OS0732 Development of Elevated Temperature Structural Design Method for Fast Reactor Vessels : Part 4: Effect of Ratcheting Strain on 316FR Creep-Fatigue Strength

Nobuchika KAWASAKI,Shingo DATE,Koichi KIKUCHI,Nobuhiro ISOBE,Naoto KASAHARA

M&M Zairyo Rikigaku Kanfarensu（2009）

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摘要

The effect of ratcheting strain on creep-fatigue strength was investigated in order to adjust the strain limit. Ratcheting creep-fatigue tests were conducted at 600℃ with lhr hold time. Creep fatigue lives did not decrease when the accumulated strain was superimposed within 5%. Therefore the effect of ratcheting on creep-fatigue strength is negligible when accumulated strain exceeds 2%.

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