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observation of recrystallization of aluminum single crystals using synchrotron radiation monochromatic X-raysShiro, Ayumi*; Shobu, Takahisa; Okada, Tatsuya*
Zairyo, 71(4), p.354 - 360, 2022/04
Recrystallization process of an aluminum (Al) single crystal was observed in situ using synchrotron X-rays. Al single-crystalline samples were deformed in tension along a 
111
direction to a strain of 8%, and were subsequently annealed at 753 K. The changes in the shape and intensity of diffraction spots were analyzed using a two-dimensional detector. A diffraction spot from the deformation matrix had three peaks which reflected a sub-grained microstructure of the sample. The 
observation during annealing unveiled the appearance of diffraction spots from a recrystallized grain at 330.8 s. As the diffraction spots from the recrystallized grain became larger, the diffraction spots from the deformation matrix gradually disappeared. The application of the X-ray topography method revealed the crystal orientation variation in a recrystallized grain in order of 0.001 degree.
synchrotron radiation observation of deformation and annealing processes of aluminum single crystalShiro, Ayumi*; Okada, Tatsuya*; Shobu, Takahisa
Mechanical Engineering Journal (Internet), 8(6), p.21-00106_1 - 21-00106_8, 2021/12
The objective of the present study was to carry out observations of deformation and annealing processes of aluminum single crystals using a synchrotron radiation X-rays at SPring-8. Al single-crystalline samples having a 111 orientation parallel to the longitudinal direction were grown by a Bridgman method. The samples were deformed in tension to a nominal strain of 0.08 at room temperature using an in-line tensioning apparatus. Post-deformation annealing at 480 
C was subsequently carried out in the same apparatus. A two-dimensional detector was used to detect multiple diffracted beams from the sample during the deformation and annealing processes. The volume irradiated by the X-ray beam was found to be composed of three regions having a small orientation difference, which was attributable to sub-grained microstructures of the sample. Detailed analyses of a diffraction spot intensity showed that the sub-grained microstructures were surpassed by dislocated microstructures with the increase in the tensile strain. During the post-deformation annealing, diffraction spots from a recrystallized grain first appeared at 180 s after the temperature reached 480 C. Coexistence of diffraction spots from the deformation matrix and recrystallized grain lasted only for about 22 s in the irradiated volume. The migration rate of the boundary between the deformation matrix and recrystallized grain was estimated to be of the order of several micrometers/s.
Chimi, Yasuhiro; Ishikawa, Norito; Iwase, Akihiro*
Materials Research Society Symposium Proceedings, Vol.792, p.379 - 384, 2004/00
We have studied high-energy ion irradiation effects in bismuth by measuring the electrical resistivity at low temperature in relation to its structural change. Bismuth thin films (300-600 
10 K with several kinds of energetic (100-200 MeV) heavy ions. The resistivity of the specimen is measured in-situ at 
7 K during irradiation. After irradiation, annealing behavior of the resistivity is observed up to 35 K. The temperature dependence of the resistivity during annealing shows an abrupt increase around 20 K, implying re-crystallization of irradiation-induced amorphous region. Since amorphous bismuth also shows a superconducting transition below 6 K, high-density electronic excitation due to energetic heavy-ion irradiation may induce columnar region of superconducting amorphous bismuth in normal crystalline bismuth. We are trying to detect the superconducting transition as a result of irradiation-induced amorphization.
Aihara, Jun; Hojo, Kiichi; Furuno, Shigemi*; Ishihara, Masahiro; Hayashi, Kimio
Journal of Electron Microscopy, 51(2), p.93 - 98, 2002/05
Times Cited Count：6 Percentile：20.46(Microscopy)no abstracts in English
Harada, Yuhei; Maruyama, Yu; Maeda, Akio*; Chino, Eiichi; Shibazaki, Hiroaki*; Kudo, Tamotsu; Hidaka, Akihide; Hashimoto, Kazuichiro; Sugimoto, Jun
Journal of Nuclear Science and Technology, 37(6), p.518 - 529, 2000/06
no abstracts in English
Aihara, Jun; Hojo, Kiichi; Furuno, Shigemi; Ishihara, Masahiro; Hayashi, Kimio
Nuclear Instruments and Methods in Physics Research B, 166-167, p.379 - 384, 2000/05
Times Cited Count：8 Percentile：50.62(Instruments & Instrumentation)no abstracts in English
Wakai, Eiichi; Hishinuma, Akimichi; Miwa, Yukio; Ouchi, Asao*; Isozaki, Seiichi*; Takaki, Seiichi*; Abiko, Kenji*
Materials Transactions, JIM, 41(1), p.136 - 140, 2000/01
no abstracts in English
Nishi, Hiroshi; Araki, Toshimitsu*
Nihon Kikai Gakkai Rombunshu, A, 61(584), p.711 - 716, 1995/04
no abstracts in English
Ishiyama, Shintaro; Fukaya, Kiyoshi; Eto, Motokuni; Akiba, Masato
Fitness-For-Service and Dicisions for Petroleum and Chemical Equipment (PVP-Vol. 315), 6 Pages, 1995/00
no abstracts in English
Nishi, Hiroshi; Araki, Toshimitsu*
JAERI-Research 94-035, 12 Pages, 1994/11
JAERI-Research-94-035.pdf:0.93MB
no abstracts in English
*; Kurata, Yuji; ; Nakajima, Hajime; Kondo, Tatsuo
Nihon Genshiryoku Gakkai-Shi, 36(10), p.967 - 975, 1994/00
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)no abstracts in English
Kurata, Yuji; Nakajima, Hajime
JAERI-M 90-157, 38 Pages, 1990/09
no abstracts in English
Li-Al alloy; ;
Journal of Nuclear Materials, 139, p.248 - 252, 1986/00
Times Cited Count：8 Percentile：66.77(Materials Science, Multidisciplinary)no abstracts in English
; Ikawa, Katsuichi
Journal of Nuclear Materials, 107, p.337 - 342, 1982/00
Times Cited Count：2 Percentile：63.08(Materials Science, Multidisciplinary)no abstracts in English
; ; Kondo, Tatsuo
JAERI-M 8786, 19 Pages, 1980/03
no abstracts in English
*; ;
JAERI-M 8567, 23 Pages, 1979/11
no abstracts in English
; ; Iwamoto, K.
JAERI-M 8552, 19 Pages, 1979/11
no abstracts in English
Nakamura, H.;
JAERI-M 8359, 36 Pages, 1979/08
no abstracts in English
; Kondo, Tatsuo
JAERI-M 8153, 14 Pages, 1979/03
no abstracts in English
