Remelting of Aluminum Scrap Into Billets Using Direct Chill Casting-Reference-Cited by-同舟云学术

Remelting of Aluminum Scrap Into Billets Using Direct Chill Casting

Published:2024-01-04 Issue: Volume: Page:
ISSN:2299-2944
Container-title:Archives of Foundry Engineering
language:pl
Short-container-title:

Author:

Rajagukguk Kardo¹²³^ORCID,Suyitno Suyitno⁴³,Saptoadi Harwin¹,Kusumaningtyas I. K. Indraswari¹,Arifvianto Budi¹³,Mahardika Muslim¹³

Affiliation:

1. Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jl. Grafika 2, Yogyakarta 55281, Indonesia

2. Department of Mechanical Engineering, Institut Teknologi Sumatera (ITERA), Jl. Terusan Ryacudu, South Lampung, Lampung 35365, Indonesia

3. Center for Innovation of Medical Equipment and Devices (CIMEDs), Universitas Gadjah Mada, Jl. Teknika Utara Yogyakarta 55281, Indonesia

4. Department of Mechanical Engineering, Faculty of Engineering, Universitas Tidar, Jl. Kapten Suparman 39, North Magelang, 56116, Indonesia

Abstract

An as-cast aluminum billet with a diameter of 100 mm has been successfully prepared from aluminum scrap by using direct chill (DC) casting method. This study aims to investigate the microstructure and mechanical properties of such as-cast billets. Four locations along a cross-section of the as-cast billet radius were evaluated. The results show that the structures of the as-cast billet are a thin layer of coarse columnar grains at the solidified shell, feathery grains at the half radius of the billet, and coarse equiaxed grains at the billet center. The grain size tends to decrease from the center to the surface of the as-cast billet. The ultimate tensile strength (UTS) and the hardness values obtained from this research slightly increase from the center to the surface of the as-cast billet. The distribution of Mg, Fe, and Si elements over the cross-section of the as-cast billet is inhomogeneous. The segregation analysis shows that Si has negative segregation towards the surface, positive segregation at the middle, and negative segregation at the center of the as-cast billet. On the other hand, the Mg element is distributed uniformly in small quantities in the cross-section of the as-cast billet.

Publisher

Polish Academy of Sciences Chancellery

Link

https://journals.pan.pl/Content/130420/PDF/AFE%201_2024_06.pdf

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