Crack growth rates of irradiated austenitic stainless steels in BWR environments at 289°c

被引：0
|
作者：
Chopra, O. K. [1 ]
Gruber, E. E. [1 ]
Alexandreanu, B. [1 ]
Chen, Y. [1 ]
Shack, W. J. [1 ]
机构：
[1] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA
来源：
PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE 2007, VOL 1: CODES AND STANDARDS | 2007年 / 1卷
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中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Crack growth rate (CGR) data have been obtained in boiling water reactor environments on several grades of austenitic stainless steels, including weld heat-affected-zone and cast materials, that were irradiated tip to 2.0 x 10(21) n/cm(2) (E > 1 MeV) (approximate to 3 dpa). Crack growth tests were conducted on 1/4-T compact tension specimens subjected to either a sawtooth waveform with load ratios up to 0.7 and rise times up to 1000 s, or a constant load with or without periodic partial unloading. The results indicate significant enhancement of crack growth rates in the irradiated steels. The results are compared with data obtained from other studies. The existing CGR data are also reviewed to evaluate the effects of material composition, irradiation, and water chemistry on the CGRs in austenitic SSs. The significance of specimen size criteria is discussed.
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页码：253 / 268
页数：16
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