Additive manufacturing of ITER first wall panel parts by two approaches: Selective laser melting and electron beam melting

Yuan Zhong, Lars Erik Rännar, Stefan Wikman, Andrey Koptyug, Leifeng Liu, Daqing Cui, Zhijian Shen

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Fabrication of ITER First Wall (FW) Panel parts by two additive manufacturing (AM) technologies, selective laser melting (SLM) and electron beam melting (EBM), was supported by Fusion for Energy (F4E). For the first time, AM is applied to manufacture ITER In-Vessel parts with complex design. Fully dense SS316L was prepared by both SLM and EBM after developing optimized laser/electron beam parameters. Characterizations on the density, magnetic permeability, microstructure, defects and inclusions were carried out. Tensile properties, Charpy-impact properties and fatigue properties of SLM and EBM SS316L were also compared. ITER FW Panel parts were successfully fabricated by both SLM and EBM in a one-step building process. The SLM part has smoother surface, better size accuracy while the EBM part takes much less time to build. Issues with removing support structures might be solved by slightly changing the design of the internal cooling system. Further investigation of the influence of neutron irradiation on materials properties between the two AM technologies is needed.

Original languageEnglish
Pages (from-to)24-33
Number of pages10
JournalFusion Engineering and Design
Volume116
DOIs
Publication statusPublished - 1 Mar 2017
Externally publishedYes

Keywords

  • 316L stainless steel
  • Additive manufacturing
  • Electron beam melting
  • First wall
  • ITER
  • Selective laser melting

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

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