Journal of Materials Science and Technology 178 80-89 2024年4月
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...
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
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...
Keikinzoku/Journal of Japan Institute of Light Metals 73(12) 628-632 2023年
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...
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
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 ...