The University of Tokyo · Materials Science
Professor Huilong Yang's research lab specializes in the development and characterization of advanced metallic materials, with a focus on zirconium-based alloys and their interfacial behavior in high-temperature applications. The lab investigates alloying effects, solid-state diffusion bonding, and intermetallic phase formation to enhance mechanical properties and microstructural stability. Key research directions include solid-solution and precipitation strengthening mechanisms, interfacial diffusion kinetics, and the role of elemental additions (e.g., Mo, Cr, Nb) in grain refinement and phase control. The lab employs advanced characterization techniques such as electron backscatter diffraction, transmission electron microscopy, and tensile testing to correlate microstructure with mechanical performance.
Figures are computed from collected data and may differ slightly.
The alloying effects of Sn, Nb, Cr, and Mo on zirconium alloys were elucidated and compared. Electron backscatter diffraction, transmission electron microscopy, tensile test, and fractographic observation were jointly utilized to carry out detailed microstructural characterization and mechanical property evaluation. Results show that Mo is the most effective among these elements from the viewpoints of strengthening and reducing grain size. The strengthening mechanism for each element is also dis
Solid-state diffusion bonding between pure Cr and Zircaloy-4 (Zry4) was studied with and without 316 stainless steel (SS) as an interlayer at temperatures ranging from 1203 to 1573 K, followed by the detailed microstructural analysis and mechanical property evaluation at the bonding interfaces. For the samples directly bonded between Cr and Zry4, two regions were confirmed at the diffusion interface. One was a continuous block of Zr2Cr intermetallic compound formed by the inter-diffusion of Cr a
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