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10.3390/ma14185190
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Article

Modification of Mechanical Properties in Directed Energy Deposition by a Static Magnetic Field: Experimental and Theoretical Analysis

by
Aleksandr M. Filimonov
1,
Oleg A. Rogozin
1,
Oleg N. Dubinin
1,2,
Yulia O. Kuzminova
1,
Anastasia A. Shibalova
3,
Ilya V. Okulov
4,
Iskander S. Akhatov
1 and
Stanislav A. Evlashin
1,*
1
Center for Design, Manufacturing & Materials, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia
2
World-Class Research Center ”Advanced Digital Technologies,” State Marine Technical University, 190121 Saint-Peterburg, Russia
3
Institute of Nanotechnology of Microelectronics of Russian Academy of Science, 119991 Moscow, Russia
4
Leibniz Institute for Materials Engineering—IWT, 28359 Bremen, Germany
*
Author to whom correspondence should be addressed.
Materials 2021, 14(18), 5190; https://doi.org/10.3390/ma14185190
Submission received: 28 July 2021 / Revised: 2 September 2021 / Accepted: 7 September 2021 / Published: 9 September 2021
(This article belongs to the Special Issue Structure, Properties and Application of Metal and Composite Materials in Various Industries)
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Abstract

The superimposed magnetic field affects the microstructure and mechanical properties of additively manufactured metal parts. In this work, the samples were fabricated from Inconel 718 superalloy by directed energy deposition under a 0.2 T static field. The magnetohydrodynamic 1D model is proposed for the estimation of a fluid flow inside a molten pool. According to the theoretical predictions, the fluid flow is slightly decreased by an applied field. The estimated thermoelectric magnetic convection in the mushy zone is shown to be negligible to change in subgrain size, but enough to reduce the hard-to-dissolve Nb-rich phase, thereby improving the average ultimate elongation from 23% to 27%. The obtained results confirm that an external static magnetic field can modify and enhance the mechanical properties of additively manufactured materials.
Keywords: directed energy deposition; Marangoni effect; magnetohydrodynamics; Seebeck effect; thermoelectric magnetic convection directed energy deposition; Marangoni effect; magnetohydrodynamics; Seebeck effect; thermoelectric magnetic convection

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MDPI and ACS Style

Filimonov, A.M.; Rogozin, O.A.; Dubinin, O.N.; Kuzminova, Y.O.; Shibalova, A.A.; Okulov, I.V.; Akhatov, I.S.; Evlashin, S.A. Modification of Mechanical Properties in Directed Energy Deposition by a Static Magnetic Field: Experimental and Theoretical Analysis. Materials 2021, 14, 5190. https://doi.org/10.3390/ma14185190

AMA Style

Filimonov AM, Rogozin OA, Dubinin ON, Kuzminova YO, Shibalova AA, Okulov IV, Akhatov IS, Evlashin SA. Modification of Mechanical Properties in Directed Energy Deposition by a Static Magnetic Field: Experimental and Theoretical Analysis. Materials. 2021; 14(18):5190. https://doi.org/10.3390/ma14185190

Chicago/Turabian Style

Filimonov, Aleksandr M., Oleg A. Rogozin, Oleg N. Dubinin, Yulia O. Kuzminova, Anastasia A. Shibalova, Ilya V. Okulov, Iskander S. Akhatov, and Stanislav A. Evlashin. 2021. "Modification of Mechanical Properties in Directed Energy Deposition by a Static Magnetic Field: Experimental and Theoretical Analysis" Materials 14, no. 18: 5190. https://doi.org/10.3390/ma14185190

APA Style

Filimonov, A. M., Rogozin, O. A., Dubinin, O. N., Kuzminova, Y. O., Shibalova, A. A., Okulov, I. V., Akhatov, I. S., & Evlashin, S. A. (2021). Modification of Mechanical Properties in Directed Energy Deposition by a Static Magnetic Field: Experimental and Theoretical Analysis. Materials, 14(18), 5190. https://doi.org/10.3390/ma14185190

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