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Joining metals by combining mechanical stirring and thermomechanical treatment to form a globular weld structure

Amirkhiz, B. S ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.4028/3-908451-26-4.397
  3. Publisher: Trans Tech Publications Ltd , 2006
  4. Abstract:
  5. 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
  6. Keywords:
  7. Microstructure ; Strength of materials ; Temperature measurement ; Thermomechanical treatment ; Dendritic microstructure ; Localized semisolids ; Mechanical stirring ; Semisolid joining ; Welds
  8. Source: 9th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2006, Busan, 11 September 2006 through 13 September 2006 ; Volume 116-117 , 2006 , Pages 397-401 ; 10120394 (ISSN); 3908451264 (ISBN); 9783908451266 (ISBN)