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Melt pool morphology in directed energy deposition additive manufacturing process

DOI: 10.1088/1757-899X/861/1/012012 DOI Help

Authors: Y. Chen (University College London; Research Complex at Harwell) , S. Clark (University College London; Research Complex at Harwell) , A. C. L. Leung (University College London; Research Complex at Harwell) , L. Sinclair (University College London; Research Complex at Harwell) , S. Marussi (University College London; Research Complex at Harwell) , R. Atwood (Diamond Light Source) , T. Connolley (Diamond Light Source) , M. Jones (University of Sheffield; Rolls-Royce plc) , G. Baxter (University of Sheffield) , Peter Lee (University College London; Research Complex at Harwell)
Co-authored by industrial partner: Yes

Type: Conference Paper
Conference: MCWASP XV 2020
Peer Reviewed: Yes

State: Published (Approved)
Published: May 2020
Diamond Proposal Number(s): 20096

Open Access Open Access

Abstract: Directed Energy Deposition Additive Manufacturing (DED-AM) is one of the principal AM techniques being explored for both the repair of high value components in the aerospace industry as well as freeform fabrication of large metallic components. However, the lack of fundamental understanding of the underlying process-structure-property relationships hinders the utilisation of DED-AM for the production or repair of safety-critical components. This study uses in situ and operando synchrotron X-ray imaging to provide an improved fundamental understanding of laser-matter interactions and their influence on the melt pool geometry. Coupled with process modelling, these unique observations illustrate how process parameters can influence the DED-AM melt pool geometry. The calibrated simulation can be used for guidance in an industrial additive manufacturing process for microstructure and quality control.

Subject Areas: Materials, Engineering


Instruments: I12-JEEP: Joint Engineering, Environmental and Processing

Other Facilities: Research Complex at Harwell

Documents:
Chen_2020_IOP_Conf._Ser.%3A_Mater._Sci._Eng._861_012012.pdf