Keyword: «bainite»

TRANSFORMATION OF AUSTENITE IN THE OVERHEATING ZONE OF 14G2SAF PIPE STEEL DEPENDING ON THE PARAMETERS OF THERMAL WELDING CYCLES

Authors:

Ludmila Moskvitina,

Grigorii Ammosov

In this paper, a study of structural transformations of 14G2SAF pipe steel during welding, changes in its strength and ductility characteristics when simulating real thermal cycles under different ambient temperature conditions is carried out. The most optimal intervals of cooling rates were selected experimentally.

Keywords: welding, cooling rate, overheating zone, austenite, bainite, ferrite, martensite, heat treatment