3320 ラジカル窒化後ショットピーニングしたSNCM439鋼の超高サイクル疲労(S22 金属材料および実機の超高サイクル疲労,S22 金属材料および実機の超高サイクル疲労)
詳細
Super long-life fatigue tests were conducted for the rotating bending specimen shot-peened after radical nitrizing. Circular type, semicircular type fish-eyes and two fish-eyes at a fracture surface were observed. Fatigue life lengthen effect by combined surface treatment of radical nitrizing and shot-peening was not almost recognized.
