Search results for: SIGMA PRECIPITATION

• The influence of stainless steels microstructure evolution on the mechanical properties of pressure installation elements

  Publication

  • M. Jaskólski
  • A. Kaczmarek-Kacprzak

  - Year 2013

  In this paper results of FEM analysis performed for pipe and 90o elbow, made of super duplex stainless steel, after precipitation of sigma phase (s), were presented. Heat treatment conditions simulate accidental overheating that can occur in nuclear installations after cooling circulation fails. For initial and modified microstructure tensile test was performed and numerical description of work hardening curves was done. Verification...

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• The influence of stainless steels microstructure evolution on the mechanical properties of pressure installation elements

  Publication

  • P. Szabracki
  • M. Jaskólski
  • T. Lipiński
  • A. Kaczmarek-Kacprzak

  - Year 2013

  In this paper results of FEM analysis performed for pipe and 90o elbow, made of super duplex stainless steel, after precipitation of sigma phase (),were presented. Heat treatment conditions simulate accidental overheating that can occur in nuclear installations after cooling circulation fails. For initial and modified microstructure tensile test was performed and numerical description of work hardening curves was done. Verification...

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• The FEM analysis of pressure installation elements after simulated accidental overheating

  Publication

  • P. Szabracki
  • M. Jaskólski
  • T. Lipiński
  • A. Kaczmarek-Kacprzak

  - Year 2014

  The paper presents innovative analysis focused on the safety aspects of existing pressure installation operation after overheating accidents. Results presented here can be applied in decision-making process concerning further operation of existing pressure installation after cooling system failure. In this paper the results of FEM analysis performed for a straight pipe and 90 degrees elbow, made of super duplex stainless steel,...

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• Magneto-mechanical properties evolution of Fe-C alloy during precipitation process.

  Publication

  • B. Augustyniak

  - Year 2004

  Zbadano pętlę histerezy magnetycznej oraz natężenia mechanicznego i polowego efektu Barkhausena w stopie Fe-C w funkcji czasu wygrzewania izotermicznego w temperaturze 473 K. Wyznaczono rozkłady poziomu naprężeń wewnętrznych oraz straty energii na procesy histerezowe. Wykazano, iż pole koercji Hc jest paraboliczną funkcją średniego poziomu naprężeń sigma-i.