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Rahadian Nopriantoko
Universitas Krisnadwipayana
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Mechanical properties analysison FSW butt joint of aluminum alloy that applied in marine industries Rahadian Nopriantoko
Jurnal POLIMESIN Vol 20, No 2 (2022): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v20i2.3062

Abstract

 Friction Stir Welding (FSW) was promoted as a new welding method, cheap and eco-friendly welding with good quality joints. Aluminum Alloy is used widely in industries, including the marine industry. AA 5XXX and 6XXX series are materials used for shipping manufacture and offshore construction, because of their corrosive resistance and good strength properties after joining. Similar butt joint welding using the FSW method for a number of aluminum alloy series AA 5052, AA 5083, AA 6061, AA 6063. Welding samples were made using AWS standards and then given radiographic testing to determine the general condition of the welds. Then a tensile strength test was carried out using a ZwickRoell tensile testing machine and a hardness test using a microhardness Vickers Buehler with ASTM standards on the welding results to analyze the mechanical properties of the welded joint zone, as well as compare each result and get the ratio of the number of mechanical properties of the joint results the weld to the base material. After that, the results and discussion were obtained that the weld area showed different mechanical properties for each series of aluminum alloys. The value of the tensile strength, when compared to the tensile strength of the base metal, is around 60-75%, while the hardness value is around 75-80.6 HV for all the welded samples.  
Energy absorption and toughness analysis on FSW butt joint of AA 5052 and AA 5083 Rahadian Nopriantoko
Jurnal POLIMESIN Vol 21, No 4 (2023): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i4.4107

Abstract

Friction Stir Welding (FSW) is an efficient and effective welding method with good-quality welds. Aluminum Alloy (AA) has been widely used for various automotive needs, including in vehicle manufacturing. AA series 5XXX is a type of material used for vehicle manufacturing because it has good strength properties even after the joining process. A similar butt joint using the FSW method was carried out on material AA 5052 and AA 5083. The results of the welding were then given radiographic testing to determine the general condition of the welds. The impact test was carried out according to the procedures standard of ASTM on the welding results to analyze the energy absorption and toughness properties of welds by getting the impact value of the welded joint, and then looking for the quantity ratio to the impact value of the base material. After that, the results and discussion were obtained that the welded areas showed different impact strength and absorbed energy value, which is compared to the base material the range is below with a decrease in value of between 34% and 68% of the initial toughness strength of the parent material. The reduction in toughness strength can be attributed to the influence of mechanical properties during the welding process. Nevertheless, the welds demonstrated good quality and integrity, highlighting FSW's efficacy in joining aluminum alloys. This research significantly contributes to comprehending the energy absorption and toughness analysis of FSW butt joints in aluminum alloys, crucial for vehicle body technology applications.
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