SB-06-5(036) Influence of Pre-Aging on Creep Rupture Strength of Tungsten Alloyed 9%Cr Ferritic Steel and Creep Damage Evaluation by Electrochemical Method(Changes in Microstructure 1)
スポンサーリンク
概要
- 論文の詳細を見る
The influence of pre-aging on creep rupture strength has been investigated to understand the creep damage mechanism of tungsten alloyed 9%Cr ferritic steel KA-STBA29/KA-STPA29. Additionally, we have also examined changes in strengthening factors during creep and thermal aging by a nano-indentation test. Experimental results revealed that the creep rupture strength of thermally aged materials decreased with prolonged pre-aging and that the decrease in solid-solution strengthening due to Laves phase precipitation caused the reduction of rupture strength. Based on the results, an electrochemical nondestructive procedure, which quantitatively detected the amount of Laves phase, has been proposed to evaluate creep damage accumulation in KA-STBA29/KA-STPA29. By this electrochemical method and a newly proposed parameter based on kinetics of Laves phase precipitation, a testing temperature or applied stress of creep-damaged materials can be nondestructively estimated with high accuracy.
- 一般社団法人日本機械学会の論文
- 2001-06-03
著者
-
Shoji Tetsuo
Tohoku University
-
KOMAZAKI Shin-ichi
Department of Materials Science and Engineering, Muroran Institute of Technology
-
KISHI Shigeo
Fracture Research Institute, Graduate School of Engineering, Tohoku University
-
Kishi Shigeo
Fracture Research Institute Graduate School Of Engineering Tohoku University
-
Komazaki Shinichi
Department Of Materials Science And Engineering Muroran Institute Of Technology
-
HIGUCHI Kojiro
Thermal Power Engineering Department, Tohoku Electric Power Co., Inc.
-
KOMAZAKI Shin-ichi
Muroran Institute of Technology
-
KISHI Shigeo
Tohoku University
-
KUMAZAWA Tetsuo
Akita Prefectural University
-
HIGUCHI Kojiro
Tohoku Electric Power Co., Inc.
-
SUZUKI Koshi
Tohoku Electric Power Co., Inc.
-
Higuchi Kojiro
Thermal Power Engineering Department Tohoku Electric Power Co. Inc.
-
Kumazawa Tetsuo
Department Of Machine Intelligence And Systems Engineering Akita Prefectural University
関連論文
- Determining the sizes of 3-D surface cracks using dipole model of a crack and Hall element measurements (特集 電磁非破壊検査工学の体系化)
- Sizing of 3-D Surface Cracks with Arbitrary Orientation
- Evaluation of Susceptibility to Hydrogen Embrittlement of 7075 Aluminum Alloy by Hydrogen Addition Using Flax-Treatment Method
- 4017 Several Techniques for Improving the Detection Probability of the Magnetic Camera
- Damage Evaluation of a Welded Joint in a Long-term Service-exposed Boiler by Using a Small Punch Creep Test
- Creep Life Prediction of Ni-Base Superalloy Used in Advanced Gas Turbine Blades by Electrochemical Method
- Stress Intensity Effect on Solid State Oxidation of Ni-Cr Alloy with Different Chromium Concentrates
- Thermal Aging Embrittlement of Tungsten-Alloyed 9% Cr Ferritic Steels and Electrochemical Evaluation
- Small Punch Creep Behavior of Service-Exposed SUS 316 HTB Superheater Boiler Tube(High Temperature Materials)
- Size Effect of Copper Precipitation Particles on Electrochemical Nanoscopic Galvanic Behavior in Cu-Added Ultra Low Carbon Steel
- Foreword(Special Issue on strength and Fracture, and Experimental Mechanics)
- Influence of Pre-Aging on Creep Rupture Strength of Tungsten Alloyed 9%Cr Ferritic Steel and Creep Damage Evaluation by Electrochemical Method(Special Issue on Creep and Fatigue at Elevated Temperatures)
- SB-06-5(036) Influence of Pre-Aging on Creep Rupture Strength of Tungsten Alloyed 9%Cr Ferritic Steel and Creep Damage Evaluation by Electrochemical Method(Changes in Microstructure 1)