PSI - Issue 14

Anigani Sudarshan Reddy et al. / Procedia Structural Integrity 14 (2019) 449–466 Author name / Structural Integrity Procedia 00 (2018) 000–000

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properties of small scale test specimens of hybrid (DMLS SS316L on X20Cr13) are also in close conformance with regular specimens as per ASTM E8/E8M and the failure happened in the softer DMLS SS316L location. The hybrid interface between the DMLS SS316L and X20Cr13 is intact. In the welded hybrid, the failure takes place in the softer Cast FSX414 with the hybrid joint remaining intact. This study successfully demonstrates the feasibility of using small scale testing as a viable test method for laser additive manufacturing. Acknowledgements INTECH DMLS Pvt. Ltd., management and production team is acknowledged for all the monolithic DMLS samples and the hybrid SS316L samples. The hybrid samples were obtained from GE, Bangalore, during the tenure of the authors in GE Power, Bangalore, as part of the M.Tech thesis of Mr. Kaustudh Krishna Bawane, Manoj kumar Chimmat and Anigani Sudarshan Reddy. Mr. S. Sashidhara, Materials engineering department, Indian Institute of Science is greatfully acknowledged for his untiring help in enabling all the small scale testing of these samples. Ms. Pooja Srinivas and Mr. Nidhish Sagar, etc. are thanked for their help with the SEM Fractography. References Cooper, D.E., Stanford, M., Kibble, K.A., Gibbons, G.J., 2012. “Additive manufacturing for product improvement Red Bull Technology”, Materials and Design, Volume 149, Pages 194-201. Eleonora Atzeni., Alessandro Salmi., 2012. “Economics of additive manufacturing for end-usable metal parts”, International Journal Advanced Manufacturing 62, pp.1147-1155. Erwin Rauch., Marco Unterhofer., Patrick Dallasega., 2018. “Industry sector analysis for the application of additive manufacturing in smart and distributed manufacturing systems”, Manufacturing Letters, 15, pp. 126-131. 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