Comparative study of degassing method by using NaF-NaNO3-based tablet degasser, technical argon gas, and pure argon gas in aluminum casting

Dhaneswara, Donanta; Firmansyah, Muhammad Reza; Prasetyo, Yus; Ashari, Ahmad

doi:10.1063/5.0001916

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…The 1 wt% Mg is added to the molten metal for increasing the wettability of B 4 C and Al7050 matrix material [17]. The unwanted gas formation is avoided by using degassing tablet [18]. The L9 orthogonal array combination specimens are prepared by using stir casting setup.…”

Section: Methodsmentioning

confidence: 99%

Optimization on Stir Casting Process Parameters of Al7050/Nano-B4C Metal Matrix Composites

Ananth¹,

Krishnan²,

Thirugnanam³

et al. 2023

Journal of Nanomaterials

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Aluminum matrix composites are widely employed in aerospace, military, automobile, and transport applications. The high-strength with low-weight materials are required to fulfill the requirement of high-performance applications. The low-weight materials are reinforced with hard reinforcements to obtain high-strength-to-weight properties for using high-performance applications. The process parameters of fabrication technique define the mechanical and tribological properties. Many types of optimization tools are used for optimizing the process parameters of fabrication method. In this research, the aluminum alloy 7050 and boron carbide are selected as matrix material and reinforcement material. The fabrication of Al7050/B4C composites is produced by the stir casting method. The optimization on stir casting process parameters is done by using the Taguchi approach. The L9 orthogonal array is chosen for this investigation. The chosen input stir casting process parameters are wt% B4C, stirring time (10, 15, and 20 min), stirring speed (300, 350, and 400 rpm), and melting temperature (700, 750, and 800°C). The microhardness is selected as a valuable response parameter for optimizing the stir casting process parameters. The influencing stir casting process parameter sequence is determined by using mean table. The influencing parameters of stir casting on microhardness are stirring speed, stirring time, wt% B4C, and melting temperature. The 9 wt% of boron carbide addition increases the microhardness, and it is higher than the other wt%. The optimum combination of input process parameter combination is 9 wt% boron carbide, 750°C melting temperature, 350 rpm stirring speed, and 15 min stirring time (A3B2C2D2). The percentage of microhardness value improvement is 20.3%.

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Section: Methodsmentioning

confidence: 99%

Optimization on Stir Casting Process Parameters of Al7050/Nano-B4C Metal Matrix Composites

Ananth¹,

Krishnan²,

Thirugnanam³

et al. 2023

Journal of Nanomaterials

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Effect of barbotage refining time and recycled scrap content on the microstructure of EN AC 44200 alloy

Korban,

Leszczyńska-Madej

2023

Materials Today Communications

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Effect of Wood Sawdust Addition on the Morphology, Mechanical Properties, and Thermal Properties of Mullite-Based Porous Ceramic Filter Candidates for Aluminum Casting Process

Dhaneswara,

Wahyudi,

Anis

et al. 2023

AMM

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Porous ceramic is a heat-resistant porous material with extensive applications, especially for filtering inclusions in aluminum casting industry. To meet local need for these filters, ceramic foam is fabricated by mixing raw materials including kaolin and chamotte as base material, wood sawdust (WSD) as pore-forming agent (PFA), and carboxymethyl cellulose (CMC) with water as binder. WSD content variable: 0%, 5%, 10%, and 15% was used for this research. The mixture was then formed with dry-press method and sintered at 1200°C to form mullite-based local filters. Characterization of samples morphology, composition, and phase were done using SEM-EDS, XRD, and XRF, while its mechanical and thermal properties were characterized by conducting STA, porosity, coefficient thermal expansion (CTE), permanent linear change (PLC), and flexural strength testing. Results showed an increase of WSD addition on the local filter increased the formation number of open-type pores in fiber form on the ceramic microstructure, no significant heat exchanges from decomposition were detected, increased CTE value from 0,0071 to 0,0371%, PLC from 0,0025 to 0,0345%, apparent porosity from 33,29 to 47,95%, and water infiltration from 18,27 to 33,05%, as well as decreased flexural strength from 13,48 to 6,33 MPa and density from 1.82 to 1.43 g/cm3.

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Comparative study of degassing method by using NaF-NaNO3-based tablet degasser, technical argon gas, and pure argon gas in aluminum casting

Cited by 3 publications

References 4 publications

Optimization on Stir Casting Process Parameters of Al7050/Nano-B4C Metal Matrix Composites

Optimization on Stir Casting Process Parameters of Al7050/Nano-B4C Metal Matrix Composites

Effect of barbotage refining time and recycled scrap content on the microstructure of EN AC 44200 alloy

Effect of Wood Sawdust Addition on the Morphology, Mechanical Properties, and Thermal Properties of Mullite-Based Porous Ceramic Filter Candidates for Aluminum Casting Process

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