Hydrogen Embrittlement of Ti-Al6-V4 Alloy Manufactured by Laser Powder Bed Fusion Induced by Electrochemical Charging

Roudnicka, Michaela; Kacenka, Zdenek; Dvorsky, Drahomir; Drahokoupil, Jan; Vojtech, Dalibor

doi:10.3390/met14020251

Open AccessArticle

Hydrogen Embrittlement of Ti-Al6-V4 Alloy Manufactured by Laser Powder Bed Fusion Induced by Electrochemical Charging

by

Michaela Roudnicka

^1,*

,

Zdenek Kacenka

²,

Drahomir Dvorsky

¹

,

Jan Drahokoupil

¹ and

Dalibor Vojtech

²

¹

Institute of Physics, Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic

²

Department of Metals and Corrosion Engineering, University of Chemistry and Technology, Technicka 5, 166 28 Prague, Czech Republic

^*

Author to whom correspondence should be addressed.

Metals 2024, 14(2), 251; https://doi.org/10.3390/met14020251

Submission received: 19 January 2024 / Revised: 16 February 2024 / Accepted: 16 February 2024 / Published: 19 February 2024

(This article belongs to the Special Issue Study of Hydrogen Embrittlement of Metallic Materials)

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Abstract

The 3D printing of Ti-Al6-V4 alloy is subject to much current investigation, with Laser Beam Powder Bed Fusion (PBF-LB/M) being one of the most applied technologies. Ti-Al6-V4 alloy, despite its great material properties, is susceptible to hydrogen penetration and consequent embrittlement. The level of susceptibility to hydrogen penetration depends on the microstructural state of the alloy. In this work, we compare the effect of electrochemical charging by hydrogen on Ti-Al6-V4 alloy prepared by PBF-LB/M, either in the as-built state or annealed, and conventionally prepared alloy. At the same charging conditions, considerably different hydrogen concentrations were achieved, with the as-built 3D-printed material being the most susceptible. The changes in mechanical properties are discussed in relation to changes in microstructure, studied using microscopy, X-ray, and electron diffraction techniques.

Keywords: hydrogen; hydrogen trapping; titanium; Ti-Al6-V4; 3D printing; laser beam powder bed fusion

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MDPI and ACS Style

Roudnicka, M.; Kacenka, Z.; Dvorsky, D.; Drahokoupil, J.; Vojtech, D. Hydrogen Embrittlement of Ti-Al6-V4 Alloy Manufactured by Laser Powder Bed Fusion Induced by Electrochemical Charging. Metals 2024, 14, 251. https://doi.org/10.3390/met14020251

AMA Style

Roudnicka M, Kacenka Z, Dvorsky D, Drahokoupil J, Vojtech D. Hydrogen Embrittlement of Ti-Al6-V4 Alloy Manufactured by Laser Powder Bed Fusion Induced by Electrochemical Charging. Metals. 2024; 14(2):251. https://doi.org/10.3390/met14020251

Chicago/Turabian Style

Roudnicka, Michaela, Zdenek Kacenka, Drahomir Dvorsky, Jan Drahokoupil, and Dalibor Vojtech. 2024. "Hydrogen Embrittlement of Ti-Al6-V4 Alloy Manufactured by Laser Powder Bed Fusion Induced by Electrochemical Charging" Metals 14, no. 2: 251. https://doi.org/10.3390/met14020251

APA Style

Roudnicka, M., Kacenka, Z., Dvorsky, D., Drahokoupil, J., & Vojtech, D. (2024). Hydrogen Embrittlement of Ti-Al6-V4 Alloy Manufactured by Laser Powder Bed Fusion Induced by Electrochemical Charging. Metals, 14(2), 251. https://doi.org/10.3390/met14020251

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Hydrogen Embrittlement of Ti-Al6-V4 Alloy Manufactured by Laser Powder Bed Fusion Induced by Electrochemical Charging

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