Abstract
In this work, multi-layer and multi-pass 5183 Al alloy laminated parts were effectively prepared by a cold metal transfer arc welding machine and 5183 Al alloy wire, and the effects of thermal history on the microstructure and properties of multi-layer and multi-pass 5183 Al alloy laminated parts in vertical and horizontal directions were studied. The results showed that few large pores with low porosity were present in the multi-layer and multi-pass 5183 Al alloy forming parts. The pores, small and evenly distributed, existed between the remelting zone and the sedimentary layer. Further, rod-like second phase and the flake-like second phase were the crystal structure of Al6Mn, and both of them belonged to the Al6Mn phase. The yield strength and tensile strength of the vertical sample was 125.585 and 286.293 MPa, respectively, while for the horizontal sample, these were 122.532 and 280.02 6 MPa, respectively. The fracture elongation of the vertical specimen was 20.709% and of the horizontal specimen was 25.369%.
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Acknowledgments
The authors acknowledge funding for this research from National Natural Science Foundation of China (52065032), Key Research and Development Project of Yunnan Province and International Science and Technology Cooperation Project (202103AF140004), Basic research project of Yunnan Province (202101AT070123), Science Foundation of Kunming University of Science and Technology (202202AG050011-2), Ten Thousand Talent Program of Yunnan Province (YNWR-QNBJ-2019-106), This work is supported by the National and Local Joint Engineering Laboratory of Advanced Metal Solidification Forming and Equipment Technology, and Analytic and Testing Research Centre of Yunnan, Kunming University of Science and Technology, Kunming, China.
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Li, L., Peng, Y., Xu, B. et al. Investigation on the Microstructure and Mechanical Properties of Multi-layer and Multi-pass Al Alloy Deposition Based on Cold Metal Transfer Technology. J. of Materi Eng and Perform (2024). https://doi.org/10.1007/s11665-024-09688-w
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DOI: https://doi.org/10.1007/s11665-024-09688-w