Microstructure And Mechanical Properties Of Friction Stir Welding On Aluminum AA1100 With Tool Pin Profile Paramater Nur Kholis (a), Helmy Purwanto (a*), Darmanto (a), Muhammad Faiz Fadhlillah (a)
a) Department of Mechanical Engineering , Faculty of Engineering, Universitas Wahid Hasyim, Semarang, Indonesia
*) helmypurwanto[at]unwahas.ac.id
Abstract
Friction Stir welding pin tool profile is very influential on the welding results. The profile of the pin tool is one of the important factors that affect the results of the weld, such as results on the microstructure and mechanical properties of the welded joints (nuggets). This study aims to analyze the effect of the tool pin profile on the friction stir welding of aluminum AA1100 on the microstructure and mechanical properties. The FSW process uses a Universal Milling Machine. Observation of macro photos using a USB Digital Microscope and observations of microstructure using optical metallography. Tensile testing using the Universal Testing Machine. The microstructure of the weld nugget which shows smooth and tight results occurs in FSW using the Threaded pin tool profile, the result is due to the even threaded pin stir and dynamic recrystallization. The maximum tensile strength results occur in the pin tool threaded with a value of 88,037 Mpa.Aluminum material is widely needed in the industrial world, but still has problems with its weldability, so it requires the right welding method. FSW can join aluminum materials with good weldability results. Welding in industries engaged in transportation, shipping, railroads, automotive, and construction.
