Original Paper (Vol.62 No.12)

Factors Affecting Strength in Surface and Sub-surface Fracture of Ti-6Al-4V Alloy
Hiroyuki OGUMA and Takashi NAKAMURA	731
Thickness Effect of Interlayer on Fatigue Behavior and Fatigue Fracture Mechanisms in A5052 Aluminum Alloy with DLC/Thermally Sprayed WC-12Co Hybrid Coatings
Toshifumi KAKIUCHI, Yoshihiko UEMATSU, Makoto TAKEKAWA, Takema TERATANI, Yoshifumi KOBAYASHI and Yoshio HARADA	738
Effect of Strain-Induced Martensitic Transformation on High Cycle Fatigue Behavior in Cyclically-Prestrained Type 304
Yoshihiko UEMATSU, Toshifumi KAKIUCHI, Masayuki AKITA, Masaki NAKAJIMA, Yuki NAKAMURA and Takumi YAJIMA	744
Fatigue Damage Assessment of SUS316NG based on Surface Roughness Measurement and the Applicable Scope
Nao FUJIMURA, Takashi NAKAMURA, Hiroyuki OGUMA, Tomohiro NAKAJIMA and Tomoki SHINKO	750
Aging Condition for Improvement of Fatigue Properties of Maraging Steel
Norio KAWAGOISHI, Yuzo NAKAMURA, Kohji KARIYA, Qiang CHEN, Takanori NAGANO and Yoshikazu MAEDA	756
Study of Fatigue Strength on Shearing Edges of Hot-Rolled High Strength Steel Sheet
Masao KINEFUCHI and Takayuki KITAMURA	764
Influence of Strength Level of Steel on Fatigue Strength and Fatigue Fracture Mechanism of Spot Weld-Bonded Joints
Tomoyuki FUJII, Keiichiro TOHGO, Takahiro YAMAMOTO, Yukinori SUZUKI ,Yoshinobu SHIMAMURA and Yoshifumi OJIMA	770