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Disk Laser Weld Brazing of AW5083 Aluminum Alloy with Titanium Grade 2

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Abstract

Disk laser weld brazing of dissimilar metals was carried out. Aluminum alloy 5083 and commercially pure titanium Grade 2 with the thickness of 2.0 mm were used as experimental materials. Butt weld brazed joints were produced under different welding parameters. The 5087 aluminum alloy filler wire with a diameter of 1.2 mm was used for joining dissimilar metals. The elimination of weld metal cracking was attained by offsetting the laser beam. When the offset was 0 mm, the intermixing of both metals was too high, thus producing higher amount of intermetallic compounds (IMCs). Higher amount of IMCs resulted in poorer mechanical properties of produced joints. Grain refinement in the fusion zone occurred especially due to the high cooling rates during laser beam joining. Reactions at the interface varied in the dependence of its location. Continuous thin IMC layer was observed directly at the titanium–weld metal interface. Microhardness of an IMC island in the weld metal reached up to 452.2 HV0.1. The XRD analysis confirmed the presence of tetragonal Al3Ti intermetallic compound. The highest tensile strength was recorded in the case when the laser beam offset of 300 μm from the joint centerline toward aluminum alloy was utilized.

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Acknowledgments

The paper was prepared under the support of VEGA Grant agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic and the Slovak Academy of Sciences, Projects No. 1/0876/15 and 1/1010/16. The authors would like also to thank financial assistance from the Slovak University of Technology Grant scheme for the support of excellent teams of young researchers, Project No. 1347. The publication is also the result of the project implementation: CE for development and application of advanced diagnostic methods in processing of metallic and nonmetallic materials—APRODIMET, ITMS:26220120048, supported by the Research & Development Operational Programme funded by the ERDF.

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  1. Department of Welding and Foundry, Institute of Production Technologies, Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, J. Bottu 25, 917 24, Trnava, Slovak Republic

    Miroslav Sahul & Maroš Vyskoč

  2. Institute of Materials Science, Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, J. Bottu 25, 917 24, Trnava, Slovak Republic

    Martin Sahul, Ľubomír Čaplovič & Matej Pašák

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  1. Miroslav Sahul
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Correspondence to Miroslav Sahul.

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Sahul, M., Sahul, M., Vyskoč, M. et al. Disk Laser Weld Brazing of AW5083 Aluminum Alloy with Titanium Grade 2. J. of Materi Eng and Perform 26, 1346–1357 (2017). https://doi.org/10.1007/s11665-017-2529-6

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  • DOI: https://doi.org/10.1007/s11665-017-2529-6

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