The Experts below are selected from a list of 53193 Experts worldwide ranked by ideXlab platform
Rudi Cloots - One of the best experts on this subject based on the ideXlab platform.
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the contribution of 211 particles to the mechanical reinforcement mechanism of 123 superconducting single domains
Superconductor Science and Technology, 2004Co-Authors: J P Mathieu, I G Cano, T Koutzarova, A Rulmont, Philippe Vanderbemden, D Dewhughes, Marcel Ausloos, Rudi ClootsAbstract: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, the 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 high homogeneity of 211-particle distribution in the material.
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the contribution of 211 particles to the mechanical reinforcement mechanism of 123 superconducting single domains
arXiv: Superconductivity, 2003Co-Authors: J P Mathieu, I G Cano, T Koutzarova, A Rulmont, Philippe Vanderbemden, D Dewhughes, Marcel Ausloos, Rudi ClootsAbstract: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.
Y. Araki - One of the best experts on this subject based on the ideXlab platform.
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Effect on the grain interior and grain boundary reactions by Cr addition to low gold content alloys
Journal of Materials Science, 1995Co-Authors: Isao Kawashima, Hiroki Ohno, Y. ArakiAbstract:The effect on grain interior and grain boundary reactions by Cr addition to low gold content alloys were investigated by electric resistivity measurements, Hardness Tests, optical microscopic observations, and TEM observations. The grain interior reactions were accelerated by the chromium addition while grain boundary reactions were retarded. The formation of AuCu l type ordered phase in the grain interior was accelerated, and the T-T-T curve of AuCu l type ordered phase shifted to higher temperatures and shorter times with increasing chromium content.
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effects of pre ageing and cold working on grain interior and grain boundary reactions of ag pd cu alloys
Journal of Materials Science, 1993Co-Authors: Isao Kawashima, Y. Araki, Hiroki OhnoAbstract:The effects of pre-ageing and cold working on grain-interior and grain-boundary reactions of Ag-Pd-Cu alloys were investigated by electrical resistivity measurements, Hardness Tests, and optical microscopic observations. Hardness values of the grain interior after the final thermomechanical treatment increased 20%–30% above the values after conventional ageing. The Hardness values of alloys preaged at 400°C for 1 min and then cold worked at 30% are the highest (Hv=320).
Hiroki Ohno - One of the best experts on this subject based on the ideXlab platform.
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Effect on the grain interior and grain boundary reactions by Cr addition to low gold content alloys
Journal of Materials Science, 1995Co-Authors: Isao Kawashima, Hiroki Ohno, Y. ArakiAbstract:The effect on grain interior and grain boundary reactions by Cr addition to low gold content alloys were investigated by electric resistivity measurements, Hardness Tests, optical microscopic observations, and TEM observations. The grain interior reactions were accelerated by the chromium addition while grain boundary reactions were retarded. The formation of AuCu l type ordered phase in the grain interior was accelerated, and the T-T-T curve of AuCu l type ordered phase shifted to higher temperatures and shorter times with increasing chromium content.
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effects of pre ageing and cold working on grain interior and grain boundary reactions of ag pd cu alloys
Journal of Materials Science, 1993Co-Authors: Isao Kawashima, Y. Araki, Hiroki OhnoAbstract:The effects of pre-ageing and cold working on grain-interior and grain-boundary reactions of Ag-Pd-Cu alloys were investigated by electrical resistivity measurements, Hardness Tests, and optical microscopic observations. Hardness values of the grain interior after the final thermomechanical treatment increased 20%–30% above the values after conventional ageing. The Hardness values of alloys preaged at 400°C for 1 min and then cold worked at 30% are the highest (Hv=320).
Isao Kawashima - One of the best experts on this subject based on the ideXlab platform.
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Effect on the grain interior and grain boundary reactions by Cr addition to low gold content alloys
Journal of Materials Science, 1995Co-Authors: Isao Kawashima, Hiroki Ohno, Y. ArakiAbstract:The effect on grain interior and grain boundary reactions by Cr addition to low gold content alloys were investigated by electric resistivity measurements, Hardness Tests, optical microscopic observations, and TEM observations. The grain interior reactions were accelerated by the chromium addition while grain boundary reactions were retarded. The formation of AuCu l type ordered phase in the grain interior was accelerated, and the T-T-T curve of AuCu l type ordered phase shifted to higher temperatures and shorter times with increasing chromium content.
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effects of pre ageing and cold working on grain interior and grain boundary reactions of ag pd cu alloys
Journal of Materials Science, 1993Co-Authors: Isao Kawashima, Y. Araki, Hiroki OhnoAbstract:The effects of pre-ageing and cold working on grain-interior and grain-boundary reactions of Ag-Pd-Cu alloys were investigated by electrical resistivity measurements, Hardness Tests, and optical microscopic observations. Hardness values of the grain interior after the final thermomechanical treatment increased 20%–30% above the values after conventional ageing. The Hardness values of alloys preaged at 400°C for 1 min and then cold worked at 30% are the highest (Hv=320).
J P Mathieu - One of the best experts on this subject based on the ideXlab platform.
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the contribution of 211 particles to the mechanical reinforcement mechanism of 123 superconducting single domains
Superconductor Science and Technology, 2004Co-Authors: J P Mathieu, I G Cano, T Koutzarova, A Rulmont, Philippe Vanderbemden, D Dewhughes, Marcel Ausloos, Rudi ClootsAbstract: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, the 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 high homogeneity of 211-particle distribution in the material.
-
the contribution of 211 particles to the mechanical reinforcement mechanism of 123 superconducting single domains
arXiv: Superconductivity, 2003Co-Authors: J P Mathieu, I G Cano, T Koutzarova, A Rulmont, Philippe Vanderbemden, D Dewhughes, Marcel Ausloos, Rudi ClootsAbstract: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.
