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Volume 10
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10.3390/met10121568
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Article

Strength and Ductility Improvement through Thermomechanical Treatment of Wire-Feed Electron Beam Additive Manufactured Low Stacking Fault Energy (SFE) Aluminum Bronze

by
Ekaterina Khoroshko
1,
Andrey Filippov
1,*,
Sergei Tarasov
1,2,
Nikolay Shamarin
1,
Evgeny Moskvichev
1,
Sergei Fortuna
1,
Dmitry V. Lychagin
3 and
Evgeny Kolubaev
1
1
Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, Pr. Akademicheskiy 2/4, 634055 Tomsk, Russia
2
Department of Materials Science, National Research Tomsk Polytechnic University, Lenin Av., 30, 634050 Tomsk, Russia
3
Faculty of Geology and Geography, National Research Tomsk State University, Lenin Av. 36, 634050 Tomsk, Russia
*
Author to whom correspondence should be addressed.
Metals 2020, 10(12), 1568; https://doi.org/10.3390/met10121568
Submission received: 2 November 2020 / Revised: 19 November 2020 / Accepted: 20 November 2020 / Published: 24 November 2020
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Abstract

An as-cast macrostructure of electron beam additively manufactured metallic materials was represented by coarse columnar grains whose axes were inclined at 25° with respect to the substrate’s plane. One part of the as-grown samples was annealed to form a coarse grain microstructure while the other part was pre-deformed by forging and then annealed what allowed obtaining recrystallized microstructures with small grains and multiple annealing twin boundaries. This sample showed both high strength and plasticity during the tensile tests. These tensile tests demonstrated also two-stage stress-strain curves as depended on their strain hardening rates. High and low strain hardening rates corresponded to a twinning-dominated deformation at stage II and dislocation-base deformation at stage III. A submicron size strain-induced grain-subgrain microstructure was formed in the vicinity of a necked zone as a result of combined twinning/dislocation grain refining.
Keywords: additive manufacturing; electron beam; aluminum bronze; microstructure; mechanical properties additive manufacturing; electron beam; aluminum bronze; microstructure; mechanical properties

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MDPI and ACS Style

Khoroshko, E.; Filippov, A.; Tarasov, S.; Shamarin, N.; Moskvichev, E.; Fortuna, S.; Lychagin, D.V.; Kolubaev, E. Strength and Ductility Improvement through Thermomechanical Treatment of Wire-Feed Electron Beam Additive Manufactured Low Stacking Fault Energy (SFE) Aluminum Bronze. Metals 2020, 10, 1568. https://doi.org/10.3390/met10121568

AMA Style

Khoroshko E, Filippov A, Tarasov S, Shamarin N, Moskvichev E, Fortuna S, Lychagin DV, Kolubaev E. Strength and Ductility Improvement through Thermomechanical Treatment of Wire-Feed Electron Beam Additive Manufactured Low Stacking Fault Energy (SFE) Aluminum Bronze. Metals. 2020; 10(12):1568. https://doi.org/10.3390/met10121568

Chicago/Turabian Style

Khoroshko, Ekaterina, Andrey Filippov, Sergei Tarasov, Nikolay Shamarin, Evgeny Moskvichev, Sergei Fortuna, Dmitry V. Lychagin, and Evgeny Kolubaev. 2020. "Strength and Ductility Improvement through Thermomechanical Treatment of Wire-Feed Electron Beam Additive Manufactured Low Stacking Fault Energy (SFE) Aluminum Bronze" Metals 10, no. 12: 1568. https://doi.org/10.3390/met10121568

APA Style

Khoroshko, E., Filippov, A., Tarasov, S., Shamarin, N., Moskvichev, E., Fortuna, S., Lychagin, D. V., & Kolubaev, E. (2020). Strength and Ductility Improvement through Thermomechanical Treatment of Wire-Feed Electron Beam Additive Manufactured Low Stacking Fault Energy (SFE) Aluminum Bronze. Metals, 10(12), 1568. https://doi.org/10.3390/met10121568

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