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The contribution of 211 particles to the mechanical reinforcement mechanism of 123 superconducting single domains

J. -P. Mathieu·I. G. Cano·T. Koutzarova·A. Rulmont·Ph. Vanderbemden·D. Dew-Hughes·M. Ausloos·R. Cloots
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Abstract

Hardness and fracture toughness of Dy-123 single-domains were studied by Vickers micro-indentation. A significant anisotropy of the mechanical properties was observed. Hardness tests give higher values when performed in (001) planes rather than in planes parallel to the c-axis. Moreover cracks pattern around the indentation follows preferential orientation in planes parallel to the c-axis whereas a classical ''four-cracks'' pattern is observed in the (001) planes. It has been possible to show the crucial role played by the 211-particles in the deviating mechanism of cracks and the relevance of the 211-particle distribution high homogeneity in the material.

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J. -P. Mathieu, I. G. Cano, T. Koutzarova, A. Rulmont, Ph. Vanderbemden, D. Dew-Hughes, M. Ausloos, R. Cloots. 2003-10-03. The contribution of 211 particles to the mechanical reinforcement mechanism of 123 superconducting single domains. https://doi.org/10.1088/0953-2048%2F17%2F1%2F030

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