TY - JOUR
T1 - Additive Manufacturing of Nickel-Base Superalloy IN100 Through Scanning Laser Epitaxy
AU - Basak, Amrita
AU - Das, Suman
N1 - Funding Information:
This work was sponsored by the Office of Naval Research through Grant N00014-11-1-0670 as part of the Cyber-Enabled Manufacturing Systems (CeMS) program.
Publisher Copyright:
© 2017, The Minerals, Metals & Materials Society.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Scanning laser epitaxy (SLE) is a laser powder bed fusion (LPBF)-based additive manufacturing process that uses a high-power laser to consolidate metal powders facilitating the fabrication of three-dimensional objects. In the present study, SLE is used to produce samples of IN100, a high-γ′ non-weldable nickel-base superalloy on similar chemistry substrates. A thorough analysis is performed using various advanced material characterization techniques such as high-resolution optical microscopy, scanning electron microscopy, energy dispersive x-ray spectroscopy, and Vickers microhardness measurements to characterize and compare the quality of the SLE-fabricated IN100 deposits with the investment cast IN100 substrates. The results show that the IN100 deposits have a finer γ/γ′ microstructure, weaker elemental segregation, and higher microhardness compared with the substrate. Through this study, it is demonstrated that the SLE process has tremendous potential in the repair and manufacture of gas turbine hot-section components.
AB - Scanning laser epitaxy (SLE) is a laser powder bed fusion (LPBF)-based additive manufacturing process that uses a high-power laser to consolidate metal powders facilitating the fabrication of three-dimensional objects. In the present study, SLE is used to produce samples of IN100, a high-γ′ non-weldable nickel-base superalloy on similar chemistry substrates. A thorough analysis is performed using various advanced material characterization techniques such as high-resolution optical microscopy, scanning electron microscopy, energy dispersive x-ray spectroscopy, and Vickers microhardness measurements to characterize and compare the quality of the SLE-fabricated IN100 deposits with the investment cast IN100 substrates. The results show that the IN100 deposits have a finer γ/γ′ microstructure, weaker elemental segregation, and higher microhardness compared with the substrate. Through this study, it is demonstrated that the SLE process has tremendous potential in the repair and manufacture of gas turbine hot-section components.
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U2 - 10.1007/s11837-017-2638-6
DO - 10.1007/s11837-017-2638-6
M3 - Article
AN - SCOPUS:85034259538
SN - 1047-4838
VL - 70
SP - 53
EP - 59
JO - JOM
JF - JOM
IS - 1
ER -