Citation: | XU Liang, LI Kangning, YANG Haifeng, SONG Kunlin, GU Shiwei. Effect of microtexturing characteristics on the performance of laser welded aluminum alloy-CFRTP joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2024, 45(2): 75-81. DOI: 10.12073/j.hjxb.20230915001 |
The effect of laser texturing on the performance of aluminium alloy-CFRTP laser welded joints was studied and the strengthening mechanism of laser texturing was analyzed. The results showed that the laser surfi-sculpt could be used to build texturing on the surface of aluminium alloys to obtain well-formed and high performance aluminium alloy-CFRTP laser welded lap joints, and the joint achieved tightly embedding. With the increasing of the depth-width ratio of the laser texturing, the molten CFRTP in the texturing was changed from fully filled to partially filled, and the joint shear properties showed a trend of first increasing and then decreased, and the joint failure mechanism was changed from hybrid fracture (adhesive failure + cohesive failure), CFRTP base material fracture to hybrid fracture. The joint performance reached its maximum when the depth-width ratio reached 1.2 to 1.6, at which point the fracture location was located in the CFRTP base material. The strengthening mechanisms of the aluminium alloy-CFRTP joint by laser texturing were enhancing mechanical embedding and the "nailing" effect of splashing.
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