PWSCC in Alloy 600 and Alloy 182, 132 and 82 weld metals is important because these materials are widely used in the PWR coolant system. Plant experience indicates that PWSCC will steadily increase as plants age without effective mitigation. This study is investigating the mitigation of PWSCC initiation and propagation by adjusting the current operating PWR primary water chemistry, including dissolved hydrogen, lithium and boron concentrations, the pH at temperature, and Zn additions.

Subject
Primary water, Crack growth, Water, Materials, Nickel based alloys, Water chemistry, Constants, Crack length, Fugacity, Stainless steel, Alloys, Corrosion potential, Stress corrosion cracking
Keywords:
Stress corrosion cracking, Alloy 600, Ni alloys, water chemistry, dissolved hydrogen, high temperature water
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2008
Association for Materials Protection and Performance (AMPP)
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