Zobrazeno 1 - 10
of 434
pro vyhledávání: '"J Kitamura"'
Autor:
J. Kitamura, J. Lee, Seung Zeon Han, Sung Hwan Lim, S.J. Lee, Masahiro Goto, Takaei Yamamoto, T. Utsunomiya, J.H. Ahn
Publikováno v:
Materials Science Forum. 1016:125-131
On the thermomechanical treatments of Cu-Ni-Si alloy, cold-rolling (CR) before solution heat treatment (SHT) is commonly conducted to eliminate defects in a casting slab. In addition, a rolling is applied to reduce/adjust the thickness of casting sla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f7464e7a55c2e363eba424d470f8c72
https://doi.org/10.4028/www.scientific.net/msf.1016.125
https://doi.org/10.4028/www.scientific.net/msf.1016.125
Autor:
J. Kitamura, Seung Zeon Han, Terutoshi Yakushiji, Takahito Utsunomiya, Sung Hwan Lim, J.H. Ahn, Takaei Yamamoto, Masahiro Goto
Publikováno v:
Computational Methods and Experimental Measurements XX.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a441581e846c4977cc86a9a587c9df5
https://doi.org/10.2495/cmem210071
https://doi.org/10.2495/cmem210071
Autor:
Terutoshi Yakushiji, J. Kitamura, Masahiro Goto, Seung Zeon Han, Takaei Yamamoto, J. Lee, R. Takanami
Publikováno v:
Key Engineering Materials. 827:216-221
Stress-controlled fatigue tests were conducted on round-bar specimens to understand the fatigue behavior of precipitate-strengthened Cu–6Ni–1.5Si alloy. The cracks were initiated at the grain boundaries, followed by growth along the crystallograp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9793ed96b2fd4143a498da5046f441f
https://doi.org/10.4028/www.scientific.net/kem.827.216
https://doi.org/10.4028/www.scientific.net/kem.827.216
Autor:
J. Kitamura, Seung Zeon Han, J.H. Ahn, S.S. Kim, Takashi Iwamura, S.H. Lim, Masahiro Goto, Takaei Yamamoto, Jong-Hyeon Lee
Publikováno v:
International Journal of Fatigue. 123:135-143
Fatigue tests were conducted on round bar specimens of a solution-treated and air-cooled Cu-Ni-Si alloy with high solute concentrations of 6% Ni and 1.5% Si. This alloy was strengthened by disc-shaped Ni2Si precipitates, a few tens of nanometers in d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29295c7d2da9d8e4f473f6190dd7caf3
https://doi.org/10.1016/j.ijfatigue.2019.02.004
https://doi.org/10.1016/j.ijfatigue.2019.02.004
Autor:
S.S. Kim, Sung Hwan Lim, Terutoshi Yakushiji, Seung Zeon Han, Takaei Yamamoto, Masahiro Goto, J.H. Ahn, Takashi Iwamura, J. Kitamura, Jong-Hyeon Lee
Publikováno v:
Materials Science and Engineering: A. 747:63-72
The effect of microstructure on the fatigue strength of age-hardened Cu–6Ni–1.5Si alloy was investigated in this study. The aging was conducted at 500 °C for 0.5 h for the precipitation of disk-shaped δ-Ni2Si precipitates (continuous precipitat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::799b26214150213dcef728ce727d46ad
https://doi.org/10.1016/j.msea.2019.01.057
https://doi.org/10.1016/j.msea.2019.01.057
Publikováno v:
FRACTURE AND DAMAGE MECHANICS: Theory, Simulation and Experiment.
On Cu-Ni-Si alloy with high solute concentrations, overaging brings a decrease in strength because of formation of discontinuous precipitate (DP) phases. Recently, it has been shown that both electrical conductivity and tensile strength of mechanical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ef46e304e045df890bbf395cc990187
https://doi.org/10.1063/5.0034053
https://doi.org/10.1063/5.0034053
Autor:
Masahiro Goto, Seung Zeon Han, Takaei Yamamoto, Takashi Iwamura, Terutoshi Yakushiji, J. Kitamura
Publikováno v:
Materials Science Forum. 941:614-619
Fatigue tests of ultrafine-grained copper processed by equal channel angular pressing were conducted on the round-bar specimens with a small artificial-defect. The fatigue crack initiated from the defect at an early fatigue stage. After the crack ini
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7baf84c28f1c8e3f10f71d1d2a8d6b86
https://doi.org/10.4028/www.scientific.net/msf.941.614
https://doi.org/10.4028/www.scientific.net/msf.941.614
Autor:
J. Kitamura, Takaei Yamamoto, Takashi Iwamura, Terutoshi Yakushiji, Masahiro Goto, Seung Zeon Han, Toshiki Masuda, Jee Hyuk Ahn, Sangshik Kim, Kusno Kamil
Publikováno v:
International Journal of Computational Methods and Experimental Measurements. 6:691-702
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f40ce73ba88762101905625c5ee0eb70
https://doi.org/10.2495/cmem-v6-n4-691-702
https://doi.org/10.2495/cmem-v6-n4-691-702
Autor:
J. Kitamura, Takashi Iwamura, Seung Zeon Han, Jong-Hyeon Lee, Takaei Yamamoto, Masahiro Goto, J.H. Ahn, S.S. Kim
Publikováno v:
Engineering Fracture Mechanics. 182:100-113
For low-cycle fatigued, ultrafine grained copper, processed by equal channel angular pressing, a unique crack growth direction, either inclined at 45° or perpendicular to the loading direction, was observed around the circumference of round bar spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2fd85a6970c0f9e7ef3eddf017aa8e3
https://doi.org/10.1016/j.engfracmech.2017.07.024
https://doi.org/10.1016/j.engfracmech.2017.07.024
Autor:
Masahiro Goto, J.H. Ahn, J. Kitamura, Seung Zeon Han, Sung Hwan Lim, Takaei Yamamoto, T. Iwamura
Publikováno v:
Procedia Structural Integrity. 7:248-253
Microstructure and fatigue strength of Cu-Ni-Si alloy with high solute concentrations were studied. The maximum hardness of this alloy was obtained by 0.5 h aging (500°C) and the matrix was strengthened by nano-size δ-Ni2Si precipitates. In additio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3edeef877bbbfc9877b1b7b56349457
https://doi.org/10.1016/j.prostr.2017.11.085
https://doi.org/10.1016/j.prostr.2017.11.085