TWI Digital Library

Friction stir welding (FSW) of 2219-T6 aluminium alloys (Al, 6.48%Cu) was undertaken with the assistance of micro-plasma arc preheating, and welding efficiency as well as joint microstructure and mechanical properties were investigated. Longitudinal…

Dissimilar joints between 2017A-T451 (Al, 4.14%Cu, 0.72%Mg, 0.68%Si) and AlSi9Mg (Al, 8.6%Si, 0.64%Fe, 0.34%Mn, 0.31%Mg) aluminium alloys were fabricated by a friction stir welding process featuring different rates of rotation of the pin and shoulde…

The friction stir disc welding (FSDW) process was developed to facilitate the production of high quality root welds, and the joint formation mechanism and the influence of tool rotation direction on joint properties were investigated. The FSDW set-u…

Use of friction stir welding (FSW) to replace mechanical fastening in fabrication of an aircraft component in the ROCT Project (Rib One with Crux and Tees) is described. Design is shown of the part, which was assembled using four butt welds from wro…

A review is presented of the growth in interest in friction stir welding (FSW) as measured by real industry applications and the distribution of related patent filings by time and geography, and case studies are reported to illustrate commonly occur…

The effects of post weld heat treatments on the mechanical properties and corrosion resistance of friction stir welded dissimilar aluminium alloy joints (2024/6056) were studied. Sheets of 4 mm thickness were first joined in heat treatments T3 for 2…

Friction stir welding of aluminium alloy JIS-6N01-T5 (Al, 0.4-0.8%Mg, 0.4-0.9%Si) was investigated for subway [underground railway] rolling stock applications by comparing the welded joint properties with those of MIG and laser welded joints. Sheet …

Forces experienced by the pin and the workpiece during friction stir welding were measured and used to design a friction stir welding machine which would accept a curved workpiece fed through the machine by hand. Forces in three perpendicular direct…

Friction stir welding (FSW) was employed to weld Mo and Ti sheets (thickness 1.5 and 2 mm, respectively), the effects of process conditions on weldability as well as mechanical properties and microstructure of joints was investigated, and the import…

Friction stir welding of UK Ministry of Defence Def Stan 95-22 7017 aluminium alloy (Al, 4.5%Zn, 2.0%Mg) armour plate was evaluated by studying the mechanical properties and cracking of welded joints. Initially plate of 10 mm thickness, locally redu…

The StiRoLight Research project (carried out in conjunction with SAAB, ESAB and Volvo) to investigate the use of an industrial robot for friction stir welding of aluminium alloys in the automobile industry, is outlined and studies of path deviations…

Friction stir welding (FSW) experiments were conducted on Ti-6%Al-4%V (Ti, 6.32%Al, 4.08%V) and SP-700 (Ti, 4.37%Al, 2.93%V, 1.91%Fe, 1.9%Mo) alloy sheets (thickness 2 mm) in order to investigate the effect of process conditions on joint microstruct…

Two abutting plates (thickness 6 mm) of Al 6061-T6 and cold rolled AISI 1018 mild steel were friction stir welded along the butt joint with the steel and aluminium, respectively, on advancing and retreating sides, and the relationship between proces…

A two-run friction stir welding process was employed to fabricate butt joints in API 5L X80 pipeline steel (0.08%C, 1.86%Mn, 0.16%Cr, 0.01%Ni, 0.18%Mo, 0.03%V, 0.06%Nb) plates (thickness 12 mm) and fracture toughness was determined in the parent met…

With regard to the development of aluminium military vehicles, a report is presented into production level single run friction stir welding (FSW) process parameters for thick plate samples (thickness 12.7-40.6 mm) of 5083, 5059 and 2139 aluminium al…

Friction stir lap welding of aluminium alloy to magnesium alloy was investigated, emphasising the tensile strength, fracture location in the joint and microstructure evolution in the weld under different welding heat inputs. Dissimilar joints betwee…

Friction stir welded joints in 2024-T351 Al-Cu-Mg alloy were subjected to fatigue testing to evaluate the suitability of this welding process for aircraft manufacture. Aluminium alloy (Al, 3.8-4.9%Cu, 1.2-1.8%Cu, 0.5%Si, 0.5%Fe, 0.2%Zr) of 6.35 mm (…

Friction stir welding experiments were undertaken on commercial SPF (superplastic forming) AA 5083-H19 (Al, 4.43%Mg) and AA 2004 (Al, 6.05%Cu) aluminium alloys, and the effects of tool size, geometry and primary process variables on microstructure a…

Friction stir welding (FSW) experiments were undertaken on Cr-containing carbon steels (0.22%C, 0.5%Mn, 0-4%Cr) and the influence of Cr content on joint microstructure and mechanical properties was investigated. FSW was conducted at a tool rotationa…

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…