Extreme Ductility at the Nanoscale in Fe-based Alloys
نویسندگان
چکیده
منابع مشابه
Extreme Ductility at the Nanoscale in Fe-based Alloys
A novel method for preparing and testing bending specimens in-situ the TEM has been developed. This method provides high visibility of the crack front and its associated plastic zone. This is significant because energy release rates can now be calculated at many points throughout the test based on crack tip opening displacement (CTOD), crack opening angle (COA), and crack advance. Further refin...
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3914)"Graduate Student, Department of Materials Science & Engineering, Faculty of Engineering, Shibaura Institute of Technology (3914 Shibaura, Minato-ku, Tokyo 1088548). 芝浦工業大学大学院生(東京都)〔現在財日本品質保証機構(東京都)〕"Graduate Student, Shibaura Institute of Technology (Minatoku, Tokyo).〔Present: Japan Quality Assurance Organization (Setagaya-ku, Tokyo)〕. 芝浦工業大学工学部(東京都)"Faculty of Engineering, Sh...
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Plastic deformation and alloying of nanocrystalline Ni-Fe is studied by means of atomic scale computer simulations. By using a combination of Monte-Carlo and molecular dynamics methods we find that solutes have an ordering tendency even if grain sizes are in the nanometer regime, where the phase field of the ordered state is widened as compared to larger grain sizes. Tensile testing of disorder...
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High temperature tensile tests have been conducted on samples of a Fe-Ni based superalloy, Incoloy A-286, and significant ductility loss has been observed at 1220 °C. Titanium-rich, thin-film-like phase has been found on the inter-granular facets of fracture surfaces. It appears that sulfur content of Ti-rich phase was higher than that of the matrix. At 1220 °C, liquation of Ti-rich phases has ...
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ژورنال
عنوان ژورنال: Microscopy and Microanalysis
سال: 2014
ISSN: 1431-9276,1435-8115
DOI: 10.1017/s1431927614011118