Analisis Pengaruh Bahan PIN terhadap Sifat Mekanik dan Struktur Mikro Sambungan Plat Aluminium pada Proses Friction Stir Welding

Aluminum material (Al) and both have been widely used in the industrial sector. Welding in this study uses aluminum material and welding using friction stir welding. Twisted friction welding technology is a potential alternative to be applied to aluminum. This study aims to determine the mechanical properties and microstructure of aluminum plate joints in the friction stir welding process. with a variety of pin material. In this welding study the parameters used are the rotational speed of 2280rpm, feed speed of 60 mm / minute. The pin material uses AISI 4340 steel, AISI O1 and AISI D2. In this study, the X8140A model of the brand Richon vertical freis machine was used and the connection using a butt joint, by looking at the analysis of the strength of the weld results compared to other welding. The results of this test show that the maximum welding tensile stress using the AISI 4340 tool joint is 78.01 Mpa and the maximum strain using the AISI D2 tool joint is 22.51%. Hardness testing in the stir zone area all experienced an increase in hardness value compared to base metal and HAZ regions. Microstructure testing on the stir zone area showed smaller and finer grain sizes compared to the HAZ and base metal regions, so that the stir zone area had a higher hardness value than the HAZ and base metal regions