PREDICTION OF LONG-TERM CREEP-FATIGUE LIFE OF STAINLESS STEEL WELDMENT BASED ON MICROSTRUCTURE DEGRADATION

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概要

• 論文の詳細を見る

• This paper describes a newly developed analytical method for the evaluation of creep-fatigue strength for stainless weld metal. Based on the observation that creep-fatigue crack initiated adjacent to the interface of σ-phase/δ-ferrite and matrix, a mechanical model, which allowed the evaluation of micro stress/strain concentration adjacent to the interface, was developed. Fatigue and creep damages were evaluated, using the model which described the microstructure after long time exposure to high temperatures. It is concluded that one major scope of this model is to predict analytically long term creep/fatigue life of stainless steel weld metals, the microstructure of which has been degraded as a result of in-service high temperature exposure.

• 社団法人日本材料学会の論文
• 1997-09-15

著者

• Asayama T

  Oarai Engineering Center Power Reactor And Nuclear Fuel Development Corporation

• Asayama Tai

  Oarai Engineering Center Power Reactor And Nuclear Development Corporation

• HASEBE Shinichi

  Oarai Engineering Center, Power Reactor and Nuclear Fuel Development Corporation

• Hasebe S

  Oarai Engineering Center Power Reactor And Nuclear Fuel Development Corporation

• Hasebe Shinichi

  Oarai Engineering Center Power Reactor And Nuclear Development Corporation

関連論文

• PREDICTION OF LONG-TERM CREEP-FATIGUE LIFE OF STAINLESS STEEL WELDMENT BASED ON MICROSTRUCTURE DEGRADATION
• MICROSTRUCTURE DEGRADATION IN STAINLESS STEEL WELD METALS DUE TO THERMAL AND MECHANICAL HISTORIES

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