The Paton Welding Journal, 2023, №09



2023 №09 (04)

DOI of Article 10.37434/tpwj2023.09.05

2023 №09 (06)

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The Paton Welding Journal, 2023, #9, 31-37 pages

Thermal processes and evolution of stainless steel structure in friction stir welding with a tool from pcBN

A.L. Maistrenko¹, M.P. Bezhenar¹, S.D. Zabolotnyi¹, V.A. Dutka¹, M.O. Cherviakov², A.M. Stepanets¹, I.O. Gnatenko¹, M.O. Tsysar¹

¹V. Bakul Institute for Superhard Materials of the NAS of Ukraine. 2 Avtozavodska Str., 04074, Kyiv. E-mail: otdel9m@ism.kiev.ua
²E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Abstract
It is shown that application of superhard materials based on cubic boron nitride for manufacture of working components of the tool for realization of friction stir welding processes allows ensuring the tool thermomechanical resistance. Computer modeling of the temperature field in the tool, and in steel parts during friction stir welding of stainless steels with a tool based on polycrystalline boron nitride (pcBN) was performed. Agreement between the numerical and experimental results of temperature distribution in the tool movement zone is shown. Strength of welded joints of stainless steel parts was determined, and evolution of weld structure was analysed. 17 Fig., 4 Tabl., 8 Fig.
Keywords: structure evolution, friction stir welding, tool, kiborit, strength, modeling, stainless steels, temperature field

Received: 28.06.2023
Accepted: 09.10.2023

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