TY - GEN
T1 - Residual Stress, Microstructure, and Characterization of Self-Mated Additive Repair of Inconel 718 Alloy Using Cold Spray Process
AU - Sundaram, Hariharan
AU - Raghupatruni, Prasad
N1 - Funding Information:
This analysis and research work were performed with the support from GE Aviation, GE Gas Power, Repair Development Center (RDC), and Material Processes Engineering (MPE), USA. We acknowledge Impact Innovations GmbH for the cold spray coating coupons. Repair Engineering Team Members Joseph Bamonte, Warren Grossklaus, Timothy Rasch, Michael Schulte, and Chris Lambert are gratefully acknowledged for supporting and funding this work. Dr. Ramar Amuthan, Shivanandappa Meti, Lakshmikanth S., and Praveen R., are thanked for their help with the analysis work, laboratory support, and mechanical tests. The authors would like to thank GE India Industrial Private Limited, GEKTC Kuwait, and GE Gas Power Engineering for the support in presenting this work.
Publisher Copyright:
© 2022, The Minerals, Metals & Materials Society.
PY - 2022
Y1 - 2022
N2 - Inconel 718 was deposited via cold spray process onto Inconel 718 grade base material as a possible alternative repair solution of the hardware after service. A detailed characterization of the thick (~2 mm) coating was carried out, for analyzing the coating porosity, residual stress, and mechanical properties including tensile bond adhesion strength and microstructure (phase stability), in the as sprayed condition. Interfacial chemistry, the coating relaxation behavior, and thermal stability of the cold sprayed coating were studied after heat treatment at relevant temperatures. Detailed metallurgical characterization of the coating, interdiffusion characteristics with the substrate and residual stress measurements, enabled understanding of near net repair of the part as a possible alternative for conventional repair processes known. The overall analysis indicated the coating to be well suited for self-mated near net shape repair application for turbo-machinery components and indicated heat treatment improvements can lead to better mechanical properties in these systems.
AB - Inconel 718 was deposited via cold spray process onto Inconel 718 grade base material as a possible alternative repair solution of the hardware after service. A detailed characterization of the thick (~2 mm) coating was carried out, for analyzing the coating porosity, residual stress, and mechanical properties including tensile bond adhesion strength and microstructure (phase stability), in the as sprayed condition. Interfacial chemistry, the coating relaxation behavior, and thermal stability of the cold sprayed coating were studied after heat treatment at relevant temperatures. Detailed metallurgical characterization of the coating, interdiffusion characteristics with the substrate and residual stress measurements, enabled understanding of near net repair of the part as a possible alternative for conventional repair processes known. The overall analysis indicated the coating to be well suited for self-mated near net shape repair application for turbo-machinery components and indicated heat treatment improvements can lead to better mechanical properties in these systems.
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U2 - 10.1007/978-3-030-92381-5_20
DO - 10.1007/978-3-030-92381-5_20
M3 - Conference contribution
AN - SCOPUS:85125285859
SN - 9783030923808
T3 - Minerals, Metals and Materials Series
SP - 225
EP - 237
BT - TMS 2022 151st Annual Meeting and Exhibition Supplemental Proceedings
PB - Springer Science and Business Media Deutschland GmbH
T2 - 151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022
Y2 - 27 February 2022 through 3 March 2022
ER -