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-TiAl intermetallic compoundsSawai, Tomotsugu; Hishinuma, Akimichi
Journal of Physics and Chemistry of Solids, 66(2-4), p.335 - 338, 2005/02
Times Cited Count：14 Percentile：49.98(Chemistry, Multidisciplinary)TiAl intermetallic compounds are potential materials for high temperature structural applications. They have also low induced radio-activity and good radiation resistance, which make these alloys very attractive in nuclear applications. Their ductility at low temperatures should be, however, still improved and their deformation mechanism is of great concern. In this study, intersections of deformation twins in -TiAl grains were examined in Ti-47at%Al alloy specimens tensile-tested at 873 K. Transmission electron microscopy (TEM) revealed 1/2
110]{111} ordinary-type dislocations and 1/6112]{111} twins in deformed -TiAl grains. Some -TiAl grains contained twins on two different {111} planes, which intersect along 110] directions (type-1). No twin intersection along 101] (type-2) was observed, which was often reported in compressed specimens. Results are discussed with the Schmid factor distributions of twinning systems and ordinary slip systems as the function of tensile directions.
Sawai, Tomotsugu; Wakai, Eiichi; Jitsukawa, Shiro; Hishinuma, Akimichi
Journal of Nuclear Materials, 307-311(Part1), p.389 - 392, 2002/12
Times Cited Count：3 Percentile：23.41(Materials Science, Multidisciplinary)A Ti-35Al-10V alloy was fabricated from mechanically alloyed powder by a hot-isostatic-pressing. The microstructure consists of 
2, , and 
phases. Specimens were irradiated in Japan Research Reactor No. 3 Modified (JRR-3M) up to 3.5 
10
n/cm
at 400
C and 600C. Unirradiated tensile specimens showed total elongation of 3 to 15 % at 400C-tests, while 400C-irradiated or 600C-irradiated specimens showed no plastic deformation before fracture. At 600C tensile tests, unirradiated specimens showed total elongation of more than 60 %, while irradiated ones showed 10 % or less elongation. The low ductility of irradiated specimens suggests embrittlement due to phase decomposition, but electron diffraction using a transmission electron microscope results of irradiated specimens will be also discussed.
Wakai, Eiichi; Hashimoto, Naoyuki*; Robertson, J. P.*; Sawai, Tomotsugu; Hishinuma, Akimichi
Journal of Nuclear Materials, 307-311(Part.1), p.352 - 356, 2002/12
Times Cited Count：11 Percentile：58.11(Materials Science, Multidisciplinary)no abstracts in English
Hishinuma, Akimichi; Takaki, Seiichi*; Abiko, Kenji*
Physica Status Solidi (A), 189(1), p.69 - 78, 2002/01
Times Cited Count：13 Percentile：55.67(Materials Science, Multidisciplinary)no abstracts in English
Seki, Masahiro; Hishinuma, Akimichi; Kurihara, Kenichi; Akiba, Masato; Abe, Tetsuya; Ishitsuka, Etsuo; Imai, Tsuyoshi; Enoeda, Mikio; Ohira, Shigeru; Okumura, Yoshikazu; et al.
Kaku Yugoro Kogaku Gairon; Mirai Enerugi Eno Chosen, 246 Pages, 2001/09
no abstracts in English
phaseSawai, Tomotsugu; Tabuchi, Masayuki*; Wakai, Eiichi; Hishinuma, Akimichi
Proceedings of Materials Research Society Symposium, Vol.650, p.R3.9.1 - R3.9.6, 2001/00
no abstracts in English
Sawai, Tomotsugu; Shiba, Kiyoyuki; Hishinuma, Akimichi
Journal of Nuclear Materials, 283-287(Part.1), p.657 - 661, 2000/12
Times Cited Count：41 Percentile：90.77(Materials Science, Multidisciplinary)no abstracts in English
Tanigawa, Hiroyasu; Jitsukawa, Shiro; Hishinuma, Akimichi; Ando, Masami*; Kato, Yudai*; Koyama, Akira*; Iwai, Takeo*
Journal of Nuclear Materials, 283-287(Part.1), p.470 - 473, 2000/12
Times Cited Count：21 Percentile：77.56(Materials Science, Multidisciplinary)no abstracts in English
ion irradiationWakai, Eiichi; Hishinuma, Akimichi; Abe, Hiroaki; Takaki, Seiichi*; Abiko, Kenji*
Materials Transactions, JIM, 41(9), p.1176 - 1179, 2000/09
no abstracts in English
Wakai, Eiichi; Hishinuma, Akimichi; Usami, Koji; Kato, Yasushi*; Takaki, Seiichi*; Abiko, Kenji*
Materials Transactions, JIM, 41(9), p.1180 - 1183, 2000/09
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
CWakai, Eiichi; Hashimoto, N.*; J.P.Robertson*; Sawai, Tomotsugu; Hishinuma, Akimichi
Fusion Materials, 313(25), p.197 - 201, 1999/04
no abstracts in English
Hishinuma, Akimichi; Tabuchi, Masayuki; Sawai, Tomotsugu
Intermetallics, 7(8), p.875 - 879, 1999/00
Times Cited Count：10 Percentile：59.64(Chemistry, Physical)no abstracts in English
Jitsukawa, Shiro; Ioka, Ikuo; Hishinuma, Akimichi
Journal of Nuclear Materials, 271-272, p.167 - 172, 1999/00
Times Cited Count：6 Percentile：45.57(Materials Science, Multidisciplinary)no abstracts in English
Shiba, Kiyoyuki; Hishinuma, Akimichi
Purazuma, Kaku Yugo Gakkai-Shi, 74(5), p.436 - 441, 1998/05
no abstracts in English
Hishinuma, Akimichi; Koyama, Akira*; R.L.Klueh*; D.S.Gelles*; Ehrlich, K.*; W.Dietz*
Journal of Nuclear Materials, 258-263, p.193 - 204, 1998/00
Times Cited Count：209 Percentile：99.81(Materials Science, Multidisciplinary)no abstracts in English
Watanabe, Katsutoshi; Hishinuma, Akimichi; *; *
Journal of Nuclear Materials, 258-263, p.848 - 852, 1998/00
Times Cited Count：10 Percentile：63.67(Materials Science, Multidisciplinary)no abstracts in English
Sawai, Tomotsugu; Shiba, Kiyoyuki; Hishinuma, Akimichi
Journal of Nuclear Materials, 258-263, p.1997 - 2001, 1998/00
Times Cited Count：3 Percentile：31.85(Materials Science, Multidisciplinary)no abstracts in English
Miwa, Yukio; Jitsukawa, Shiro; Hishinuma, Akimichi
Journal of Nuclear Materials, 258-263(PT.A), p.457 - 461, 1998/00
Times Cited Count：15 Percentile：74.78(Materials Science, Multidisciplinary)no abstracts in English
Ioka, Ikuo; Naito, Akira; Shiba, Kiyoyuki; Jitsukawa, Shiro; J.P.Robertson*; Hishinuma, Akimichi
Journal of Nuclear Materials, 258-263, p.1664 - 1668, 1998/00
Times Cited Count：2 Percentile：24.49(Materials Science, Multidisciplinary)no abstracts in English
