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- Title
Additive Manufacturing of Nickel-Base Superalloy IN100 Through Scanning Laser Epitaxy.
- Authors
Basak, Amrita; Das, Suman
- Abstract
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.
- Subjects
THREE-dimensional printing; NICKEL alloys; HEAT resistant alloys; EPITAXY; SCANNING electron microscopy; ENERGY dispersive X-ray spectroscopy
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2018, Vol 70, Issue 1, p53
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-017-2638-6