Publication 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
Type
journal article - other
Language
English
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.
Keywords
structural stabilidy, creep-resistant steels, weld joints, redistribution of C and N
Authors
FORET, R., MILLION, B., SVOBODA, M., STRÁNSKÝ, K.
RIV year
2002
Released
1. 1. 2002
ISBN
1362-1718
Periodical
Science and Technology of Welding and Joinig
Year of study
6
Number
6
State
United Kingdom of Great Britain and Northern Ireland
Pages from
405
Pages to
411
Pages count
7
BibTex
@{BUT71861
}