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Journal of Nuclear Engineering, Volume 2, Issue 3

2021 September - 5 articles

Cover Story: Electron beam welding was selected for the welding of reduced activation ferritic/martensitic (RAFM) steels. Those with and without pre- and post-heat treatment by electron beams are studied by finite element simulation and trials. The experimental results are consistent with the simulation. In the case of similar deformation, the residual stress (RS) after electron beam heat treatment is far less than that without heat treatment. Without heat treatment, the RS near the weld is more than 400 MPa, while after heat treatment it is about 350 MPa. As the reduction of RS is essential to prevent the occurrence of cracks and other defects after welding, pre- and post-heat treatment by the electron beam is deemed as an effective way to improve the welding quality in RAFM steel welding. View this paper
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Articles (5)

  • Article
  • Open Access
11 Citations
3,501 Views
28 Pages

24 August 2021

This work extends the investigation of higher-order sensitivity and uncertainty analysis from 3rd-order to 4th-order for a polyethylene-reflected plutonium (PERP) OECD/NEA reactor physics benchmark. Specifically, by applying the 4th-order comprehensi...

  • Article
  • Open Access
3 Citations
3,344 Views
9 Pages

24 August 2021

With the resurgence of interest in molten salt reactors, there is a need for new experiments and modeling capabilities to characterize the unique phenomena present in this fluid fuel system. A Versatile Experimental Salt Irradiation Loop (VESIL) is c...

  • Review
  • Open Access
13 Citations
8,299 Views
35 Pages

7 August 2021

The non-intrusive screening of shipping containers at national borders serves as a prominent and vital component in deterring and detecting the illicit transportation of radioactive and/or nuclear materials which could be used for malicious and highl...

  • Article
  • Open Access
1 Citations
2,877 Views
7 Pages

31 July 2021

In this paper, we present an arbitrary-order discontinuous Galerkin finite element discretization of the SN transport equation on 3D extruded polygonal prisms. Basis functions are formed by the tensor product of 2D polygonal Bernstein–Bézier function...

  • Article
  • Open Access
1 Citations
4,921 Views
14 Pages

Effect of Pre-Heating and Post-Heating on Electron Beam Welding of Reduced Activation Ferrite/Martensite Steel

  • Yong Zhang,
  • Jiefeng Wu,
  • Zhihong Liu,
  • Songlin Liu,
  • Mingzhun Lei,
  • Muhammad Atif,
  • Zhenfei Liu and
  • Jianguo Ma

23 June 2021

Reduced activation ferritic/martensitic (RAFM) steels are considered the main candidate material for the water-cooled ceramic breeder (WCCB) in a fusion reactor. High-energy density welding approaches, such as electron beam welding (EBW) and laser be...

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J. Nucl. Eng. - ISSN 2673-4362