Effects of Fe addition on the snoek-type damping behavior of surface-oxidation-treated Ti-Mo alloys
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Effects of Fe addition on the oxygen diffusion and the Snoek-type relaxation damping behavior of the Ti-15 wt pct Mo alloy were investigated in this study. After surface oxidation treatment, the Ti-15 wt pct Mo-1 wt pct Fe alloy exhibits a higher damping capacity compared to the Ti-15 wt pct Mo alloy. The dual-phase zone and the oxygen-enriched β-phase zone in the surface-oxidation-treated Ti-Mo alloys were determined by electron backscattered diffraction (EBSD) and hardness measurements. Based on the oxygen distributions in both alloys obtained through a diffusion model, the relative damping capacity of different zones contributing to the beam sample damping was estimated to be proportional to the thickness of the oxygen dissolved zones. On the other hand, the substitutional solute of Fe in the Ti-Mo-Fe alloy is considered to affect the oxygen distribution by lengthening the oxygen diffusion zone and increasing the oxygen concentration in this zone. As a result, the addition of Fe in Ti-Mo alloy improves the damping capacity of the surface-oxidation-treated alloys.
論文 | ランダム
- カラー・グラビア 安藤忠雄の世界
- 再開発 旧同潤会青山アパート建て替えプロジェクト ふらりと立ち寄って士気を高める (特集 建築の醍醐味--プロセスに見る ものづくりの魅力(前編))
- 安藤忠雄氏に聞く 建築の面白さはプロセスにある (特集 建築の醍醐味--プロセスに見る ものづくりの魅力(前編))
- 風土に学ぶ, 『風土-人間学的考察』, 和辻哲郎著, 岩波書店(岩波文庫), ISBN4003314425, 1979(II 初学者に薦める本,建築を学ぶ人たちへ)
- 作品 石川県西田幾多郎記念哲学館--安藤忠雄建築研究所