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Yamashita, Keishiro*; Komatsu, Kazuki*; Ohara, Takashi; Munakata, Koji*; Irifune, Tetsuo*; Shimmei, Toru*; Sugiyama, Kazumasa*; Kawamata, Toru*; Kagi, Hiroyuki*
High Pressure Research, 42(1), p.121 - 135, 2022/03
Times Cited Count：3 Percentile：56.47(Physics, Multidisciplinary)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：3 Percentile：17.5(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
Cu
Al
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
Cu
Al 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.
Wang, W. H.*; Utsumi, Wataru; Wang, X. L.*
Europhysics Letters, 71(4), p.611 - 617, 2005/08
Times Cited Count：6 Percentile：41.61(Physics, Multidisciplinary)The crystallization kinetics and nucleation mechanism of a bulk metallic glassforming alloy Zr
Ti
Cu
NiBe
(vit4) in the entire supercooled liquid region (SLR) is investigated using in situ high-pressure and high-temperature X-ray diffraction with synchrotron radiation, which allows us for the time to simultaneously determine the crystallization kinetics and phase evolution of a metallic liquid as a function of time under high pressure. The results are summarized in a pressure-time-temperature-transformation (PTTT) diagram with two time scales.
X-ray diffractionWang, W. H.*; Wen, P.*; Zhao, D. Q.*; Pan, M. X.*; Okada, Taku; Utsumi, Wataru
Applied Physics Letters, 83(25), p.5202 - 5204, 2003/12
Times Cited Count：21 Percentile：61.6(Physics, Applied)no abstracts in English
AlFe
Co bulk metallic glass under high pressureZhao, D. Q.*; Pan, M. X.*; Wang, W. H.*; Wei, B. C.*; Okada, Taku; Utsumi, Wataru
Journal of Physics; Condensed Matter, 15(50), p.L749 - L753, 2003/12
Times Cited Count：9 Percentile：31.91(Physics, Condensed Matter)no abstracts in English
Wang, W. H.*; Okada, Taku; Wen, P.*; Wang, X. L.*; Pan, M. X.*; Zhao, D. Q.*; Utsumi, Wataru
Physical Review B, 68(18), p.184105_1 - 184105_6, 2003/11
Times Cited Count：34 Percentile：79.27(Materials Science, Multidisciplinary)no abstracts in English
Wang, Z. X.*; Zhao, D. Q.*; Pan, M. X.*; Wang, W. H.*; Okada, Taku; Utsumi, Wataru
Journal of Physics; Condensed Matter, 15(35), p.5923 - 5932, 2003/09
Times Cited Count：26 Percentile：73.68(Physics, Condensed Matter)no abstracts in English
B
Si
; *; *;
Journal of Non-Crystalline Solids, 88, p.388 - 394, 1986/00
Times Cited Count：7 Percentile：59.79(Materials Science, Ceramics)no abstracts in English
Journal of Non-Crystalline Solids, 68, p.17 - 32, 1984/00
Times Cited Count：4 Percentile：49.57(Materials Science, Ceramics)no abstracts in English
