Centrifugal casting rotation speed effect on crystallographic orientation, microstructure, and hardness properties of the aluminum alloy
Ahmad Lubi (a*), Syamsuir (a), Reza Febriano Armas (a), Muhammad Fatihuddin (a), Danar Hari Krisyono (a), Sigit Dwi Yudanto (b), Muhammad Yunan Hasbi (b), Basori (c), Muhd Ridzuan Mansor (d), (e)

(a) Department of Mechanical Engineering, Universitas Negeri Jakarta, Jakarta, Indonesia

(b) Research Center for Metallurgy - National Research and Innovation Agency, Tangerang Selatan, Indonesia

(c) Department of Mechanical Engineering, Universitas Nasional, Jakarta, Indonesia

(d)Faculty of Technology Mechanical and Engineering, Universiti Teknikal Malaysia Melaka, Melaka, Malaysia

(e) Centre for Advanced Research on Energy, Universiti Teknikal Malaysia Melaka, Melaka, Malaysia

Abstract

Aluminum alloy is classified as a light-weight material and is widely used in automotive components due to its easy formability. Besides that, casting an aluminum alloy does not require a higher melting temperature. In the present study, various rotational speeds (75, 150, and 225 rpm) were used to produce cast aluminum Alloy using a centrifugal casting apparatus. Several investigations on the cast aluminum alloy were conducted, including crystallographic orientation, microstructure, and hardness. Increased rotation, leading to a variation in crystallite size, ranges from 30 to 43 nm. As a result, influenced the hardness of the various samples. Increasing the rotational speed to 225 rpm results in a fine microstructure. The sample with the highest mold rotation during fabrication has the highest hardness, around 113.60 HV, due to the smallest crystallite size and finer grain.

Keywords: light-weight- Al alloy- rotation- properties.

Topic: Material Physics