| 2012 №03 (07) | 2012 №03 (09) |
The Paton Welding Journal, 2012, #3, 35-39 pages
COLD RESISTANCE AND LAMELLAR FRACTURE RESISTANCE OF WELDED JOINTS ON STEEL 06GB-390
V.D. POZNYAKOV, A.Yu. BARVINKO, Yu.P. BARVINKO, A.G. SINEOK and A.N. YASHNIK
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
Abstract
The paper presents results of investigation of resistance of steel 06GB-390 to lamellar-tough and lamellar-brittle fractures, as well as of evaluation of impact toughness (KCV-40) of the weld and HAZ metals of butt joints on this steel (as-welded and after heat treatment). The joints were welded in free and rigidly restrained states. It is shown that steel 06GB-390 is not susceptible to lamellar-tough and lamellar-brittle fractures, while impact toughness of the weld and HAZ metals of the butt joints hardly changes in any of the cases.
Keywords: arc welding, low-alloy steels, oil storage tanks, HAZ metal, impact toughness, heat treatment of welded joint, welding in rigid contour, welding strains, lamellar fracture
Received: 02.11.11
Published: 28.03.12
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