Sych, O. V. Korotovskaya, S. V. Khlusova, E. I.
Published in
Inorganic Materials: Applied Research
AbstractThis paper is focused on the study of changes in structure, impact work, and crack resistance in two sections of the simulated heat-affected zone of low-carbon low-alloy steel with a guaranteed yield strength of 420 MPa (coarse-grained and complete recrystallization sections). The various welding thermal cycles have been simulated with the ...
Efimenko, L. A. Kapustin, O. E. Ponomarenko, D. V. Utkin, I. Yu. Romantsov, A. I. Fedorov, M. A.
Published in
Physics of Metals and Metallography
Abstract—This study investigated the phase transformation kinetics of austenite in the heat-affected zone of the joints welded by laser-hybrid and submerged multi-arc welding. Optimum cooling rates to form favorable structural-phase composition in the heat-affected zone were found.
Kozyrev, N. A. Shevchenko, R. A. Usol’tsev, A. A. Prudnikov, A. N.
Published in
Steel in Translation
AbstractIn this paper, we study the effect of welding modes with subsequent isothermal exposure on the quality parameters of the welded joint under laboratory conditions using rail steel samples. Welding of the samples was performed by passing pulses of alternating electric current after welding. Welding was carried out using an MS-2008M resistance...
Kazempour-Liasi, Hassan Tajally, Mohammad Abdollah-Pour, Hassan
Published in
International Journal of Minerals, Metallurgy and Materials
The main aim of this study was to investigate liquation cracking in the heat-affected zone (HAZ) of the IN939 superalloy upon tungsten inert gas welding. A solid solution and age-hardenable filler metals were further studied. On the pre-weld heat-treated samples, upon solving the secondary γ′ particles in the matrix, primary γ′ particles in the bas...
Dragunov, V. K. Sliva, A. P. Goncharov, A. L. Zhmurko, I. E. Terent’ev, E. V. Sysoev, A. G. Marchenkov, A. Yu.
Published in
Thermal Engineering
Abstract—Specific features of fabricating welded structures of the international thermonuclear experimental reactor (ITER) blanket components are considered. The results from elaborating the technology for electron-beam welding of cooling system’s channel caps in the first wall bearing structure (FWBS) of the ITER blanket shielding module are prese...
Kozyrev, N. A. Shevchenko, R. A. Usol’tsev, A. A. Prudnikov, A. N. Bashchenko, L. P.
Published in
Steel in Translation
AbstractDuring the manufacturing of continuous welded rail track, the problem of the local hardened points in the welded joint during rail joint welding is resolved by using local heat treatment of the welded joint. As a result, the quenching structure formation is excluded. However, the appearance of new heat-affected zones with reduced hardness i...
Anakhov, S. V. Guzanov, B. N. Matushkin, A. V. Pugacheva, N. B. Pykin, Yu. A.
Published in
Steel in Translation
AbstractOptical interferometry and metallographic analysis were used to study the structure of cutting seams obtained after 09G2S steel cutting by a PMVR-5 plasma torch. These plasma torches have many design features in the gas-dynamic stabilization system of the plasma arc. The application of a new plasma torch can obtain higher quality and lower ...
López Camargo, Mónica Martin Buitrago, Aldemar Rodríguez Baracaldo, Rodolfo
This research evaluates the influence of the CO2 laser cutting velocity in the heat-affected zone in a low- carbon steel. The control of laser cutting parameters is essential to ensure that the properties required in the material have not been affected, and avoid additional grinding processes on the cut surfaces. Morphologic, mechanic and microstru...
tai-jung, wu liao, chien-chun chen, tai-cheng shiue, ren-kae tsay, leu-wen
T92 steel tubes have been widely applied in advanced supercritical boilers to replace Gr.91 tubes. Simulated samples with microstructures similar to those present in the heat-affected zone (HAZ) of a T92 steel weld were subjected to short-term creep tests in the study. T92 steel tubes were normalized at either 1213 K (L) or 1333 K (H) for 1 h, foll...
Chularis, A. A. Rzaev, R. A. Zotov, O. G. Zotova, A. O.
Published in
Russian Metallurgy (Metally)
AbstractThe microstructures of the weld core, the heat-deformation-affected zone, and the heat-affected zone having formed during the friction stir welding (FSW) of 12Kh18N10T steel and OT4-1 and VT-1 alloys are studied. The weld core of the solid-state FSW welded joints made of the metals and alloys that undergo polymorphic transformations is show...
