Residual stresses arise from the accumulation of misfit between the weld region and the remaining plate. There are a number of means by which the misfit, and hence the residual stresses, can be manipulated…. (W 133) (1)

Weld region = Região de solda

The Schaeffler diagram can be used to predict microstructure formation, in the transition region between the two dissimilar metals, under cooling conditions associated with arc welding. (W 18) (2)

Transition region = Região de transição

The micro-structural characteristics will first be discussed for the nugget region, in which deformation dominates. Evolution of microstructure in the heat affected zone is thermally controlled, and this will be discussed separately for non-heat-treatable and heat-treatable alloys. (W 133) (3)

Nugget region = Região da junta

(1) Friction stir welding of aluminium alloys

P L Threadgill1, A J Leonard2, H R Shercliff3 and P J Withers*4

1TWI, Granta Park, Great Abington CB21 6AL, UK

2BP International, Compass Point, 79-87 Kingston Rd, Staines, Middx TW18 1DY, UK

3Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK

4School of Materials, University of Manchester, Grosvenor Street, Manchester M1 7HS, UK

*Corresponding author, email philip.withers@man.ac.uk 

†Other terms have been used in the literature, namely ‘shear side’ and ‘flow side’, but these are ambiguous and have been discouraged.[4]

Paper presented at International Materials Reviews, vol.54. no.2. March 2009. pp. 49-93.

(2) Fusion Zone Microstructure Associated With Embrittlement Of Subsea Dissimilar Joints.

M. F. Dodge, H. B. Dong 

Department of Engineering, University of Leicester, Leicester, UK.

M. F. Gittos, T. Mobberley 

TWI Ltd. Great Abington, Cambridge, UK

Presented at Proceedings of the 33rd International Conference on Ocean, Offshore and Arctic Engineering OMAE2014 June 8-13, 2014, San Francisco, CA, USA.

(3) Friction stir welding of aluminium alloys

P L Threadgill1, A J Leonard2, H R Shercliff3 and P J Withers*4

1TWI, Granta Park, Great Abington CB21 6AL, UK

2BP International, Compass Point, 79-87 Kingston Rd, Staines, Middx TW18 1DY, UK

3Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK

4School of Materials, University of Manchester, Grosvenor Street, Manchester M1 7HS, UK. Paper presented at International Materials Reviews, vol.54. no.2. March 2009. pp. 49-93.