Effect of work material combination and welding speed in dissimilar friction stir welding of aluminium to steel. (2022)

• Record Type: Journal Article
• Authors: Datta, Abhijit; Shrivastava, Ankit; Chakraborty, Shitanshu Shekhar; Pal, Surjya Kanta
• Is Part Of: Materials today. Volume 66:Part 9(2022)
• Page Start: 3729
• Page End: 3737
• Publication Date: 2022
• Subjects: FSW -- Dissimilar joining -- Welding speed -- Joint strength; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2022.05.558
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Effect of welding speed on strength and ductility of the friction stir butt welded assemblies formed with two different combinations of sheet metals viz. AA 1100 – AISI 304 and AA 7075 – AISI 304 was investigated. The experiments were conducted on a 30 kN CNC friction stir welding machine with the help of a tool made of H13 steel having a tapered cylindrical pin. Finite element simulation of approximated heat transfer model was conducted to check the effect of tool offset on distribution of temperature in aluminium and steel. Ultimate tensile strength and percentage elongation at break of weld metals decreased with the rise of welding speed. Microstructural characterization was carried out to investigate the reasons of poor joint efficiency obtained.