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Effect of Chemical Composition Change on Mechanical and Microstructural Properties of Aluminum Alloys Processed by Selective Laser Melting

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F22%3APU147582" target="_blank" >RIV/00216305:26210/22:PU147582 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://www.confer.cz/metal/2022/4431-effect-of-chemical-composition-change-on-mechanical-and-microstructural-properties-of-aluminum-alloys-processed-by-selective-laser-melting" target="_blank" >https://www.confer.cz/metal/2022/4431-effect-of-chemical-composition-change-on-mechanical-and-microstructural-properties-of-aluminum-alloys-processed-by-selective-laser-melting</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.37904/metal.2022.4431" target="_blank" >10.37904/metal.2022.4431</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Effect of Chemical Composition Change on Mechanical and Microstructural Properties of Aluminum Alloys Processed by Selective Laser Melting

  • Popis výsledku v původním jazyce

    Additive manufacturing (AM) has been increasingly used to produce metal components in the last few decades. One of the most popular AM technologies is Selective Laser Melting (SLM). Materials prepared by SLM technology show very good mechanical properties, even though in these materials many defects are present, such as spherical pores, keyhole pores, lack of fusion porosity or cracks. The mentioned defects can be minimized by optimizing the process parameters or changing the chemical composition of the material. Therefore, the objective of this study is to describe changes in the microstructure and mechanical properties depending on the Al alloys chemistry. Three new alloys with different chemical compositions (differs in silica content) were prepared by mechanical mixing of the conventional alloys AlSi12 and AlCu2Mg1.5Ni, and subsequently processed by SLM technology with the same process parameters. Relative density (RD), type of defects, and microstructure were studied in all cases by light microscopy (LM). Mechanical properties were determined by tensile tests performed at room temperature and by hardness tests (HV0.3). Fractographic analysis was performed on fracture surfaces after tensile tests using scanning electron microscopy (SEM). It was found that with an increasing percentage of silica, the RD increases from 95.8 % to 98.8 %. The new alloy with the highest Si content showed the highest tensile test characteristics (UTS = 453 MPa, YS = 243 MPa, and A5.65 = 7.74 %). However, the hardness test did not show a significant difference in the values of individual alloys.

  • Název v anglickém jazyce

    Effect of Chemical Composition Change on Mechanical and Microstructural Properties of Aluminum Alloys Processed by Selective Laser Melting

  • Popis výsledku anglicky

    Additive manufacturing (AM) has been increasingly used to produce metal components in the last few decades. One of the most popular AM technologies is Selective Laser Melting (SLM). Materials prepared by SLM technology show very good mechanical properties, even though in these materials many defects are present, such as spherical pores, keyhole pores, lack of fusion porosity or cracks. The mentioned defects can be minimized by optimizing the process parameters or changing the chemical composition of the material. Therefore, the objective of this study is to describe changes in the microstructure and mechanical properties depending on the Al alloys chemistry. Three new alloys with different chemical compositions (differs in silica content) were prepared by mechanical mixing of the conventional alloys AlSi12 and AlCu2Mg1.5Ni, and subsequently processed by SLM technology with the same process parameters. Relative density (RD), type of defects, and microstructure were studied in all cases by light microscopy (LM). Mechanical properties were determined by tensile tests performed at room temperature and by hardness tests (HV0.3). Fractographic analysis was performed on fracture surfaces after tensile tests using scanning electron microscopy (SEM). It was found that with an increasing percentage of silica, the RD increases from 95.8 % to 98.8 %. The new alloy with the highest Si content showed the highest tensile test characteristics (UTS = 453 MPa, YS = 243 MPa, and A5.65 = 7.74 %). However, the hardness test did not show a significant difference in the values of individual alloys.

Klasifikace

  • Druh

    D - Stať ve sborníku

  • CEP obor

  • OECD FORD obor

    20501 - Materials engineering

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/EF16_025%2F0007304" target="_blank" >EF16_025/0007304: Materiály s vnitřní architekturou strukturované pro aditivní technologie</a><br>

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Ostatní

  • Rok uplatnění

    2022

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název statě ve sborníku

    31st International Conference on Metallurgy and Materials, METAL 2022

  • ISBN

    978-80-88365-06-8

  • ISSN

  • e-ISSN

  • Počet stran výsledku

    6

  • Strana od-do

    574-579

  • Název nakladatele

    TANGER Ltd.

  • Místo vydání

    Ostrava

  • Místo konání akce

    Orea Congress Hotel Brno

  • Datum konání akce

    18. 5. 2022

  • Typ akce podle státní příslušnosti

    WRD - Celosvětová akce

  • Kód UT WoS článku