Pengaruh Normalisasi pada Suhu 850oC dengan Waktu Tahan 20 Menit terhadap Struktur Mikro dan Kekerasan Brinell Besi Cor Putih

Arkham, Harir and , Ir. Agung Setyo Darmawan, S.T., M.T. (2024) Pengaruh Normalisasi pada Suhu 850oC dengan Waktu Tahan 20 Menit terhadap Struktur Mikro dan Kekerasan Brinell Besi Cor Putih. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

In the world of the metal casting industry, we often hear about a type of cast iron called white cast iron. White cast iron is a type of cast iron that does not have a graphite phase so it has very hard and brittle mechanical properties. This research aims to determine the effect of normalization at a temperature of 850°C with a holding time of 20 minutes on the microstructure and Brinell hardness. Metallographic testing and composition testing were carried out using Scanning Electron Microscope – Energy Dispersive X-ray Spectroscopy (SEM�EDS), while hardness testing was carried out using the Brinell method based on ASTM E10. The results of SEM-EDS testing show that white cast iron that has undergone a normalization process contains graphite, cementite (Fe3C) and pearlite phases. In the graphite phase there are Carbon (C) elements of 71.5% by weight, Ferro (Fe) by 26.1% by weight, and Oxygen (O) 2.4% by weight. Then in the cementite phase (Fe3C) there are Ferrous elements (Fe) amounting to 91.4% by weight, Carbon (C) by 8.6% by weight, and Oxygen (O) by 0%. And in the ferrite phase there is the Ferro (Fe) element at 91.49% by weight, Silicon (Si) at 2.1% by weight and followed by the Carbon (C) element at 5.4% by weight and the Oxygen (O) element at 1% by weight.The results of hardness testing show that the highest hardness value occurs in raw material with a value of 474.163 BHN. Meanwhile, the lowest hardness value occurred in the normalized test specimen with an average hardness value of 442.63 BHN.

Item Type:	Thesis (Skripsi)
Uncontrolled Keywords:	Besi cor putih, struktur mikro, kekerasan brinell, normalisasi
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > S1 Teknik Mesin
Depositing User:	HARIR ARKHAM
Date Deposited:	20 Jan 2024 04:43
Last Modified:	20 Jan 2024 04:43
URI:	http://eprints.ums.ac.id/id/eprint/119808

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