Kiyoshi Kamei
Kansai University
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Featured researches published by Kiyoshi Kamei.
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 1996
Shin-ya Komatsu; Masahiko Ikeda; Takashi Sugimoto; Kiyoshi Kamei; Osamu Maesaki; Masa-aki Kojima
Abstract Aging behavior of Ti 15Mo 5Zr (15-5) and Ti 15Mo 5Zr 3Al (15-5-3) alloys isothermally aged below 573 K has been investigated mainly through resistometry. In the 15-5 alloy, resistivity at 77 K (ϱLN) increases only slightly, whereas the resistivity at room temperature (ϱRT) increases greatly. The ϱ of the 15-5-3 alloy shows the same tendency as that of the 15-5, but the increase in ϱ continues for a longer period and the increment is larger than in the 15-5 alloy. X-ray diffraction and hardness of the 15-5-3 suggest a long incubation period for the precipitation of the aged ω phase, in contrast to that of a 15-5 alloy aged between 623 K and 723 K. The increase in ϱRT of these alloys might be best interpreted as the concentration separation of β matrix, like GP zones in Al alloys, which contributes to a significant increase in ϱ but to only a minor increase in hardness. Also with α precipitation at high aging temperature, a slight increase is observed in ϱLN during an apparent incubation period. These results suggest that the concentration separation of β occurs at both high and low aging temperatures and that suppression of aged ω by Al addition makes the ϱ increase conspicuous.
Le Journal De Physique Colloques | 1982
Koichi Sugimoto; Kiyoshi Kamei; H. Matsumoto; Shin-ya Komatsu; Katsuya Akamatsu; Takashi Sugimoto
Journal of The Japan Institute of Metals | 1990
Masahiko Ikeda; Shin-ya Komatsu; Takashi Sugimoto; Kiyoshi Kamei
Journal of The Japan Institute of Metals | 1977
Shuntaro Terauchi; Hiroshi Matsumoto; Takashi Sugimoto; Kiyoshi Kamei
Archive | 1985
Koichi Sugimoto; Kiyoshi Kamei; Yotaro Murakami; Takashi Sugimoto; Takashi Nishimura; Takahiro Takashima
Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1998
Koichiro Inoue; Masahiko Ikeda; Shin-ya Komatsu; Takashi Sugimoto; Kiyoshi Kamei
Journal of The Japan Institute of Metals | 1991
Masahiko Ikeda; Shin-ya Komatsu; Takashi Sugimoto; Kiyoshi Kamei
Engineering Aspects of Shape Memory Alloys | 1990
Koichi Sugimoto; Kiyoshi Kamei; Masayosi Nakaniwa
Journal of The Japan Institute of Metals | 1988
Masahiko Ikeda; Shin-ya Komatsu; Takashi Sugimoto; Kiyoshi Kamei
Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 1998
Koichiro Inoue; Masahiko Ikeda; Shin-ya Komatsu; Takashi Sugimoto; Kiyoshi Kamei