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Tensile fracture at room temperature and the faying microstructures of vacuum casting Cu-30CrTe, Cu-30Cr and sintered CuCr25 contact materials after diffusion welding in vacuum were evaluated by Optical Microscope and SEM. It is shown that there are different fracture characteristics in the three contact materials, and distinct microstructures formed at the faying surface of the Cu-30CrTe from that...
Diffusion welding tests of vacuum casting Cu-30Cr, Cu-30CrZr, Cu-30CrTe and Cu-30CrZrTe alloy contact materials as well as sintered CuCr25 p/m contact materials were performed in the vacuum chamber of Gleeble 3500, and the joining forces of the welded pairs were measured by tensile test at ambient temperature. Characteristics of fracture surfaces were analyzed by optical microscope and SEM. It shows...
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