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Journal Articles

Contributions of multimodal microstructure in the deformation behavior of extruded Mg alloys containing LPSO phase

Hagihara, Koji*; Mayama, Tsuyoshi*; Yamasaki, Michiaki*; Harjo, S.; Tokunaga, Toko*; Yamamoto, Kazuki*; Sugita, Mika*; Aoyama, Kairi*; Gong, W.; Nishimoto, Soya*

International Journal of Plasticity, 173, p.103865_1 - 103865_21, 2024/02

https://doi.org/10.1016/j.ijplas.2023.103865
 Times Cited Count：7 Percentile：96.45(Engineering, Mechanical)

Journal Articles

Investigation of the electronic structure of the Mg$$_{99.2}$$Zn$$_{0.2}$$Y$$_{0.6}$$ alloy using X-ray photoelectron spectroscopy

Miyazaki, Hidetoshi*; Akatsuka, Tatsuyoshi*; Kimura, Koji*; Egusa, Daisuke*; Sato, Yohei*; Itakura, Mitsuhiro; Takagi, Yasumasa*; Yasui, Akira*; Ozawa, Kenichi*; Mase, Kazuhiko*; et al.

Materials Transactions, 64(6), p.1194 - 1198, 2023/06

https://doi.org/10.2320/matertrans.MT-MD2022019
 Times Cited Count：1 Percentile：18.99(Materials Science, Multidisciplinary)

We investigated the electronic structure of the Mg$$_{99.2}$$Zn$$_{0.2}$$Y$$_{0.6}$$ alloy using hard and soft X-ray photoemission spectroscopy and electronic band structure calculations to understand the mechanism of the phase stability of this material. Electronic structure of the Mg$$_{99.2}$$Zn$$_{0.2}$$Y$$_{0.6}$$ alloy showed a semi-metallic electronic structure with a pseudo-gap at the Fermi level. The observed electronic structure of the Mg$$_{99.2}$$Zn$$_{0.2}$$Y$$_{0.6}$$ alloy suggests that the presence of a pseudogap structure is responsible for phase stability.

Oral presentation

Development of Al-added high-Mn ODS austenitic steel for liquid metal environment

Kasada, Ryuta*; Wang, H.*; Liu, J.*; Yu, H.*; Kondo, Sosuke*; Okuno, Yasuki*; Okubo, Nariaki; Tokunaga, Toko*; Ono, Naoko*

no journal, , 

With the aim of applying to materials in accelerator driven systems (ADS) core and advanced blankets of fusion systems, a Fe-Mn-Cr-Al-C steel, low-activation austenitic steel, and its oxide dispersion-strengthened (ODS) alloy have been developing. By reviewing the composition of Fe-Cr-Mn-based low-activation austenitic steel that was once examined, the ODS alloy has become a material design that is conscious of twinning induced plasticity (TWIP) steel used as an automobile steel plate, and it aims to improve high temperature strength characteristics and irradiation resistance by ODS. This presentation shows the initial result of the influence of ODS on the strength characteristics and lead bismuth corrosion on the alloy design policy and materials prototyped at the laboratory level. In addition, some issues for application to advanced fusion system blankets are also discussed.

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