Microstructure and mechanical behavior of a CO2 laser and TIG welded 904L steel

Authors

  • Barbara Nasiłowska Military University of Technology, Faculty of Mechanical Engineering
  • Zdzisław Bogdanowicz Military University of Technology, Faculty of Mechanical Engineering
  • Paweł Jóźwik Military University of Technology, Faculty of Advanced Technology and Chemistry

DOI:

https://doi.org/10.7494/mafe.2014.40.2.69

Keywords:

steel 904L, welding TIG, laser

Abstract

The paper presents the analysis of structural research, micro-hardness and mechanical properties of the base material which is steel 904 L and joints made with CO2 laser beam and TIG method. The analysis of the equilibrium system created in the Thermo-Calc programme based on chemical composition shows a dominancy of austenite with of Feα additions, phase σ, P and Laves' and M23C6 and Cr9Mo21Ni20 carbides. EBSD (Electron backscatter diffraction) research done by using electron scanning microscope confirmed the presence of pure austenite.

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Author Biographies

  • Barbara Nasiłowska, Military University of Technology, Faculty of Mechanical Engineering
    M. Sc. Eng.
  • Zdzisław Bogdanowicz, Military University of Technology, Faculty of Mechanical Engineering
    Ph. D. Eng.
  • Paweł Jóźwik, Military University of Technology, Faculty of Advanced Technology and Chemistry
    Ph. D.  Eng.

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Published

2014-11-18

Issue

Vol. 40 No. 2 (2014)

Section

Articles

How to Cite

Microstructure and mechanical behavior of a CO2 laser and TIG welded 904L steel. (2014). Metallurgy and Foundry Engineering, 40(2), 69. https://doi.org/10.7494/mafe.2014.40.2.69

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