Original Paper (Vol.52 No.2)

Effects of Crystal Grain and Grain Boundary Sliding on the Deformation of Polycrystal
Ryoichi KAWAKAMI, Shoji IMATANI and Ryohei MAEDA	112
Effect of Heat Treatment on Creep Properties and Microstructures of HAZ for 9%Cr Ferritic Steel
Masakazu MATSUI, Masaaki TABUCHI, Takashi WATANABE, Kiyoshi KUBO and Fujio ABE	119
A Grain Size Dependence of a Creep Deformation of Tungsten Containing High Chromium Ferriric Creep Resistant Steel
Yasushi HASEGAWA, Taro MURAKI and Masahiro OHGAMI	124
Mechanism of Crack Initiation Induced by Oxide-Layer Cracking in High-Temperature Fatigue of the Nickel Base Single Crystal Superalloy CMSX-2
Naoya TADA, Ryuichi OHTANI and Atsuhide WADA	132
Influence of Corrosion Resistance Coating of Thermo-Mechanical Fatigue Life of Gas Turbine Blad Material IN738LC
Takashi OGATA and Akiyoshi NOMOTO	139
A New Concept Coating to Prevent the Fatigue Life Reduction due to Cellular Microstructure in CMSX-4 Subjected to Previous Damage -For Refurbishment Technology of Single Crystal Ni-Base Superalloys-
Masakazu OKAZAKI, Issei OHTERA and Yoshio HARADA	146
Crack Propagation Life Prediction of a Perforated Plate on the Basis of the Macroscopic Inelastic Behavior under Thermal Fatigue
Takumi TOKIYOSHI, Fumiko KAWASHIMA, Toshihide IGARI, Hironori KINO and Tetsuo TERAMAE	154
Creep-Fatigue Damage and Life Evaluation for Boiler Header Stub Weldment
Takuya ITO, Isamu NONAKA, Hideo UMAKI, Hidetaka NISHIDA and Shizuma SHINTANI	162
The Effect of Weld Repair on High Temperature Properties of Aged 2.25Cr-1Mo Steel
Yoshio TAKAGI, Shigeru OTSUKI, Takuya ITO and Isamu NONAKA	167
Application of Genetic Algorthms to Accelerated Determination of Material Parameters Needed in Creep-Fatigue Life Evaluation
Katsuyuki TOKIMASA and Satoshi TAKAHATA	173
Precipitation Behavior of Long Term Creep-Rupture in Low Carbon-Medium Nitrogen Type 16Cr-8Ni-2Mo Weld Metal
Hiromichi HONGO, Masayoshi YAMAZAKI, Takashi WATANABE, Tatsuhiko TANABE and Yoshio MONMA	179