Crack Resistance of Welded Joints of Pipe Steels of Strength Class K60 of Different Alloying Systems

The crack resistance of welded joints of pipe steels of strength class K60 and different alloying systems is studied. The parameter of the crack tip opening displacement (CTOD) is shown to be dependent on the size of the austenite grains and on the morphology of bainite in the superheated region of...

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Veröffentlicht in:	Metal science and heat treatment 2018-03, Vol.59 (11-12), p.767-772
Hauptverfasser:	Tabatchikova, T. I., Tereshchenko, N. A., Yakovleva, I. L., Makovetskii, A. N., Shander, S. V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloy steels Alloy systems Alloying Characterization and Evaluation of Materials Chemistry and Materials Science Classical Mechanics Crack opening displacement Crack propagation Engineering Thermodynamics Heat affected zone Heat and Mass Transfer Materials Science Metallic Materials Pipe and tube industry Steel products Welded Joints
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Beschreibung
Zusammenfassung:	The crack resistance of welded joints of pipe steels of strength class K60 and different alloying systems is studied. The parameter of the crack tip opening displacement (CTOD) is shown to be dependent on the size of the austenite grains and on the morphology of bainite in the superheated region of the heat-affected zone of the weld. The crack resistance is shown to be controllable due to optimization of the alloying system.
ISSN:	0026-0673 1573-8973
DOI:	10.1007/s11041-018-0224-3