Experimental and numerical investigation of stress corrosion cracking of sensitized type 304 stainless steel under high-temperature and high-purity water

摘要

This paper deals with experimental and numerical investigation of stress corrosion cracking of stainless steel under simulated environment of boiling water reactors. Constant tensile load tests were conducted in high-temperature and high-purity water. The number and maximum length of cracks increase with increasing applied stress and testing time. The length of micro-cracks is normally-distributed with the mean of 54 mu m and standard deviation of 20 mu m, which are close to the grain diameter, irrespective of applied stress and testing time. The Monte Carlo simulation was conducted on the basis of the experimental results. The applicability of the simulation is discussed. (C) 2015 Elsevier Ltd. All rights reserved.