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Journal Articles

Martensite phase stress and the strengthening mechanism in TRIP steel by neutron diffraction

Harjo, S.; Tsuchida, Noriyuki*; Abe, Jun*; Gong, W.*

Scientific Reports (Internet), 7(1), p.15149_1 - 15149_11, 2017/11

AA2017-0453.pdf:3.62MB

 Times Cited Count:26 Percentile:14.19(Multidisciplinary Sciences)

Journal Articles

Investigation of elastic deformation mechanism in as-cast and annealed eutectic and hypoeutectic Zr-Cu-Al metallic glasses by multiscale strain analysis

Suzuki, Hiroshi; Yamada, Rui*; Tsubaki, Shinki*; Imafuku, Muneyuki*; Sato, Shigeo*; Watanuki, Tetsu; Machida, Akihiko; Saida, Junji*

Metals, 6(1), p.12_1 - 12_11, 2016/01

 Times Cited Count:2 Percentile:78.12(Materials Science, Multidisciplinary)

Elastic deformation behaviors of as-cast and annealed eutectic and hypoeutectic Zr-Cu-Al bulk metallic glasses (BMGs) were investigated on a basis of different strain-scales determined by X-ray scattering and the strain gauge. The microscopic strains determined by Direct-space method (DSM) and Q-space method (QSM) were compared with the macroscopic strain measured by the strain gauge, and the difference in the deformation mechanism between eutectic and hypoeutectic Zr-Cu-Al BMGs was investigated by their correlation. The eutectic Zr$$_{50}$$Cu$$_{40}$$Al$$_{10}$$ BMG obtains more homogeneous microstructure by free-volume annihilation after annealing, improving a resistance to deformation but degrading ductility because of a decrease in the volume fraction of WBRs (Weakly-Bonded Regions) with relatively high mobility. On the other hand, the as-cast hypoeutectic Zr$$_{60}$$Cu$$_{30}$$Al$$_{10}$$ BMG originally has homogeneous microstructure, but loses its structural and elastic homogeneities because of nanocluster formation after annealing. Such structural changes after annealing might develop unique mechanical properties showing no degradations of ductility and toughness for the structural-relaxed hypoeutectic BMGs.

Journal Articles

Deformation of graphite under hydrostatic states

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Journal of Nuclear Materials, 125, p.113 - 116, 1984/00

 Times Cited Count:1 Percentile:41.18(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

The Tensile deformation behavior of nuclear-grade isotropic graphite posterior to hydrostatic loading

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Journal of Nuclear Materials, 118, p.214 - 219, 1983/00

 Times Cited Count:3 Percentile:54.79(Materials Science, Multidisciplinary)

no abstracts in English

Oral presentation

Oral presentation

Deformation behavior of medium manganese steels by neutron diffraction

Morooka, Satoshi; Yamashita, Takayuki; Harjo, S.; Tsuchiyama, Toshihiro*

no journal, , 

no abstracts in English

Oral presentation

Strategy for analyzing plasticity heterogeneity in medium Mn steels

Koyama, Motomichi*; Hojo, Tomohiko*; Miyamoto, Goro*; Morooka, Satoshi; Yamashita, Takayuki; Sawaguchi, Takahiro*; Mine, Yoji*; Mayama, Tsuyoshi*; Okitsu, Takayuki*; Sakakibara, Mutsumi*; et al.

no journal, , 

no abstracts in English

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