CRACK GROWTH OF 316 STAINLESS STEEL IN SUPERCRITICAL WATER
A crack growth rate test on a compact tension specimen of type 316 stainless steel was conducted in pure water under both subcritical and supercritical conditions. The crack growth rate during the test was measured by the reversed direct current potential drop technique. Crack growth increased between 288℃ and 360℃ by a factor of 2. Shifting the water condition from subcritical to supercritical at 400℃ significantly reduced the stress corrosion crack growth rate. The crack growth rate was further suppressed by temperature increases to 450℃ and 500℃ under supercritical conditions. In addition, the effect of dissolved oxygen was to lower the crack growth rate compared to the deaerated case. The drop in crack growth rate with temperature is believed to be due to crack blunting due to rapid oxidation.
Q.Peng S. Teysseyre G.S.Was
University of Michigan
国际会议
上海
英文
326
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）