Identifying the influence of pouring temperature, Al-RHA composition, and pattern thickness on the properties of Al-RHA composites produced by evaporative casting

Authors

DOI:

https://doi.org/10.15587/1729-4061.2024.310274

Keywords:

evaporative casting, Al-RHA composites, pouring temperature, physical-mechanical properties, pattern thickness

Abstract

This study investigated the effect of pouring temperature, Al-RHA composition and pattern thickness on fluidity length, surface roughness at Al-RHA composition (85:15, 80:20, 75:25) %, pouring temperature (650, 700, 750) °C, and pattern thickness (1, 2, 3, 4, 5, 6, 10) mm. The challenge in this study is to optimize the fluidity length and hardness but minimize the surface roughness and porosity of the composite. The results showed that raising the pouring temperature increased the fluidity length, surface roughness, hardness, and porosity. Higher pouring temperature caused an increase in fluidity length by 13.51–54.17 % when the temperature raised from 650 °C to 750 °C. This was accompanied by an increase in hardness by 1.96–10.69 %. However, higher temperature also resulted in increased surface roughness by 3.9–7.92 % and increased porosity by 1.3–3 %. The composition ratio of Al-RHA plays an important role in determining the physical and mechanical properties of the composites. Increasing RHA content tends to increase the fluidity length but increases the surface roughness, hardness, and porosity. The higher RHA content increases the fluidity length by 2.44–11.9 % and the hardness also increases by 1.26–12.87 %. However, the higher RHA composition also increases the surface roughness by 1.2–30.95 % and the porosity increases by 2–2.7 %. The larger pattern thickness increases the fluidity length by 10.53–60.42 %. Controlling the RHA content and pouring temperature is very important to improve the physical-mechanical properties of Al-RHA composites. The results have potential applications in industries that require special composite materials such as automotive, aerospace, machinery and agricultural equipment

Author Biographies

Rudi Siswanto, Lambung Mangkurat University

Doctoral Student of Agricultural Science Program

Rachmat Subagyo, Lambung Mangkurat University

Professor of Mechanical Engineering

Department of Mechanical Engineering

Mastiadi Tamjidillah, Lambung Mangkurat University

Professor of Mechanical Engineering

Department of Mechanical Engineering

Mahmud Mahmud, Lambung Mangkurat University

Environmental Engineering Lecturer

Department of Environmental Engineering

Muhammad Soleh Indra Setiawan, Lambung Mangkurat University

Student of Mechanical Engineering

Department of Mechanical Engineering

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Identifying the influence of pouring temperature, Al-RHA composition, and pattern thickness on the properties of Al-RHA composites produced by evaporative casting

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Published

2024-10-30

How to Cite

Siswanto, R., Subagyo, R., Tamjidillah, M., Mahmud, M., & Setiawan, M. S. I. (2024). Identifying the influence of pouring temperature, Al-RHA composition, and pattern thickness on the properties of Al-RHA composites produced by evaporative casting. Eastern-European Journal of Enterprise Technologies, 5(12 (131), 39–49. https://doi.org/10.15587/1729-4061.2024.310274

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Materials Science