The Observations of Martensitic Transformations in SUS316 by Using a Sensitive Flux-Gate Sensor

Abstract:

The martensitic transformations (MT) in austenite stainless steel (SUS316) were observed by using a sensitive Flux-Gate (FG) sensor just after the magnetizations by the permanent magnet in the terrestrial field. MT in the small deformation range less than 5% elongation, was visualized by the 2-dimensional profile at each position together with the profile of the thickness deformations with an accuracy of several microns. We found the local MT enhancements up to 400[nT] at the positions along the changes of the thickness. In this experiment, the observations of MT were able to avoid the effects of the external fields or of the ac fields which was generated by the gating function in the FG sensor.

• Periodical: Key Engineering Materials (Volume 644)
• Pages: 8-11
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.644.8
• Online since: May 2015
• Authors: Koji Yamada*, Yoshihiro Isobe, Takashi Todaka, Hiroyasu Simoji
• Keywords: 2-D Profile, 400nT, 5% Elongation, Flux-Gate Sensor, In Terrestrial Field, Martensitic Transformation, Remanence, Sensitive, SUS316

References

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