TY - JOUR
T1 - Cavitation Erosion of Ni-Based Superalloys Manufactured by Forging and Additive Manufacturing
AU - Taillon, Gabriel
AU - Miyagawa, Kazuyoshi
N1 - Funding Information:
The authors would like to thank the Waseda Research Institute for Science and Engineering (WISE) for providing support to the presented research, in context of the project: “High performance and high reliability research for hydraulic turbomachinery systems”. The authors would like to thank the contribution of Mitsubishi Heavy Industries (MHI). We wish specifically thank Mr. Tatsuya Kimura and Mr. Yoshinori Sakurai. The authors would like to thank the contribution of the Japan Aerospace Exploration Agency (JAXA) to this project. We wish specifically thank Mr. Hideo Kawashima.
Publisher Copyright:
© 2021, ASM International.
PY - 2021/10
Y1 - 2021/10
N2 - Inconel pipes that transport cryogenic fluids in rocket engines manufactured by additive manufacturing (AM) were eroded by cavitation. The AM method selective laser melting (SLM) was used to manufacture at lower cost, but had seemingly lower erosion resistance. The cavitation erosion properties of Inconel 625 and 718 are studied as a function of hardness and surface roughness with the ASTM G134 cavitating jet. The samples were studied 3 surface conditions, as deposited/as used in applications, machined and polished, for both forged and AM manufacturing. Indentation reveals slight surface hardening for machined samples. X-ray diffraction (XRD) shows similar polycrystalline γ-Ni-based microstructure for all samples. Scanning electron microscopy (SEM) images of the cut cross-sections reveal the fractures and pits, as well as some porosity in the case of SLM samples. Images of the surfaces during erosion reveal some fracture mechanisms: machined samples erosion start quickly on pits and scratches. The SLM718 samples were found to have good cavitation erosion resistance if machined, while the SLM625 samples have comparatively poorer resistance. As-deposited samples have the lowest resistance, and surprisingly machined samples are more resistant than polished.
AB - Inconel pipes that transport cryogenic fluids in rocket engines manufactured by additive manufacturing (AM) were eroded by cavitation. The AM method selective laser melting (SLM) was used to manufacture at lower cost, but had seemingly lower erosion resistance. The cavitation erosion properties of Inconel 625 and 718 are studied as a function of hardness and surface roughness with the ASTM G134 cavitating jet. The samples were studied 3 surface conditions, as deposited/as used in applications, machined and polished, for both forged and AM manufacturing. Indentation reveals slight surface hardening for machined samples. X-ray diffraction (XRD) shows similar polycrystalline γ-Ni-based microstructure for all samples. Scanning electron microscopy (SEM) images of the cut cross-sections reveal the fractures and pits, as well as some porosity in the case of SLM samples. Images of the surfaces during erosion reveal some fracture mechanisms: machined samples erosion start quickly on pits and scratches. The SLM718 samples were found to have good cavitation erosion resistance if machined, while the SLM625 samples have comparatively poorer resistance. As-deposited samples have the lowest resistance, and surprisingly machined samples are more resistant than polished.
KW - 3D printing
KW - Additive manufacturing
KW - Cavitation erosion
KW - Inconel
KW - Nickel-based
KW - Superalloy
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U2 - 10.1007/s11668-021-01241-4
DO - 10.1007/s11668-021-01241-4
M3 - Article
AN - SCOPUS:85116488627
SN - 1547-7029
VL - 21
SP - 1902
EP - 1917
JO - Journal of Failure Analysis and Prevention
JF - Journal of Failure Analysis and Prevention
IS - 5
ER -