TWI Digital Library

Corner "Friction Stir Welding" technology is beneficial for T-joints in a variety of products, including aluminum aircraft. Although a stationary shoulder device and Corner Stationary Shoulder FSW (CSS-FSW) are promising technology to realize T-join…

This study investigates the impact of process parameters on FSW of AISI 304 stainless steel hemispheres of various diameters without internal support. Optical microscopy was employed to investigate joint macrostructure, defect formation, and weld pe…

The linear friction welding of carbon steel using low frequency and low amplitude so as to weld below the A1 transformation temperature and so avoid martensitic transformation was investigated. The end faces of JIS-S45C carbon steel (0.48%C, 0.77%Mn…

The use of a new tool material, polycrystalline cubic boron nitride (PCBN), developed by Brigham Young University in association with Advanced Metal Products, for friction stir welding (FSW) high-temperature materials was investigated. The manufactu…

A friction bit joining (FBJ) process was developed to facilitate spot joining of dissimilar metals and the microstructure and mechanical properties of the welded joints were investigated. The material system considered comprised sheet specimens (thi…

Friction stir welding experiments were undertaken on carbon manganese steel plates (thickness 6 mm) in order to map the internal temperature distribution, assess the effects of minimal plate preparation and investigate the microstructures and mechan…

The microstructure, crystallographic texture and grain distribution were determined in a transverse cross section of a friction stir weld and in a plan-view section through the embedded friction stir welding (FSW) tool. The weld was obtained by FSW …

An experimental investigation was undertaken to examine the effect of a TIG welding torch assisted heating source on the microstructure, mechanical properties and fracture mechanism of dissimilar Cu/austenitic stainless steel butt joints fabricated …

Following a brief overview of the state of the art and applications for FSW of aluminium and Al alloys, experience and activities with this process at TWI Ltd (UK) are introduced. Principles, advantages and applications are presented of some process…

Friction stir welding (FSW) experiments were undertaken on AA 5083 aluminium alloys to investigate the influence of process parameters (rotational and travel speeds) and preheating temperature on abnormal grain growth after PWHT. The experimental sp…

The microstructure, mechanical properties and fatigue behaviour of friction stir welded (FSW) and MIG welded butt joints in aluminium alloy 2519-T87 (Al, 5.3-6.4%Cu, 0.1-0.5%Mn, 0.02-0.1%Ti) plate of 25.4 mm thickness were compared. Friction stir we…

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%…

The influence of tool geometry and process conditions on the lap shear strength, weld integrity and efficiency during friction stir spot welding of magnesium alloys for automotive applications was investigated. The macro- and microstructures and wel…

An investigation was carried out in order to examine the feasibility of producing friction stir welded FSW T-joints using the corner fillet geometry. A specific tool comprising a rotating pin (made of MP159) with a 45 degree inclination to the two p…

A description is presented on the friction stir welding (FSW) equipment developed for the joining of thin gauge complex-contour aluminium structures for the construction of the Eclipse 500 twin-engine jet aircraft. The design and capabilities of the…

Tensile tests, computed tomography and documentation of process forces were employed to investigate the weldability of 1.4310 austenitic stainless steel reinforced extruded AW-6060 alloy (Al, 0.35-0.6%Mg, 0.6%Si) by friction stir welding, and the re…

The hybrid friction stir channelling (HFSC) technique was employed to produce, in one action, a channel and a joint between dissimilar thickness overlapping Al plates and dissimilar Al-Cu plates, and the microstructural and geometrical features of t…

The tolerance of operational accuracy and optimum tool control in 3D friction stir welding (FSW) was investigated in relation to joint mechanical properties. A five-axis controlled FSW machine was developed for 3D welding. The material studied was a…

With regard to the dependence of welded joint properties on tool probe shape during friction stir welding (FSW) of dissimilar butt joints between aluminium and steel, an investigation was undertaken into the interface formation mechanism by conducti…

The friction stir welding of dissimilar aluminium alloys for the production of aircraft structural components was investigated. Welds were made between alloys 7040 and 7449 pre-aged to obtain a defined temper after post-weld ageing. Alloy 7040 was a…