Analiza vpliva vibracij na lastnosti oblikovno navarjenih kovinskih izdelkov AlMg5

Testen, Jan (author), Trdan, Uroš (mentor), Klobčar, Damjan (comentor)

V zadnjem obdobju so se med-procesne vibracije med aditivno izdelavo kovinskih komponent izkazale kot izredno perspektivna metoda za izboljšanje materialne lastnosti, zaradi česar so bile obravnavane v številnih raziskavah. Iz tega vidika je diplomsko delo osredotočeno na preučevanje vpliva vibracij pri oblikovnem navarjanju kovinskih sten iz zlitine AlMg5. V okviru raziskovalnega dela so bile uporabljene različne metode za vrednotenje, vključno z merjenjem geometrijskih lastnosti, analizo mikrostrukture in zaostalih napetosti v materialu z uporabo rentgenske difrakcije. Rezultati eksperimentalnega dela so potrdili pozitiven vpliv med-procesnih vibracij na geometrijske in topografske značilnosti izdelkov. Poleg tega smo z uporabo vibracij dosegli manjša kristalna zrna ter bolj homogeno mikrostrukturo materiala. Hkrati smo ob uporabi vibracij dosegli enakomernejšo porazdelitev zaostalih napetosti, kar je prispevalo k povečanju učinkovitosti izgradnje za 6 % in zmanjšanju valovitosti za 0,15 mm. Velikost kristalnih zrn se je ob tem zmanjšala iz 3600 ± 240 µm2 na 2340 ± 280 µm2. Dotični rezultati predstavljajo obetavne smernice za nadaljnje izboljšave aditivne izgradnje komponent z implementacijo vibracij, kot nadomestek naknadnih po-obdelav.

• Language: Slovenian
• Keywords: aditivno izdelane kovinske komponente, 3D obločno navarjanje, zlitina AlMg5, med-procesne vibracije, XRD zaostale napetosti, kristalna struktura
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [J. Testen]
• Year: 2023
• Number of pages: XXII, 59 str.
• PID: 20.500.12556/RUL-148670
• UDC: 534:621.791.75:531.222(043.2)
• COBISS.SI-ID: 183486467
• Publication date in RUL: 29.08.2023

TESTEN, Jan, 2023, Analiza vpliva vibracij na lastnosti oblikovno navarjenih kovinskih izdelkov AlMg5 [online]. Bachelor’s thesis. Ljubljana : J. Testen. [Accessed 26 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=148670

Secondary language

• Language: English
• Title: Analysis of the influence of vibrations on the properties of additive manufactured AlMg5 metal products

Abstract

In recent times, inter-process vibrations during additive manufacturing of metal components have proven to be an extremely promising method for improving material properties, leading to their investigation in numerous studies. From this perspective, the thesis focuses on examining the influence of vibrations in the additive manufacturing of metal walls made of AlMg5 alloy. Various methods were used in the research, including measuring geometric properties, analyzing microstructure, and studying residual stresses in the material using X-ray diffraction. The results of the experimental work confirmed the positive impact of inter-process vibrations on the geometric and topographic characteristics of the products. Additionally, vibrations resulted in smaller crystal grains and a more homogenous microstructure of the material. Simultaneously, the use of vibrations led to a more uniform distribution of residual stresses, contributing to a 6 % increase in construction efficiency and a reduction in waviness by 0,15 mm. The size of crystal grains was reduced from 3600 ± 240 µm2 to 2340 ± 280 µm2. These findings represent promising directions for further improvements in additive manufacturing of components by implementing vibrations as a substitute for subsequent post-processing.

• Keywords: additively manufactured metal components, 3D arc welding deposition, AlMg5 alloy, Inter-process vibrations, XRD residual stress, crystal structure