MATEC Web Conf.
Volume 143, 2018IV International Young Researchers Conference “Youth, Science, Solutions: Ideas and Prospects” (YSSIP-2017)
|Number of page(s)||8|
|Published online||08 January 2018|
Features of the structural phase state of a weld produced by electron-beam welding in the submicrocrystalline grade 2 titanium alloy
Tomsk State University of Architecture and Building, 634003 Tomsk, Russia
2 National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
3 National Research Tomsk State University, 634050 Tomsk, Russia
4 Polyus Scientific and Production Center JSC, 634041 Tomsk, Russia
5 Gazprom transgaz Surgut, LLC, Technical and Engineering Center, 628404 Surgut, Russia
* Corresponding author: firstname.lastname@example.org
This paper presents the results of structural studies for a welded joint of the Grade 2 titanium alloy in submicrocrystalline and microcrystalline states produced by electron beam welding when joining 2-mm-thick plates. Microhardness distribution patterns of the Grade-2 titanium alloy in micro- and submicrocrystalline states are identified in the weld zone and heat-affected zone. These patterns reflect a difference in structural phase states. It is assumed that one of the key factors affecting both the structural state and microhardness distribution in the weld zone and heat-affected zone during electron-beam welding is high concentration of oxygen atoms embedded into the crystal lattice of α–Ti-based solid solution.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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