Hardening mechanisms in a high wall thickness sour service pipe steel API 5L X65 before and after post-welding heat treatments

The strength of the pipe region opposite to the weld in a high wall thickness sour service pipeline steel API 5L X65, manufactured by the SAW UOE process, has been studied in detail. The fundamental hardening mechanisms that contribute to the yield strength of this pipe portion were determined accor...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2022-08, Vol.851, p.143612, Article 143612
Hauptverfasser:	Morales, E.V., Betancourt, G., Fernandes, J.R., Batista, G.Z., Bott, I.S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Grain size Heat treating Heat treatment High strength low alloy steels Microstructure Pipeline steel Pipes Precipitation hardening Precipitation hardening steels Solid solutions Strengthening Strengthening mechanisms Stress relief heat treatment Stress relieving Structural steels Transmission electron microscopy Wall thickness Yield strength Yield stress
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