Abstract
This article describes additive manufacturing (AM) of IN100, a high gamma-prime nickel-based superalloy, through scanning laser epitaxy (SLE), aimed at the creation of thick deposits onto like-chemistry substrates for enabling repair of turbine engine hot-section components. SLE is a metal powder bed-based laser AM technology developed for nickel-base superalloys with equiaxed, directionally solidified, and single-crystal microstructural morphologies. Here, we combine process modeling, statistical design-of-experiments (DoE), and microstructural characterization to demonstrate fully metallurgically bonded, crack-free and dense deposits exceeding 1000 μm of SLE-processed IN100 powder onto IN100 cast substrates produced in a single pass. A combined thermal-fluid flow-solidification model of the SLE process compliments DoE-based process development. A customized quantitative metallography technique analyzes digital cross-sectional micrographs and extracts various microstructural parameters, enabling process model validation and process parameter optimization. Microindentation measurements show an increase in the hardness by 10 pct in the deposit region compared to the cast substrate due to microstructural refinement. The results illustrate one of the very few successes reported for the crack-free deposition of IN100, a notoriously “non-weldable” hot-section alloy, thus establishing the potential of SLE as an AM method suitable for hot-section component repair and for future new-make components in high gamma-prime containing crack-prone nickel-based superalloys.
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References
S.J. Balsone: The Gas Turbine Handbook, US Department, Office of Fossil Energy, 2004, pp. 411–19.
Sv Takeuchi and E Kuramoto: Acta Metallurgica 1973, vol. 21, pp. 415–25.
MH Yoo: Scripta Metall. 1986, vol. 20, pp. 915–20.
O. Hunziker, D. Dye, S.M. Roberts, R.C. Reed: In Mathematical Modelling of Weld Phenomena 5, (IOM Communications: London, 2001), pp 299-320.
MB Henderson, D Arrell, R Larsson, M Heobel and G Marchant: Science and Technology of Welding & Joining 2004, vol. 9, pp. 13-21.
YM Yaman and MC Kuşhan: Journal of materials science letters 1998, vol. 17, pp. 1231–34.
G Çam and M Koçak: International Materials Reviews 1998, vol. 43, pp. 1-44.
M.T. Rush, P.A. Colegrove, Z. Zhang and D. Broad: Journal of materials processing technology 2012, vol. 212, pp. 188–97.
Yulai Xu, Lei Zhang, Jun Li, Xueshan Xiao, Xiuli Cao, Guoqing Jia and Zhi Shen: Materials Science and Engineering: A 2012, vol. 544, pp. 48-53.
A. Gregori: TWI Report, 2003, pp 1–32.
M.H. Haafkens and J.H.G. Matthey: Weld. J. (Miami), 1982, 61:25–30.
B Geddes, H Leon, X Huang: Superalloys: Alloying and Performance. ASM International, Metals Park, OH, 2010.
WA Owczarski, DS Duvall and CP Sullivan: Weld J 1966, vol. 45, p. 145–55.
W. Hofmeister, M. Wert, J. Smugeresky, J.A. Philliber, M. Griffith and M. Ensz: JOM 1999, vol. 51, pp. 1-6.
Gary K Lewis and Eric Schlienger: Materials & Design 2000, vol. 21, pp. 417–23.
M. Gäumann: PhD Thesis, EPFL Lausanne, Lausanne, 1999.
S. Das, T. Fuesting, L. Brown, N. Harlan, G. Lee, J. J. Beaman, D. L. Bourell, J. W. Barlow, and K. Sargent: Materials and Manufacturing Processes 1998, Vol. 13, pp. 241–61.
S. Das: PhD Thesis, University of Texas at Austin, Austin 1998.
S. Das, T. Fuesting, G. Danyo, J. J. Beaman and D. L. Bourell, Materials and Design 2000, Vol. 21, pp. 63-73.
J.A. Ramos, J. Murphy, K. Lappo, K. Wood, D.L. Bourell, and J.J. Beaman: Proceedings of 13th Solid Freeform Fabrication Symposium, Austin, TX, 2002, pp. 211–23.
LE Murr, E Martinez, XM Pan, SM Gaytan, JA Castro, CA Terrazas, F Medina, RB Wicker and DH Abbott: Acta Materialia 2013, vol. 61, pp. 4289–96.
Guijun Bi, Chen-Nan Sun, Hui-chi Chen, Fern Lan Ng and Cho Cho Khin Ma: Materials & Design 2014, vol. 60, pp. 401–08.
Ranadip Acharya, Rohan Bansal, Justin J Gambone and Suman Das: Metallurgical and Materials Transactions B 2014, vol. 45A, pp. 2247–61.
Ranadip Acharya, Rohan Bansal, Justin J Gambone and Suman Das: Metallurgical and Materials Transactions B 2014, vol. 45, pp. 2279-2290.
RH Myers, DC Montgomery, CM Anderson-Cook: Response Surface Methodology: Process and Product Optimization Using Designed Experiments. Wiley, New York, 2009.
Allan Ghaemi: Applied optics 1996, vol. 35, pp. 2211-2215.
R. Bansal: PhD Thesis, Georgia University of Technology, Atlanta, 2013.
J.J. Gambone: M.S. Thesis, Georgia University of Technology, Atlanta, 2012.
I. Hamill: Implementation of a Solidification Model in CFX-5, CFX Ltd., Oxfordshire, U.K., 2003.
M Zieliñska, M Yavorska, M Porêba and J Sieniawski: Arch. Mater. Sci. 2010, vol. 36, pp. 35–38.
Stephen J. Donachie Matthew J. Donachie: Superalloys, A Technical Guide. (ASM International, Metals Park, OH, 2003), p. 246.
Ys Lee, M Nordin, SS Babu and DF Farson: Welding Journal 2014, vol. 93, pp. 292–300.
J. Xie, A. Kar, J. A. Rothenflue and W. P. Latham: Journal of Laser Applications 1997, vol. 9, pp. 77-85.
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This work is sponsored by the Office of Naval Research through grants N00173-07-1-G031, N00014-10-1-0526, N00014-11-1-0670, and N00014-14-1-0658.
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Manuscript submitted December 31, 2014.
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Acharya, R., Das, S. Additive Manufacturing of IN100 Superalloy Through Scanning Laser Epitaxy for Turbine Engine Hot-Section Component Repair: Process Development, Modeling, Microstructural Characterization, and Process Control. Metall Mater Trans A 46, 3864–3875 (2015). https://doi.org/10.1007/s11661-015-2912-6
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DOI: https://doi.org/10.1007/s11661-015-2912-6