The crack growth response of alloy 152 and 52 weld metals has been measured in simulated PWR primary water at both high (325-350°C) and low (50°C) temperatures. Tests were performed on samples machined from alloy 152 or 52 mockup welds. Propagation rates under cycle + hold and constant K conditions at high temperatures show stable, but extremely low SCC growth rates. The most significant intergranular cracking occurred during cycling at 50°C, particularly for the alloy 152 weld metal at high stress intensity.
Revised: February 10, 2012 |
Published: December 1, 2009
Citation
Toloczko M.B., and S.M. Bruemmer. 2009.CRACK GROWTH RESPONSE OF ALLOY 152 AND 52 WELD METALS IN SIMULATED PWR PRIMARY WATER. In 14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors, August 23-27, 2009, Virginia Beach, Virginia, 690-705. La Grange Park, Illinois:American Nuclear Society.PNNL-SA-72538.