TY - GEN
T1 - Crystallographic structure study of a japanese sword masamitsu made in the 1969 using pulsed neutron imaging
AU - Ohmae, Kazuma
AU - Kiyanagi, Yoshiaki
AU - Sato, Hirotaka
AU - Oikawa, Kenichi
AU - Pham, Anh Hoang
AU - Watanabe, Kenichi
AU - Matsumoto, Yoshihiro
AU - Shinohara, Takenao
AU - Kai, Tetsuya
AU - Harjo, Stefanus
AU - Ohnuma, Masato
AU - Morito, Shigekazu
AU - Ohba, Takuya
AU - Uritani, Akira
AU - Ito, Masakazu
N1 - Publisher Copyright:
© 2020, Association of American Publishers. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Energy-resolved neutron transmission imaging technique using an accelerator-driven pulsed neutron source and a time-resolved two-dimensional detector can obtain the Bragg-edge transmission spectrum at each pixel. In this technique, crystallographic information can be visualized over a wide area of a sample. We used this method to investigate the crystallographic information of a modern Japanese sword produced by Masamitsu in 1969. As a result, shifting and broadening of the (110) Bragg-edge was confirmed at the cutting-edge side. It is evidence that the martensite phase exists at the cutting-edge side as a result of the quenching process. By comparing with results of the old Japanese swords, it is found that the martensite region in the modern Japanese sword is wider or deeper than one in the old swords. In addition, we can see strongly preferred orientation of the crystal grains at the boundary between the martensite phase on the cutting-edge side and the ferrite phase on the back-edge side.
AB - Energy-resolved neutron transmission imaging technique using an accelerator-driven pulsed neutron source and a time-resolved two-dimensional detector can obtain the Bragg-edge transmission spectrum at each pixel. In this technique, crystallographic information can be visualized over a wide area of a sample. We used this method to investigate the crystallographic information of a modern Japanese sword produced by Masamitsu in 1969. As a result, shifting and broadening of the (110) Bragg-edge was confirmed at the cutting-edge side. It is evidence that the martensite phase exists at the cutting-edge side as a result of the quenching process. By comparing with results of the old Japanese swords, it is found that the martensite region in the modern Japanese sword is wider or deeper than one in the old swords. In addition, we can see strongly preferred orientation of the crystal grains at the boundary between the martensite phase on the cutting-edge side and the ferrite phase on the back-edge side.
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U2 - 10.21741/9781644900574-35
DO - 10.21741/9781644900574-35
M3 - Conference contribution
AN - SCOPUS:85103546791
SN - 9781644900567
T3 - Materials Research Proceedings
SP - 227
EP - 232
BT - Neutron Radiography - 11th World Conference on Neutron Radiography, WCNR 2018
A2 - Salvemini, Filomena
A2 - Bevitt, Joseph J.
PB - Association of American Publishers
T2 - 11th World Conference on Neutron Radiography, WCNR 2018
Y2 - 2 September 2018 through 7 September 2018
ER -