Abstract
The tensile behavior of the DyBa 2Cu 3O 7− δ (DyBCO) coated conductor with MgO buffer layer deposited on the Hastelloy C-276 substrate by inclined substrate deposition (ISD) was studied. The tensile stress–strain curve showed a flat region, characterized by the discontinuous yielding of the substrate due to the Lüders band extension from the gripped portions of the sample. In the area where the Lüders band had passed, the coating layer showed severe multiple transverse cracking due to the localized plastic deformation of the substrate. The flaking off of the coating layers took place at high applied strain, due to the buckling fracture of the coated layers in the sample width direction, accompanied by the interfacial debonding.
Published Version
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