Publication result detail

Structural stability of dissimilar weld joints of steel P91

FORET, R., MILLION, B., SVOBODA, M., STRÁNSKÝ, K.

Original Title

Structural stability of dissimilar weld joints of steel P91

English Title

Structural stability of dissimilar weld joints of steel P91

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

This paper addresses the issue of C and N redistribution in weld joints of creep-resistant chromium steels. The redistribution of C and N was measured using the wave-dispersive X-ray method. The conditions of the long-term diffusion annealing process were: temperature 575, 625 and 700 oC; time 10, 100, 1 000 and 5 000 hours. It was ascertained that C and N diffused from the low-alloy steels to the high-alloy steel P91. The carbon diffusion coefficients in the individual steels of 15128/P91 and SK3STC/P91 weld joints, the ratio between the thermodynamic activity coefficients of carbon in joints, the diffusion interaction parameters , and their temperature dependencies were estimated from carbon concentration curves. The paper also contains a microstructure analysis of decarburized and carburized zones in the weld joints studied.

English abstract

This paper addresses the issue of C and N redistribution in weld joints of creep-resistant chromium steels. The redistribution of C and N was measured using the wave-dispersive X-ray method. The conditions of the long-term diffusion annealing process were: temperature 575, 625 and 700 oC; time 10, 100, 1 000 and 5 000 hours. It was ascertained that C and N diffused from the low-alloy steels to the high-alloy steel P91. The carbon diffusion coefficients in the individual steels of 15128/P91 and SK3STC/P91 weld joints, the ratio between the thermodynamic activity coefficients of carbon in joints, the diffusion interaction parameters , and their temperature dependencies were estimated from carbon concentration curves. The paper also contains a microstructure analysis of decarburized and carburized zones in the weld joints studied.

Keywords

structural stabilidy, creep-resistant steels, weld joints, redistribution of C and N

Key words in English

structural stabilidy, creep-resistant steels, weld joints, redistribution of C and N

Authors

FORET, R., MILLION, B., SVOBODA, M., STRÁNSKÝ, K.

Released

01.01.2002

ISBN

1362-1718

Periodical

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING

Volume

6

Number

6

State

United Kingdom of Great Britain and Northern Ireland

Pages from

405

Pages count

7

BibTex

@article{BUT40412,
  author="Rudolf {Foret} and Bořivoj {Milion} and Milan {Svoboda} and Karel {Stránský}",
  title="Structural stability of dissimilar weld joints of steel P91",
  journal="SCIENCE AND TECHNOLOGY OF WELDING AND JOINING",
  year="2002",
  volume="6",
  number="6",
  pages="7",
  issn="1362-1718"
}