The effect of direct energy deposition arc mode on the porosity of AA5087 aluminum alloy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F24%3A00377742" target="_blank" >RIV/68407700:21220/24:00377742 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.matlet.2024.136224" target="_blank" >https://doi.org/10.1016/j.matlet.2024.136224</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matlet.2024.136224" target="_blank" >10.1016/j.matlet.2024.136224</a>

Result language
angličtina
Original language name
The effect of direct energy deposition arc mode on the porosity of AA5087 aluminum alloy
Original language description
The paper evaluates the effect of the welding mode of the CMT-based direct energy deposition arc (DED-Arc) process on the porosity of AA5087 aluminum alloy walls. Three welding modes were used to produce the walls: cold metal transfer (CMT), CMT-Pulse (CMT-P), and CMT Cycle -Step (CMT-CS) with heat inputs of 128.5 J/mm, 150.4 J/mm, and 152 J/mm, respectively. Porosity was assessed with a light microscopy (LM) and computer tomography (CT). The wall produced with the lowest heat input had the lowest average porosity of 0.641 % compared to CMT-P (0.799 %) and CMT-CS (0.766 %). CT results followed the same trend with porosity of 0.21 %, 0.32 %, and 0.27 % for CMT, CMT-P, and CMT-CS, respectively. The porosity level strongly correlates with the hydrogen content. The lowest porosity (CMT) at the lowest hydrogen content (5.29 ppm) is associated with lower hydrogen solubility in a molten pool at lower heat inputs. Most of the detected pores in all modes ranged from 51 to 100 mu m in size.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/EF18_053%2F0016980" target="_blank" >EF18_053/0016980: Mobility CTU - STA</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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