The effect of loading, corrosion potential, water purity, and heat treatment condition on stress corrosion crack growth rate behavior of alloy X750 (AH and HTH and annealed + 20% cold work) and alloy 718 was investigated in 288 °C water. These studies provide quantitative data on the behavior of alloy X750 and alloy 718 in well-defined water chemistry using modern experimental techniques, and provide some insight into the role of yield strength on other iron and nickel base materials whose yield strength is varied by cold work or irradiation.

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