Zobrazeno 1 - 10
of 200
pro vyhledávání: '"Yoshikazu TODAKA"'
Autor:
Mathias Bersweiler, Hirokazu Sato, Nozomu Adachi, Yoshikazu Todaka, Inma Peral, Joachim Kohlbrecher, Vladislav D. Zaporozhets, Konstantin L. Metlov, Andreas Michels, Yojiro Oba
Publikováno v:
IUCrJ, Vol 10, Iss 4, Pp 411-419 (2023)
The development of higher-order micromagnetic small-angle neutron scattering theory in nanocrystalline materials is still in its infancy. One key challenge remaining in this field is understanding the role played by the microstructure on the magnitud
Externí odkaz:
https://doaj.org/article/5e41f421ecc449dcb24db71ecd7e2689
Autor:
Martin Fibela-Esparza, Armando Salinas-Rodriguez, Juan Méndez-Nonell, José Martin Herrera-Ramirez, Yoshikazu Todaka, José Gerardo Cabañas-Moreno
Publikováno v:
Metals, Vol 12, Iss 10, p 1684 (2022)
A Mg-based composite material has been produced by the consolidation at room temperature of a Mg-5wt.% Ni-2wt.% Nb2O5 powder mixture subjected to high-pressure torsion (HPT), one of the processing methods to induce severe plastic deformations. The mi
Externí odkaz:
https://doaj.org/article/9f5c9a750d56431bba0f6b0a2368619d
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 882, Pp 19-00270-19-00270 (2020)
This study provides a theoretical investigation on shear stress distribution inside a steel roller with a nanostructured surface, manufactured by the severe plastic deformation and induction heating processes, under a rolling contact fatigue testing,
Externí odkaz:
https://doaj.org/article/f266f7926e5c474387c9e1fd55f2f563
Autor:
Yosuke Sakurai, Hirotaka Sato, Nozomu Adachi, Satoshi Morooka, Yoshikazu Todaka, Takashi Kamiyama
Publikováno v:
Applied Sciences, Vol 11, Iss 11, p 5219 (2021)
As a new method for evaluating single crystals and oligocrystals, pulsed neutron Bragg-dip transmission analysis/imaging method is being developed. In this study, a single Bragg-dip profile-fitting analysis method was newly developed, and applied for
Externí odkaz:
https://doaj.org/article/c7eb9b1bcf644c03ad0e66f359963a6e
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 80, Iss 818, Pp SMM0296-SMM0296 (2014)
Aiming at an enhanced fatigue strength of Ti-6Al-4V alloys, the severe plastic deformation was given to the specimen surface at the final stage of lathe turning. The main findings of this study can be summarized as follows. A chip with unique shape f
Externí odkaz:
https://doaj.org/article/21a6ad4876244d5dabb2eb96c0683604
Autor:
Motohiro Yuasa, Ryoichi Sato, Takao Hoshino, Daisuke Ando, Yoshikazu Todaka, Hiroyuki Miyamoto, Hidetoshi Somekawa
Publikováno v:
MATERIALS TRANSACTIONS. 64:730-734
Autor:
Nozomu Adachi, Yoshikazu Todaka, Tashika Masaki, Yoshinori Shiihara, Takuya Suzuki, Masahiro Tsukahara, Osamu Idohara
Publikováno v:
ISIJ International. 62:2147-2157
Publikováno v:
MATERIALS TRANSACTIONS. 63:864-871
Publikováno v:
Journal of the Japan Institute of Metals and Materials. 86:43-51
Publikováno v:
Metallurgical and Materials Transactions A. 52:4749-4752
We revealed that hydrogen (H) in pure Fe promotes grain refinement during plastic deformation, which is caused by the increase in dislocation density by the shielding effect and the presence of vacancy-H clusters. The promotion effect of H was depend