Dislocation densities and intergranular stresses of plastically deformed austenitic steels
| Autor: | Stefanus Harjo, Y. Tomota, Wu Gong, Mayumi Ojima, Shigeo Sato, Tamás Ungár |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Austenite Diffraction Materials science Misorientation Mechanical Engineering Neutron diffraction 02 engineering and technology Intergranular corrosion 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Mechanics of Materials 0103 physical sciences Ultimate tensile strength General Materials Science Composite material Dislocation 0210 nano-technology Electron backscatter diffraction |
| Zdroj: | Materials Science and Engineering: A. 743:32-39 |
| ISSN: | 0921-5093 |
| DOI: | 10.1016/j.msea.2018.09.052 |
| Popis: | Heterogeneous plastic deformation behavior of oriented individual grains-family with respect to the tensile direction in austenitic steels was studied using electron back scatter diffraction (EBSD) and neutron diffraction (ND) measurements. The kernel averaged misorientation value determined by EBSD for a plastically deformed specimen was different in grain to grain, suggesting different dislocation densities. Such insights obtained from the surface observations with EBSD were quantitatively evaluated as bulk-averaged data using ND. The convolutional multiple whole profile fitting (CMWP) for ND profiles has revealed different dislocation densities in oriented grains-families, showing good coincidence with the EBSD results in trend. |
| Databáze: | OpenAIRE |
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