Novel -75°C SEM cooling stage: Application for martensitic transformation in steel

Kaneaki Tsuzazki, Motomichi Koyama, Ryosuke Sasaki, Keiichiro Nakafuji, Kazushi Oie, Akinobu Shibata, Takashi Gondo, Hiroya Miyazaki, Hiroshi Akamine, Minoru Nishida

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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.

Original languageEnglish
Pages (from-to)250-254
Number of pages5
Issue number2
Publication statusPublished - Apr 1 2021

All Science Journal Classification (ASJC) codes

  • General Medicine


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