Výsledky vyhledávání - "Tomotsugu SHIMOKAWA"

Akademický článek

Investigating the dislocation reactions on Σ3{111} twin boundary during deformation twin nucleation process in an ultrafine-grained high-manganese steel

Autor: Chang-Yu Hung, Tomotsugu Shimokawa, Yu Bai, Nobuhiro Tsuji, Mitsuhiro Murayama

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)

Abstract Some of ultrafine-grained (UFG) metals including UFG twinning induced plasticity (TWIP) steels have been found to overcome the paradox of strength and ductility in metals benefiting from their unique deformation modes. Here, this study provi

Externí odkaz: https://doaj.org/article/1885a53d6c2a47919b39a06d081c9623

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Akademický článek

A correlation between grain boundary character and deformation twin nucleation mechanism in coarse-grained high-Mn austenitic steel

Autor: Chang-Yu Hung, Yu Bai, Tomotsugu Shimokawa, Nobuhiro Tsuji, Mitsuhiro Murayama

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)

Abstract In polycrystalline materials, grain boundaries are known to be a critical microstructural component controlling material’s mechanical properties, and their characters such as misorientation and crystallographic boundary planes would also i

Externí odkaz: https://doaj.org/article/ceccea22d28b4de0b927a249bb6e83d1

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Akademický článek

Influence of non-glide stresses on the peierls energy of screw dislocations

Autor: Keisuke KINOSHITA, Tomotsugu SHIMOKAWA, Toshiyasu KINARI, Hideaki SAWADA, Kazuto KAWAKAMI, Kohsaku USHIODA

Publikováno v: Nihon Kikai Gakkai ronbunshu, Vol 80, Iss 809, Pp CM0018-CM0018 (2014)

We investigate the influence of non-glide stresses on the Peierls energy of screw dislocation by using Nudged-Elastic-Band method. The influence of the applied non-glide stress fields on the Peierls energy of a screw dislocation is clearly observed.

Externí odkaz: https://doaj.org/article/3d9fd8354a894f53a80a40c7742829c7

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Atomistic mechanisms of intermittent plasticity in metals: Dislocation avalanches and defect cluster pinning

Autor: Tomoaki, Niiyama, Tomotsugu, Shimokawa

Publikováno v: Phys. Rev. E, 91, 022401 (2015)

Intermittent plastic deformation in crystals with power-law behaviors has been reported in previous experimental studies. The power-law behavior is reminiscent of self-organized criticality, and mesoscopic models have been proposed that describe this

Externí odkaz: http://arxiv.org/abs/1509.09036

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