Effect of Heat Treatment on Impact Strength of Welded Joint Metal Made by Submerged-Arc Welding


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Abstract

A study of the morphology of the metal structure in the near-seam section of the heat-affected zone (HAZ) is performed by simulating pipe manufacture. The influence of microstructure on HAZ metal resistance to brittle fracture is estimated. Causes for low values of the impact toughness of the HAZ metal are revealed as well as the possibility of improvement by carrying out post-welded metal local heat treatment.

About the authors

L. A. Efimenko

Gubkin Russian State University of Oil and Gas (National Research University)

Author for correspondence.
Email: lefimen@yandex.ru
Russian Federation, Moscow

T. S. Esiev

Gazprom VNIIGAZ

Email: lefimen@yandex.ru
Russian Federation, Razvilka, Moscow Region

D. V. Ponomarenko

Gubkin Russian State University of Oil and Gas (National Research University)

Email: lefimen@yandex.ru
Russian Federation, Moscow

S. P. Sevast’yanov

Gazprom VNIIGAZ

Email: lefimen@yandex.ru
Russian Federation, Razvilka, Moscow Region

I. Yu. Utkin

Gubkin Russian State University of Oil and Gas (National Research University)

Email: lefimen@yandex.ru
Russian Federation, Moscow

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