TWI Digital Library

Friction stir welding (FSW) was employed to fabricate butt joints in AW 5083 (Al, 4-4.9%Mg, 0.4-1%Mn) aluminium alloy plates (thickness 10 mm) and the influence of process parameters and tool geometry on the character and quality of welded joints wa…

A friction stir channelling process to promote a distinct material flow was developed, in which a controlled amount of viscoplasticised material from the metal workpiece flows out from the processed zone producing an internal channel without any gap…

A Taguchi design of experiments approach was employed to investigate the effect of varying process parameters (rotational speed, welding time and plunge depth) on process data for refill friction stir spot welding of AA 6082-T6 aluminium alloys. The…

An experimental investigation was undertaken to study the effects of different pin profiles (threaded conical, square, pentagon and hexagon) and the same process parameters on temperature distribution around the tool and resulting microstructure dur…

A friction stir spot welding (FSSW) process was employed to fabricate dissimilar joints between an AA 5754 aluminium alloy and an AZ31 magnesium alloy in a lap joint configuration using a Zn layer at the interface to suppress intermetallic formation…

Friction stir processing (FSP) was employed to fabricate oxide dispersion strengthened copper-based composite plates with a graded microstructure and evolving mechanical, thermal, electrical and wear properties along their thickness. Specimens compr…

The use of semi-friction stir processing to improve the facing surface layer of flange joints in casings of high-voltage switchgears, filled with electro-insulating SF6 gas, was examined. The influence of tool shape and size, and welding parameters …

A geometric feature, termed the "Wiper", was developed to improve the weld track surface finish produced by friction stir welding (FSW) and processing tools with scrolled shoulders, and experiments were undertaken to investigate the influence of "Wi…

An experimental investigation was undertaken to study the effects of different pin profiles (threaded conical, square, pentagon and hexagon) and the same process parameters on temperature distribution around the tool and resulting microstructure dur…

WC, 12%Co cemented carbide layers were deposited onto M2 tool steel (0.8-0.88%C, 3.8-4.5%Cr, 4.7-5.2%Mo, 5.9-6.7%W, 1.7-2.1%V) substrates by HVOF spraying and the effect of subsequent friction stir processing (FSP) on bonding strength and cermet coa…

Dissimilar lap joints between 2024-T3 aluminium alloy (Al, 4.6%Cu, 1.3%Mg, 0.56%Mn) and Ti-6Al-4V titanium alloy (Ti, 6.21%Al, 3.99%V) were fabricated by friction stir welding (FSW) and the influence of process parameters on hook shape and surface r…