Speaker
Description
Titanium materials have been applied to beam window materials and beam dumps in large accelerator systems because of their low specific gravity, high corrosion resistance, strength, and other advantages. As beams become more powerful, there is a growing demand for higher irradiation resistance and other properties. We have been further characterizing titanium alloys based on the β-phase, and have found that the Ti-15-3-3-3 alloys have excellent irradiation resistance properties when subjected to ion irradiation. In order to investigate the cause of this, we are also evaluating the microstructure and point defects of this material and related materials by TEM, positron lifetime measurement, and stress-induced changes. In addition, we have recently begun to evaluate the properties of titanium-based high-entropy alloys based on β-titanium, which have been attracting worldwide attention and are being developed as high-entropy alloys. The properties of this material have been investigated, and it is becoming clear that it has considerably higher strength than conventional iron- and titanium-based materials.
| Themes for the contribution | 1 R&D to support concepts |
|---|
