Metallurgy, Vol. 52 No. 2, 2013.
Original scientific paper
The effect of variable loading onintegrity of a welded joint of high alloy-steel X20
Z. Burzić
; Military Technical Institute, Belgrade, Serbia
Dž. Gačo
; Technical faculty, University of Bihac,Bihac, Bosnia and Herzegovina
F. Islamović
; Technical faculty, University of Bihac,Bihac, Bosnia and Herzegovina
M. Burzić
; University of Belgrade, I.C. Faculty of Mechanical Engineering, Belgrade, Serbia
E. Bajramović
; Technical faculty, University of Bihac,Bihac, Bosnia and Herzegovina
Abstract
In present paper, experimental investigations have included the effect of exploitation conditions (exploitation time and temperature) on properties of high-cycle fatigue and parameters of fatigue-crack growth of a welded joint of steel X20 CrMoV 12-1 (X20). The effect of exploitation conditions was analysed by testing new pipe and the pipe having been exploited for 116 000 hours. The results obtained by testing and their analysis provide a practical contribution to assessment of quality of a welded joint of steel X20, the aim of which is revitalisation and extension of exploitation life of vital components of thermal power plants manufactured from high-alloy steel for operation at elevated temperatures.
Keywords
high alloy steel X20 CrMoV 12-1; welded joint; high cycle fatigue; fatigue crack growth; fatigue threshold
Hrčak ID:
92532
URI
Publication date:
1.4.2013.
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