TY - JOUR
T1 - Analysis of hydrogen content in pure palladium via neutron radiography and tomography
AU - Shimizu, Kazuyuki
AU - Toda, Hiroyuki
AU - Hirayama, Kyosuke
AU - Fujihara, Hiro
AU - Matsumoto, Yoshihisa
AU - Ito, Daisuke
AU - Saito, Yasushi
AU - Kamada, Yasuhiro
N1 - Publisher Copyright:
© 2020 The Japan Institute of Metals and Materials.
PY - 2020/8/1
Y1 - 2020/8/1
N2 - Hydrogen in materials degrades mechanical properties, which is widely recognized as hydrogen embrittlement. To understand hydrogen embrittlement, it is necessary to clarify the accumulation behavior of hydrogen under stress. The neutron radiography and neutron tomography techniques are applied to examine whether hydrogen accumulation behavior can be visualized directly. Palladium specimens with and without hydrogen were prepared for the neutron imaging experiment under stress. Solute hydrogen has caused distinct contrast change in both the neutron radiography and neutron tomography. Hydrogen distribution at a notch-tip in a loaded specimen has not been visualized in the tomographic cross-sectional images. It can be inferred that this is fundamentally attributable to low spatial resolution of the present imaging set-up, and possibility to visualize hydrogen distribution due to loading is discussed.
AB - Hydrogen in materials degrades mechanical properties, which is widely recognized as hydrogen embrittlement. To understand hydrogen embrittlement, it is necessary to clarify the accumulation behavior of hydrogen under stress. The neutron radiography and neutron tomography techniques are applied to examine whether hydrogen accumulation behavior can be visualized directly. Palladium specimens with and without hydrogen were prepared for the neutron imaging experiment under stress. Solute hydrogen has caused distinct contrast change in both the neutron radiography and neutron tomography. Hydrogen distribution at a notch-tip in a loaded specimen has not been visualized in the tomographic cross-sectional images. It can be inferred that this is fundamentally attributable to low spatial resolution of the present imaging set-up, and possibility to visualize hydrogen distribution due to loading is discussed.
UR - http://www.scopus.com/inward/record.url?scp=85091783581&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85091783581&partnerID=8YFLogxK
U2 - 10.2320/jinstmet.J2020017
DO - 10.2320/jinstmet.J2020017
M3 - Article
AN - SCOPUS:85091783581
SN - 0021-4876
VL - 84
SP - 270
EP - 275
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 8
ER -