Актуальные проблемы в машиностроении Том 4 №3 2017

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Актуальные проблемы в машиностроении. Том 4. № 3. 2017 Материаловедение
в машиностроении
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THE INFLUENCE OF THE EXTERNAL ELECTROMAGNETIC FIELD
ON THE STRUCTURE AND PROPERTIES OF WELD METAL
Kornienko E. E., Ph.D. (Engineering), Associate Professor, e-mail:
Bezrukova V. A., student, e-mail:
Tyutyunkova M. K., Student, e-mail:
Gnidan K. A., Graduate student, e-mail:
Novosibirsk State Technical University, 20 Prospect K. Marksa, Novosibirsk, 630073, Russian
Federation
Abstract
In this study we overlaid submerged arc the wire KF S2 onto the plates from low carbon
structural steel ST-355. In order to investigate the influence of the external electromagnetic field on
the structure and properties of the compositions we carried out overlaying using both the external
electromagnetic field and without it. The structure was investigated by the optical microscopy.
Furthermore, the microhardness measurements as well as tribological tests are shown in this article.
We demonstrated that volume fraction of acicular ferrite is increased and Widmanstatten ferrite is
decreased in the weld metal obtained with external electromagnetic field. It contributes the increase
of wear resistance and microhardness of the weld metal.
Keywords
weld deposit, external electromagnetic field, steel ST-355
Funding
This study is financially supported by DAAD within the research project № 9.756.2016/ДААД.