1010 界面靭化TiAlN皮膜の最適化膜厚によるTiAl合金の高温最高疲労強度の改善(オーガナイズドセッション : 表面改質材の機械的安全性保証)

概要

論文の詳細を見る
The fatigue property of TiAl intermetallic alloy coated with TiAlN film which changed the film thickness by the physical vapor deposition (PVD) was studied in vacuum at 1073K. The crack initiation and crack growth was observed and photographed under high resolution condition using elevated-temperature loading cyclic stage for the scanning electron microscope. The results indicated that the highest fatigue strength was the 3μm film thickness, followed by the 10μm one and the lowest was the 1μm one at 1073K. These results can be interpreted by the effect of surface restraint by TLAlN film and crack growth behavior based on Griffith theory. Therefore the fatigue property of TiAl alloy which was conducted the optimum film thickness was controlled by meso-structure.
一般社団法人日本機械学会の論文
2001-09-20