MATERIALS IN EXTREMAL CONDITIONS PACS numbers: 46.15.-x, 46.55.+d, 68.35.bd, 81.15.Pq, 81.40.Pq, 82.45.Bb Effect of Incomplete Replacement of Cr for Cu in the Deposited Alloy of Fe–C–Cr–B–Ti Alloying System with a Medium Boron Content (0.5% wt.) on its Corrosion Resistance B. O. Trembach * , M. G. Sukov * , V. A. Vynar ** , I. O. Trembach *, *** , V. V. Subbotinа **** , O. Yu. Rebrov **** , O. M. Rebrova **** , and V. I. Zakiev *****, ****** * Private Joint Stock Company ‘Novokramatorsky Mashinostroitelny Zavod’, 5 Oleksa Tikhoy Str., UA-84305 Kramatorsk, Ukraine ** G. V. Karpenko Physico-Mechanical Institute, N.A.S. of Ukraine, 5 Naukova Str., UA-79060 Lviv, Ukraine *** Donbass State Engineering Academy, 72 Akademichna Str., UA-84313 Kramatorsk, Ukraine **** National Technical University ‘Kharkiv Polytechnic Institute’, 2 Kyrpychova Str., UA-61002 Kharkiv, Ukraine ***** National Aviation University, 1 Lyubomyr Huzar Ave., UA-03058 Kyiv, Ukraine ****** National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine In this research, the corrosion behaviour of the Fe–C–Cr–B–Ti alloying system deposited alloys applied by flux-cored arc welding are studied. Samples of de- posited alloy with a high content of chromium (13% by weight of Cr) received Corresponding author: Bohdan O. Trembach E-mail: btrembach@ukr.net Citation: B. O. Trembach, M. G. Sukov, V. A. Vynar, I. O. Trembach, V. V. Subbotinа, O. Yu. Rebrov, O. M. Rebrova, and V. I. Zakiev, Effect of Incomplete Replacement of Cr for Cu in the Deposited Alloy of Fe–C–Cr–B–Ti Alloying System with a Medium Bo- ron Content (0.5% wt.) on its Corrosion Resistance, Metallofiz. Noveishie Tekhnol., 44, No. 4: 493–513 (2022). DOI: 10.15407/mfint.44.04.0493 493 Metallophysics and Advanced Technologies Ìåòàëîôіç. íîâіòíі òåõíîë. Metallofiz. Noveishie Tekhnol. 2022, vol. 44, No. 4, pp. 493–513 https://doi.org/10.15407/mfint.44.04.0493 Reprints available directly from the publisher  2022 G. V. Kurdyumov Institute for Metal Physics, National Academy of Sciences of Ukraine Published by license under the G. V. Kurdyumov Institute for Metal Physics– N.A.S. of Ukraine Publishers imprint. Printed in Ukraine.