Journal of Materials Science and Technology 178 80-89 2024年4月 [査読有り]
The microstructural factors contributing to the high strength of additive-manufactured Al–Si alloys using laser-beam powder bed fusion (PBF-LB) were identified by in-situ synchrotron X-ray diffraction in tensile deformation and transmission electr...
Keikinzoku/Journal of Japan Institute of Light Metals 73(12) 628-632 2023年12月 [査読有り]
Type-B serrations were observed during room-temperature tensile deformation of Al-2.17mass%Mg alloy with an average grain size of 12 μm. Digital image correlation was used to visualize Portevin-Le Chatelier (PLC) bands, and microstructural changes...
Sukyoung Hwang Park Myeong-Heom Yu Bai Akinobu Shibata Hiroki Adachi Masugu Sato Nobuhiro Tsuji
International Symposium on New Developments in Advanced High-Strength Sheet Steels, AHSS 2023 119-124 2023年6月 [査読有り]
22Mn-0.6C (wt. %) high-Mn austenitic steel having fully recrystallized microstructure was obtained through 4 cycles of repeated cold-rolling and annealing process. Mechanical properties were evaluated by tensile test at an initial strain rate of 8...
This study investigated the cluster formation process in the early stages of 353 K aging in Al1.04 mass%Si0.55 mass%Mg alloys by means of soft X-ray absorption fine structure (XAFS) measurements and first-principles calculations. XAFS at the Si-K ...
The Plaston Concept: Plastic Deformation in Structural Materials 197-212 2022年1月 [査読有り]
Grain refinement is one of the methods applied to strengthen metallic materials, and various peculiar mechanical properties have been reported to be expressed when the grain size is reduced to less than submicron dimensions. This is considered to ...
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工学研究科