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The welding was one of the technologies to manufacture manned cabin, which was a significant part of the submersible. To improve the procedure, horizontal EBW was employed on TC4 ELI alloy with 60mm thickness, and the microstructures and properties of the joints were investigated. The crystals and microstructures of the welds were homogeneous from the top to bottom, and the microhardness of the weld...
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