Detail publikace

CYCLIC LOW-THERMAL AGING OF DISSIMILAR AUSTENITIC STEEL WELDS USED IN NUCLEAR POWER PLANTS

MIKMEKOVÁ, Š. AMBROŽ, O. MRŇA, L. HRÁČEK, J. ŠEBESTOVÁ, H.

Originální název

CYCLIC LOW-THERMAL AGING OF DISSIMILAR AUSTENITIC STEEL WELDS USED IN NUCLEAR POWER PLANTS

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The nuclear power plants in Eastern Europe face problems with supplies of spare parts manufactured according to the same Russian standards as the originals. Therefore, the dissimilar welds of original Russian steel 08Ch18N10T and substitutive 1.4541 were made and analyzed to consider the possibility of original steel replacement during the repairs. Two different filler wires were applied. The welds were subjected to cyclic thermal loading corresponding to the actual operating conditions of a nuclear unit, and their microstructure and mechanical properties were compared to the as-welded joints. An increase in weld metal microhardness induced by aging was found when the filler with higher C and Cr content was used. Although this could indicate possible ferrite decomposition, the detected changes in mechanical properties corresponded to the changes in homogeneous welds of the original steel. The strength requirements for the steel used in nuclear power plant devices were still matched.

Klíčová slova

dissimilar weld; austenitic steel; thermal aging; replacement; microstructure; mechanical properties; nuclear power plant

Autoři

MIKMEKOVÁ, Š.; AMBROŽ, O.; MRŇA, L.; HRÁČEK, J.; ŠEBESTOVÁ, H.

Vydáno

13. 12. 2024

Nakladatel

MM SCIENCE

Místo

PRAGUE 10

ISSN

1803-1269

Periodikum

MM Science Journal

Ročník

2024

Číslo

12

Stát

Česká republika

Strany od

7868

Strany do

7874

Strany počet

7

URL

https://www.mmscience.eu/journal/issues/december-2024/articles

BibTex

@article{BUT197247,
  author="MIKMEKOVÁ, Š. and AMBROŽ, O. and MRŇA, L. and HRÁČEK, J. and ŠEBESTOVÁ, H.",
  title="CYCLIC LOW-THERMAL AGING OF DISSIMILAR AUSTENITIC STEEL WELDS USED IN NUCLEAR POWER PLANTS",
  journal="MM Science Journal",
  year="2024",
  volume="2024",
  number="12",
  pages="7868--7874",
  doi="10.17973/MMSJ.2024\{_}12\{_}2024046",
  issn="1803-1269",
  url="https://www.mmscience.eu/journal/issues/december-2024/articles"
}