PS15 環状切欠試験片を用いたひずみ制御高温クリープ・疲労重量条件下におけるP92鋼のき裂成長寿命の繰返し速度特性(フェロー賞対象ポスターセッション)

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  • PS15 The Characteristics of Load Frequency on the Crack Growth Life of a Circular Notched Specimen under Strain Control Creep-Fatigue Conditions for P92

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W strengthened 9Cr ferritic heat resistant steel has been applied to boiler materials for the most efficient electric power plant technology and it will be used under the conditions of high temperature creep-fatigue multiplication. In this study, mechanical tests under the conditions of high temperature creep-fatigue multiplication were conducted for W strengthened 9%Cr ferritic heat resistant steels (ASME-Code P92) with various stress holding time conditions. Based on these results, the characteristics of load frequency of crack growth life were investigated by analyzing cycle-dependent and time-dependent mechanisms on the characteristic of load frequency of crack growth life.

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