Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 219, Issue -, Pages 271-277Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2014.12.027
Keywords
Friction stir welding; Aluminum alloy 6061-T6; Surface quality; Weld strength; Defect formation; Additive-manufactured tooling
Funding
- Material and Processes Branch at NASA Johnson Space Center
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Six unique tool shoulder designs were produced with the objective of improved metal constraint and flow to the pin. The six tools were made of Ti-6AI-4V by metallic additive manufacturing. Each tool was used to produce butt welds using aluminum 6061-T6 plates. The welds were subjected to nondestructive evaluation and tensile testing to determine weld soundness and strength. A FSW tool shoulder having a raised spiral design produced the weld with the best combination of surface quality and mechanical properties. The additive-manufactured Ti-6AI-4V tooling had good wear characteristics and appears to be a suitable route to rapidly produce unique FSW tool designs. (C) 2015 Elsevier B.V. All rights reserved.
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