Corrosion fatigue crack growth rates of Alloy 690 have been measured in air and simulated pressurizedwater reactor (PWR) environment, and environmental acceleration of fatigue crack growth is observed. The effects of loading parameters including loading ratio R, frequency f and amplitude of stress intensity factors ΔK have been discussed and summarized by the timedomain method. Furthermore, the obtained experimental results are compared with FA (FordAndresen) model and ANL (Argonne National Lab) empirical curve, and they could fit fairly well. Fracture surface morphology reveals tansgranular crack in air fatigue and tansgranular with intergranular crack in hotwater environment, which accords well with the description of FA model.
CHEN Kai,DU Donghai,ZHANG Lefu
. Corrosion Fatigue Crack Growth Behavior of Alloy 690 in
PressurizedWater Reactor Environment[J]. Journal of Shanghai Jiaotong University, 2017
, 51(11)
: 1281
-1286
.
DOI: 10.16183/j.cnki.jsjtu.2017.11.001
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