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| Abstract No.: |
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Scheduled at:
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Tuesday, March 21, 2017, Hall Ford 4:10 PM
Innovations I
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| Title: |
Effect of beam oscillation pattern on the properties of AZ31 magnesium alloys weld joints properties
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| Authors: |
Miroslav Sahul* / Slovak University of Technology in Bratislava /
Faculty of Materials Science and Technology in Trnava, Slovakia
Martin Sahul / Slovak University of Technology in Bratislava / Institute of Production Technologies, Slovakia
Jozef Bárta/ Slovak University of Technology in Bratislava / Institute of Production Technologies, Slovakia
Lubomír Caplovic/ Slovak University of Technology in Bratislava / Institute of Materials Science, Slovakia
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| Abstract: |
Magnesium alloys are currently of great importance as the promising materials for automotive and airspace industries from the weight reduction point of view. Thus, electron beam welding was performed in order to join AZ31 magnesium alloy in butt joint configuration. Different electron beam oscillation patterns were tested. PZ EZ 30 STU electron beam welding machine with the maximum accelerating voltage of 60 kV was used for production of weld joints. The quality of the butt weld joints was assessed in terms of weld morphology, microstructure and microhardness measurements. Furthermore, crystallography of welds was examined using electron backscatter diffraction (EBSD). Quality, size and orientation of precipitates present in the fusion zone was also determined. Differences between properties of weld joints produced without beam oscillation and with beam oscillation are discussed. The results showed, that electron beam welding with beam oscillation improved the weld morphology.
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