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Evolution behavior of laser welding in hybrid structure between open-cell aluminum foam and solid aluminum shell

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Abstract

Hybrid structure between porous core and solid shell can combine lightweight open-cell structure of porous materials with good strength of solid shell. Laser welding is considered as an effective process to join porous metal with solid metallic shell. In this study, the evolution behavior of laser welding by a continuous wave (CW) disk laser welding between open-cell aluminum alloy (cast AC2A alloy) and aluminum sheet (wrought AA6063 alloy) was investigated. X-ray transmission system and a high-speed camera were performed during laser welding to investigate the dynamic keyhole, porosity formation, plasma plume, and spatter formation. Laser keyhole became unstable during entering and passing the vacancies of porous aluminum, which consequently resulted in bubble formation in the molten pool.

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Acknowledgments

The authors would like to thank Dr. Sompong Srimanosaowapak from the National Metal and Materials Technology Center (MTEC) for the production of open-cell aluminum; Dr. Saowapak Thongvigitmanee from the National Electronics and Computer Technology Center (NECTEC), Thailand, for supporting the CT-Scan images; and Mr. Qinglong Pan, graduate student, for operating laser system at Joining and Welding Research Institute (JWRI), Osaka University.

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Authors and Affiliations

  1. National Metal and Materials Technology Center, National Science and Technology Development Agency, Rangsit, Pathum Thani, 12120, Thailand

    Paiboon Wattanapornphan & Chakkrist Phongphisutthinan

  2. Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka, 567-004, Japan

    Tetsuo Suga, Masami Mizutani & Seiji Katayama

Authors
  1. Paiboon Wattanapornphan
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  2. Chakkrist Phongphisutthinan
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  3. Tetsuo Suga
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  4. Masami Mizutani
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  5. Seiji Katayama
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Correspondence to Chakkrist Phongphisutthinan.

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Wattanapornphan, P., Phongphisutthinan, C., Suga, T. et al. Evolution behavior of laser welding in hybrid structure between open-cell aluminum foam and solid aluminum shell. Weld World 65, 263–274 (2021). https://doi.org/10.1007/s40194-020-01022-x

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  • DOI: https://doi.org/10.1007/s40194-020-01022-x

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