Novel −75°C SEM cooling stage: application for martensitic transformation in steel
| Autor: | Hiroshi Akamine, Keiichiro Nakafuji, Kaneaki Tsuzazki, Akinobu Shibata, Ryosuke Sasaki, Kazushi Oie, Takashi Gondo, Motomichi Koyama, Hiroya Miyazaki, Minoru Nishida |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Scanning electron microscope in situ electron microscopy Alloy 02 engineering and technology Slip (materials science) engineering.material Channelling 01 natural sciences Technical Report Structural Biology 0103 physical sciences Thermoelectric effect Radiology Nuclear Medicine and imaging steel Composite material Instrumentation cooling stage 010302 applied physics 021001 nanoscience & nanotechnology martensitic transformation Diffusionless transformation Martensite SEM engineering AcademicSubjects/SCI00960 0210 nano-technology ECCI Electron backscatter diffraction |
| Zdroj: | Microscopy |
| ISSN: | 2050-5701 2050-5698 |
| DOI: | 10.1093/jmicro/dfaa051 |
| Popis: | Microstructural changes during the martensitic transformation from face-centred cubic (FCC) to body-centred cubic (BCC) in an Fe-31Ni alloy were observed by scanning electron microscopy (SEM) with a newly developed Peltier stage available at temperatures to −75°C. Electron channelling contrast imaging (ECCI) was utilized for the in situ observation during cooling. Electron backscatter diffraction analysis at ambient temperature (20°C) after the transformation was performed for the crystallographic characterization. A uniform dislocation slip in the FCC matrix associated with the transformation was detected at −57°C. Gradual growth of a BCC martensite was recognized upon cooling from −57°C to −63°C. |
| Databáze: | OpenAIRE |
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