TWI Digital Library

Dissimilar butt joints between A516 steel (0.15%C, 0.95%Mn, 0.03%Cr, 0.01%Ni, 0.29%Al) and Inconel 625 (Ni, 22.6%Cr, 9.4%Mo, 3.5%Nb) were fabricated by friction stir welding and recrystallisation and texture properties were investigated. Welding was…

This study addresses the challenges of predicting joint efficiency for friction stir welding (FSW). It adopts a data driven approach, leveraging data analytics to develop accurate predictive models. A database of 1780 records from diverse aluminium …

3-point fatigue bending tests and finite element method simulations were employed to study the fatigue performance of combined lap-butt joints fabricated by friction stir welding in 6005A-T6 alloy (Al, 0.61%Si, 0.54%Mg) extruded profiles for railway…

Dissimilar overlap joints between different aluminium alloys were fabricated by friction stir welding (FSW) and the influence of alloy composition and FSW tool type on fatigue fracture, microstructure and mechanical properties was investigated. The …

Several kinds of Co-based alloys with different mechanical properties (e.g. high temperature strength, hardness, wear resistance and gamma-solvus temperature) were designed for friction stir welding (FSW) tool applications by varying chemical compos…

Flame resistant AZX 612 (Mg, 6%Al, 1%Zn, 2%Ca) magnesium alloy joints were fabricated by asymmetric double sided friction stir welding (FSW) and the influence of tool rotational speed on their microstructure and mechanical properties was investigate…

The results of quality assessments, based on visual examination, mechanical testing, analysis of weld structures and hardness testing, of both similar and dissimilar friction stir welded (FSW) joints of aluminium casting alloys EN AC-42100, EN AC-43…

Square butt welds of AA 7075-T6 sheet (thickness 1.3 or 3.2 mm) to AA 7075-T6 extrusions were fabricated by friction stir welding (FSW) procedures incorporating the controlled introduction of defects, and the impact of the defects on joint mechanica…

To assess the feasibility of friction stir welding of Ti-6Al-4V alloy (thickness 5 mm), appropriate pin tool material and processing parameters were determined, thermal and environmental management systems were tested, and both A- and B-basis design…

Two 3D numerical simulation models were employed to investigate the relationship between forces and torques during high-speed friction stir welding (FSW) with respect to mechanistic defect development owing to process parameter variations, and the t…

A friction stir welding (FSW) methodology, incorporating Taguchi quality engineering to optimise process parameters, was developed to fabricate a cold plate consisting of copper pipe embedded in the machined groove of a 6061 aluminium alloy base pla…

An investigation is presented into the use of temperature control in two friction stir welding (FSW) research projects: to understand the effect of backing plate conductivity on process parameters and to study the influence of active FSW tool coolin…

In relation to the development of corrosion barrier capsules for spent nuclear fuel disposal, friction stir welding experiments were conducted on oxygen-free copper plate specimens (thickness 20 mm) using different joint preparation, shielding gas a…

Preliminary results from a 3-dimensional heat and material flow computer simulation program for friction stir welding are given and compared with experimental observations. The simulation is based upon solutions of Navier-Stokes equations and nonlin…

The tensile and fatigue strength of friction stir welds were determined for aluminium alloy 6082 in various temper conditions. Plate of 5.8 mm thickness, in both T6 and T4 conditions, was welded using a tool speed of 1000 rev/min and a welding speed…

The effects of friction stir welding process parameters (tool rotation speed and travel speed) on defects and mechanical properties in welds in aluminium alloys were investigated. Microstructural, macrostructural and mechanical properties of the wel…

Friction stir spot welding experiments were conducted on dissimilar metal joints between AA5052 aluminium alloy and two kinds of steel (980 MPa high tensile strength steel and 270 MPa mild steel), and the microstructure and mechanical properties of …

Rotary friction welding was employed to fabricate joints between an ASTM A36 steel pipe (0.11%C, 0.2%Si, 0.92%Mn, 0.02%Cr, 0.02%Nb, 0.03%Al) and an API 6A flange and microstructural analyses and mechanical tests were undertaken to investigate the se…

5A06 aluminium alloy (Al, 6.8%Mg, 0.5%Mn) sheets (thickness 5.17 mm) were joined by friction stir welding (FSW) and the microstructure and mechanical properties of the welded joints were investigated. Welding was performed using a tool pin with a sc…

A friction stir welding (FSW) procedure using a W-Re alloy tool, magnetic welding fixture and a high-speed steel backing bar was developed for application to precipitation-hardened martensitic stainless steel (13.7%Cr, 7.1%Ni) thin sheet (thickness …