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A process model for the heat-affected zone microstructure evolution in duplex stainless steel weldments: Part II. Application to electron beam welding

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Abstract

In the present investigation, a process model for electron beam (EB) welding of different grades of duplex stainless steels (i.e. SAF 2205 and 2507) has been developed. A number of attractive features are built into the original finite element code, including (1) a separate module for prediction of the penetration depth and distribution of the heat source into the plate, (2) adaptive refinement of the three-dimensional (3-D) element mesh for quick and reliable solution of the differential heat flow equation, and (3) special subroutines for calculation of the heat-affected zone (HAZ) microstructure evolution. The process model has been validated by comparison with experimental data obtained from in situ thermocouple measurements and optical microscope examinations. Subsequently, its aptness to alloy design and optimization of welding conditions for duplex stainless steels is illustrated in different numerical examples and case studies pertaining to EB welding of tubular joints.

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Authors and Affiliations

  1. Institute of Energy Technology, N-2027, Kjeller, Norway

    H. Hemmer (Section Head) & S. Klokkehaug (Researcher)

  2. Department of Materials Technology and Electrochemistry, Norwegian University of Science and Technology, N-7491, Trondheim, Norway

    Ø. Grong (Professor)

Authors
  1. H. Hemmer
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  2. Ø. Grong
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  3. S. Klokkehaug
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Hemmer, H., Grong, Ø. & Klokkehaug, S. A process model for the heat-affected zone microstructure evolution in duplex stainless steel weldments: Part II. Application to electron beam welding. Metall Mater Trans A 31, 1035–1048 (2000). https://doi.org/10.1007/s11661-000-1021-2

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  • DOI: https://doi.org/10.1007/s11661-000-1021-2

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