TWI Digital Library

An empirical process model to estimate tool shoulder temperature for different materials and friction stir welding (FSW) conditions is described that incorporates a design of experiments method and linear regression analysis (MATLAB software) with c…

Butt joints were fabricated in AA 6061-T6511 aluminium alloys by friction stir welding (FSW) and the influence of the welding equipment rigidity on their microstructure and mechanical properties was investigated. The experimental set-up incorporated…

Butt joints were fabricated in a Ruuki Optim 700 MC Plus microalloyed low carbon high strength complex phase steel (0.06%C, 1.79%Mn, 0.01%V, 0.08%Nb, 0.11%Ti) using one-sided and two-sided friction stir welding in order to investigate the difference…

Friction stir processing (FSP) experiments were undertaken on 7B04-O aluminium alloys (Al, 6.23%Zn, 2.88%Mg, 1.58%Cu) and the evolution of microstructure and mechanical properties in the stir zone was investigated. FSP was conducted using a tool mad…

Haynes Alloy 282 (Ni, 19.45%Cr, 10.28%Co, 8.55%Mo) was deposited onto Inconel 600 substrates (Ni, 16.69%Cr, 9.36%Fe) using a cold-wire TIG process, subjected to additive friction stir processing (AFSP) to create gamma-strengthened surface layers, an…

With regard to the capability of ultrasonic vibration enhanced friction stir welding (UVeFSW) to improve weld formation quality as well as the microstructure and mechanical properties of the welded joints, experiments were undertaken to clarify the …

An investigation is presented into bead-on-plate friction stir welding of type 304 austenitic stainless steel (18.1%Cr, 8.56%Ni) and the relationship between corrosion properties and weld microstructure. Microstructural observations were performed b…

Friction stir welding was employed to fabricate bead-on-plate welds on AA 6063 aluminium alloy sheets (thickness 5 mm) and dissimilar joints between AA 6063 and S45C carbon steel plates (thickness 6 mm), and the influence of weld shape on microstruc…

Similar and dissimilar joints between 2014-T6 (Al, 4.67%Cu) and 6061-T6 (Al, 0.9%Mg, 0.63%Si) aluminium alloys were fabricated by friction stir welding (FSW) with various sets of process parameters, and the microstructure and mechanical properties o…

An environmental comparison of friction stir welding (FSW) and MIG welding is presented in aluminium railway rolling stock for the following aspects: material consumption, energy consumption, work environment, emissions and waste, and need of transp…

The influence of pores and residual stresses on fatigue crack propagation was studied for friction stir welded joints in aluminium alloys 2024-T3 and 6013-T6 of thickness 4 mm. Good welds and pore-containing welds were produced using tools with and …

This study explores the microstructural evolution of AA6060 builds that were fabricated via the recently developed Friction Screw Extrusion Additive Manufacturing (FSEAM) approach, and the role of a subsequent post-manufacturing ageing heat treatmen…

A temperature monitoring system incorporating thermocouples mounted in the probe and shoulder was employed to measure the temperature of the rotating tool during the fabrication of dissimilar butt joints between A6005C aluminium alloy (Al, 0.5%Mg, 0…

The distortion, mechanical properties and microstructure of friction stir, submerged arc and GMA welds in HSLA-65 steel (0.09%C, 1.32-1.39%Mn, 0.01-0.06%Ni, 0.041-0.067%V, 0.03-0.035%Nb) and DH-36 steel (0.18%C, 0.90-1.60%Mn, 0.25%Cr, 0.40%Ni, 0.08%…

A discussion is presented on research studies carried out to develop friction stir welding (FSW) as a method for the production of thick (50.8-76.2 mm; 2-3 in) aluminium alloy 7050 tailored blanks suitable for use in the aerospace industry. Single r…

Additive friction surfacing (AFS) is a variant of friction surfacing (FS) where multiple layers of feedstock material can be deposited to generate a near-net shape part. AFS has the potential to yield significantly higher deposition rates than tradi…

Friction stir welded joints, produced in an extruded profile of aluminium alloy 6082-T6 using run on and run off plates, were evaluated by measurement of mechanical properties. Plate of 6 mm thickness was welded using a range of process parameters, …

AZ31 magnesium alloy sheets (thickness 4 mm) were joined by friction stir welding under process conditions with and without a heat sink, and the residual stress distribution in the joints was investigated by a hole drilling method according to the A…

AA 6061-T651 aluminium alloy (Al, 0.81%Mg, 0.53%Si) plates (thickness 9.5 mm) were joined by friction stir welding (FSW) and the influence of FSW tool eccentricity on material flow and welded joint mechanical properties was investigated. Welding was…

The influence of welding tool design on the microstructure of the interface and friction stir spot welded joint between aluminium alloy and low carbon steel was investigated. Two types of welding tool were evaluated: a tool comprising a probe and sh…