Crystallographic Microstructure Study of a Japanese Sword made by Noritsuna in the Muromachi Period by Pulsed Neutron Bragg-Edge Transmission Imaging

Crystallographic Microstructure Study of a Japanese Sword made by Noritsuna in the Muromachi Period by Pulsed Neutron Bragg-Edge Transmission Imaging

Hirotaka Sato, Yoshiaki Kiyanagi, Kenichi Oikawa, Kazuma Ohmae, Anh Hoang Pham, Kenichi Watanabe, Yoshihiro Matsumoto, Takenao Shinohara, Tetsuya Kai, Stefanus Harjo, Masato Ohnuma, Shigekazu Morito, Takuya Ohba, Akira Uritani, Masakazu Itoh

Abstract. Large-area real-space distribution of crystallographic microstructural information in a Japanese sword made by Noritsuna at Bizen in A.D. 1405 was non-destructively investigated by Bragg-edge neutron transmission imaging using the RADEN instrument at BL22 of MLF (Materials and Life Science Experimental Facility) in J-PARC and the data analysis software RITS (Rietveld Imaging of Transmission Spectra), as one of the series of a systematic research project. As a result, unique properties of the Noritsuna sword were revealed as follows. Hard martensite which d-spacing is close to that of a modern quenched steel exists at the cutting edge, but the area is smaller than that of a modern sword. Coarse grains exist near the notch at the back of the tang. Fine and coarse crystallite-size steels are separately distributed. The texture is not so strong, and the preferred orientation <210> is perpendicular to the normal direction of the sword plate except for the front region of the tang region.

Keywords
Japanese Sword, Noritsuna, Bizen, Muromachi Period, Martensite Phase, Crystallographic Texture, Microstructure, Crystalline Grain, Neutron Imaging, Bragg Edge

Published online 1/5/2020, 7 pages
Copyright © 2020 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Hirotaka Sato, Yoshiaki Kiyanagi, Kenichi Oikawa, Kazuma Ohmae, Anh Hoang Pham, Kenichi Watanabe, Yoshihiro Matsumoto, Takenao Shinohara, Tetsuya Kai, Stefanus Harjo, Masato Ohnuma, Shigekazu Morito, Takuya Ohba, Akira Uritani, Masakazu Itoh, Crystallographic Microstructure Study of a Japanese Sword made by Noritsuna in the Muromachi Period by Pulsed Neutron Bragg-Edge Transmission Imaging, Materials Research Proceedings, Vol. 15, pp 214-220, 2020

DOI: https://doi.org/10.21741/9781644900574-33

The article was published as article 33 of the book Neutron Radiography

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] Y. Matsumoto, K. Watanabe et al., Mater. Res. Proc. (these proceedings).
[2] F. Grazzi, L. Bartoli, F. Civita, R. Franci, A. Paradowska, A. Scherillo and M. Zoppi, J. Anal. At. Spectrom. 26 (2011) 1030-1039. https://doi.org/10.1039/c0ja00238k
[3] F. Salvemini, F. Grazzi, S. Peetermans, F. Civita, R. Franci, S. Hartmann, E. Lehmann and M. Zoppi, J. Anal. At. Spectrom. 27 (2012) 1494-1501. https://doi.org/10.1039/c2ja30035d
[4] K. Kino, N. Ayukawa, Y. Kiyanagi, T. Uchida, S. Uno, F. Grazzi and A. Scherillo, Phys. Procedia 43 (2013) 360-364. https://doi.org/10.1016/j.phpro.2013.03.043
[5] Y. Shiota, H. Hasemi and Y. Kiyanagi, Phys. Procedia 88 (2017) 128-133. https://doi.org/10.1016/j.phpro.2017.06.017
[6] K. Oikawa et al., Mater. Res. Proc. (this proceedings).
[7] K. Ohmae et al., Mater. Res. Proc. (this proceedings).
[8] T. Shinohara, T. Kai, K. Oikawa, M. Segawa, M. Harada, T. Nakatani, M. Ooi, K. Aizawa, H. Sato, T. Kamiyama, H. Yokota, T. Sera, K. Mochiki and Y. Kiyanagi, J. Phys. Conf. Ser. 746 (2016) 012007. https://doi.org/10.1088/1742-6596/746/1/012007
[9] S. Uno, T. Uchida, M. Sekimoto, T. Murakami, K. Miyama, M. Shoji, E. Nakano, T. Koike, K. Morita, H. Satoh, T. Kamiyama and Y. Kiyanagi, Phys. Procedia 26 (2012) 142-152. https://doi.org/10.1016/j.phpro.2012.03.019
[10] H. Sato, T. Kamiyama and Y. Kiyanagi, Mater. Trans. 52 (2011) 1294-1302. https://doi.org/10.2320/matertrans.M2010328
[11] H. Sato, T. Sato, Y. Shiota, T. Kamiyama, A. S. Tremsin, M. Ohnuma and Y. Kiyanagi, Mater. Trans. 56 (2015) 1147-1152. https://doi.org/10.2320/matertrans.M2015049
[12] H. Sato, K. Watanabe, K. Kiyokawa, R. Kiyanagi, K. Y. Hara, T. Kamiyama, M. Furusaka, T. Shinohara and Y. Kiyanagi, Phys. Procedia 88 (2017) 322-330. https://doi.org/10.1016/j.phpro.2017.06.044
[13] W. Kockelmann, G. Frei, E. H. Lehmann, P. Vontobel and J. R. Santisteban, Nucl. Instrum. Methods A 578 (2007) 421-434. https://doi.org/10.1016/j.nima.2007.05.207