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Joining Metals by Combining Mechanical Stirring and Thermomechanical Treatment to Form a Globular Weld Structure

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Abstract:

A method for joining metals in the semisolid state is presented. A model alloy Sn-15%Pb was used to demonstrate the concept. By presented process, dendritic microstructure of the weld zone can be avoided. Moreover, near-weld zone of the cold worked substrates which is affected by heat would have a globular structure due to a thermomechanical treatment. The two substrates were heated up locally in the joint line to the semisolid temperature range. At this point a stirrer was introduced into the weld seam in order to mix the two sides into a single uniform joint. Localized mechanical properties of different zones were examined using Shear Punch Test (SPT), showing a good strength in the weld zone and thermomechanically affected zone.

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Periodical:

Solid State Phenomena (Volumes 116-117)

Pages:

397-401

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.116-117.397

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Online since:

October 2006

Authors:

B. Shalchi Amirkhiz, Hossein Aashuri, Amir Hossein Kokabi, M. Abbasi Gharacheh, Javad Mola

Keywords:

Fine Stirrer, Localized Semisolid, Semi-Solid Joining, Sn-15%Pb, SPT, Thermomechanical Treatment (TMT)

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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