charkaluk, E.
AU - Solas, D.
AU - Szmytka, F.
AU - Locq, D.
AU - Morel, A.
AU - Hubert, O.
AU - Muller, N.
AU - Tournier, C.
N1 - Publisher Copyright:
© European Powder Metallurgy Association (EPMA)
PY - 2022/1/1
Y1 - 2022/1/1
N2 - Different additive manufacturing (AM) technologies such as PBF-LB and DED do become attractive for both repair and 3D part manufacturing. In particular, extensive work is in progress for the non-weldable nickel-based superalloys which tend to exhibit cracks due to residual stresses build-up during AM thermal cycles. Within the framework of the project “Fabrication Additive Paris-Saclay” (FAPS) conducted at Université Paris-Saclay, the present investigation will highlight the processing conditions and build-up strategy that produce crack-free specimens for alloy AD730®. The latter was developed by Aubert & Duval for cast & wrought gas turbine applications. In this work, a comparison between such conventional processing and AM will be provided in terms of mechanical performance. The results clearly show an anisotropic behaviour related to the sharp crystallographic texture induced by the epitaxial grain growth. The results will be discussed, with a perspective analysis of maturity for this AM processed-material, the process robustness, the potential technological developments and application prospects.
AB - Different additive manufacturing (AM) technologies such as PBF-LB and DED do become attractive for both repair and 3D part manufacturing. In particular, extensive work is in progress for the non-weldable nickel-based superalloys which tend to exhibit cracks due to residual stresses build-up during AM thermal cycles. Within the framework of the project “Fabrication Additive Paris-Saclay” (FAPS) conducted at Université Paris-Saclay, the present investigation will highlight the processing conditions and build-up strategy that produce crack-free specimens for alloy AD730®. The latter was developed by Aubert & Duval for cast & wrought gas turbine applications. In this work, a comparison between such conventional processing and AM will be provided in terms of mechanical performance. The results clearly show an anisotropic behaviour related to the sharp crystallographic texture induced by the epitaxial grain growth. The results will be discussed, with a perspective analysis of maturity for this AM processed-material, the process robustness, the potential technological developments and application prospects.
M3 - Conference contribution
AN - SCOPUS:85160690035
T3 - World PM 2022 Congress Proceedings
BT - World PM 2022 Congress Proceedings
PB - European Powder Metallurgy Association (EPMA)
T2 - World PM 2022 Congress and Exhibition
Y2 - 9 October 2022 through 13 October 2022
ER -