Friction stir welding of aluminum to copper—An overview

Friction stir welding (FSW) joins the material in solid state, and it gets evolved as a new and effective technique to join dissimilar materials such as aluminum and copper. FSW tool design and con...

Material stirring during FSW of Al–Cu: Effect of pin profile

The joining of a strong and a light metal such as; steel and magnesium alloys (Mg alloys) is much-needed demand for reducing the weight of the vehicles and other structures in various engin...

Parametric effect on dissimilar friction stir welded steel-magnesium alloys joints: a review

Friction stir welding process is one of the solid-state welding processes, which is suitable to weld a range of similar and dissimilar material combinations by moving a shouldered, rotating tool al...

Acoustic emission–based monitoring approach for friction stir welding of aluminum alloy AA6063-T6 with different tool pin profiles

Welding equality and mechanical properties of aluminum alloys joints prepared by friction stir welding

Friction stir welding (FSW) is a novel solid state welding process for joining metallic alloys and has emerged as an alternative technology used in high strength alloys that are difficult to join with conventional techniques. The applications of FSW process are found in several industries such as aerospace, rail, automotive and marine industries for joining aluminium, magnesium and copper alloys. The FSW process parameters such as rotational speed, welding speed, axial force and attack angle play vital roles in the analysis of weld quality. The aim of this research study is to investigate the effects of different welding speeds and tool pin profiles on the weld quality of AA6082-O aluminium. This material has gathered wide acceptance in the fabrication of light weight structures requiring a high strength-to-weight ratio. Tri-flutes and taper screw thread pin are used as tool pin profiles in this research. The appearance of the weld is well and no obvious defect is found using these tools. Consequently, the obtained results explain the variation of stress as a function of strain and the effect of different welding speed and pin profiles on yield strength ultimate tensile strength and elongation. The friction stir welded plates of AA6082-O by using the taper screw thread pin profile reaches the ultimate tensile strength of 92.30% of the base metal ultimate strength and % elongation of 27.58%.

Keywords: Friction stir welding, AA6082-O aluminium alloy, welding speed, mechanical properties

/pdf/experimental-study-on-the-effect-of-welding-speed-and-tool-5sbm6l5isc.pdf

Experimental study on the effect of welding speed and tool pin profiles on AA6082-O aluminium friction stir welded butt joints

Tribological performance based machinability investigations of Al2O3-ZrO2 ceramic cutting tool in dry machining of Ti-6Al-4V alloy

Gas tungsten arc welding (GTAW) is important in those manufacturing where it is significant to control the mechanical and metallurgical characteristics and its weld bead geometry. This work has been committed to study the influence of oxide fluxes on welding of 4 mm thick 304 austenitic stainless steel plates. The Al2O3 and TiO2 were used as an oxide flux in powder form and are mixed with the acetone. The prepared mixture is applied on bead plate without any joint preparation and without filler wire addition. The Taguchi method with L9 orthogonal array is used to determine the optimal parameters. The current work aims to explore the influence of weld parameters on weld bead geometry (i.e. weld bead width, penetration and angular distortion), and mechanical & metallurgical characteristics for 304 stainless steel welds. The oxide flux seems to narrow the arc and thereby the current density increases at the anode spot, that results in high weld depth.

H.S Patil

Papers

Experimental study on the effect of welding speed and tool pin profiles on AA6082-O aluminium friction stir welded butt joints

Tribological performance based machinability investigations of Al2O3-ZrO2 ceramic cutting tool in dry machining of Ti-6Al-4V alloy

Al2O3 and TiO2 flux enabling activated tungsten inert gas welding of 304 austenitic stainless steel plates