Analisa Scanning Electron Microscope (SEM) Hasil Spot Welding Aluminium (Al) Seri 1100 Dengan Penambahan Serbuk Tembaga (Cu) Mesh 40

Nugroho, Prihatmoko Adhi and , Ir. Pramuko Ilmu Purboputro, MT. (2021) Analisa Scanning Electron Microscope (SEM) Hasil Spot Welding Aluminium (Al) Seri 1100 Dengan Penambahan Serbuk Tembaga (Cu) Mesh 40. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

This study aims to determine the effect of adding copper with a mesh size of 40 on 1100 aluminum spot welding. The research conducted was SEM (Scanning Electron Microscope) test, hardness test, and microstructure test. The spot welding process applies a current of 9500A with a time of 7,5s. In cutting the spesimen, the ASME QW-462.9 standard was used, and the micro Vickers hardness test was used the ASTM E 384 standard. The results of the SEM and EDX tests show that the copper filler can enter the aluminum area which has cavities. However, there are some defects that occur such as porosity, cracks, and voids. As for the EDX results, there are several compositions of the welding results, namely Al = 15.12%, Cu = 51.61%, C = 17.78%, Na = 15.50%. The results of the research on the hardness test showed that the highest hardness value was in the nugget area of 48.99 VHN, then in the HAZ area of 40.23 VHN, and the last one was in the bae metal of 37.08 VHN. Then on the results of the microstructure test in the nugget area, there are fine grains compared to the HAZ and base metal areas.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	Las titik, Aluminium, Tembaga, SEM, Kekerasan, Struktur mikro.
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	PRIHATMOKO ADHI NUGROHO
Date Deposited:	15 Nov 2021 02:01
Last Modified:	15 Nov 2021 02:01
URI:	http://eprints.ums.ac.id/id/eprint/95643

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