Tohoku University Technology: Oxide dispersion strengthened alloys: T17-105
Oxide dispersion strengthened alloys with uniform dispersion of fine oxide particles can be fabricated by the additive manufacturing method!
Oxide dispersion strengthened alloy is an alloy where the hard oxide particles are dispersed inside the crystal grains of the metal matrix. By having more oxide particles inside the crystal grains of the matrix phase with uniform dispersion, it is difficult for the oxide particles to agglomerate or coarse even when exposed to a high-temperature environment for a long period of time, which makes difficult for the material to deteriorate its strength property. In the casting method, metallic liquid and oxide solids having different density are difficult to mix homogeneously, and oxide particles are pushed by the solid-liquid interface of solidification and agglomerate in the final solidified part, which prevents them from being uniformly dispersed in the matrix. In addition, the laser and electron beam additive manufacturing methods involve the powder particles melting process which causes the agglomeration of fine oxide particles and makes it difficult to disperse them uniformly inside the matrix. This invention solves the above problem and provides a technology that can fabricate oxide dispersion strengthened alloys with fine oxide particles uniformly dispersed inside the crystal grains of the matrix phase when using the additive manufacturing method.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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