Effect of Cl- Concentration on the SCC Behavior of 13Cr Stainless Steel in High-Pressure CO2 Environment
来源期刊：Acta Metallurgica Sinica2019年第12期
论文作者：Jin-Jin Zhao Xian-Bin Liu Shuai Hu En-Hou Han
文章页码：1459 - 1469
摘 要：An effect of Cl-concentration on the stress corrosion cracking（SCC） behavior of 13 Cr stainless steel was investigated by employing electrochemical measurements and the slow strain rate tensile tests.These tests were conducted in various solutions with different concentrations of NaCl at 90℃under 3 MPa CO2 with 3 MPa N2.The results indicate that the passive film of the specimen formed in the 10% NaCl solution has the best protective effect on the matrix.The SCC susceptibility does not increase with increasing the chloride ion concentration,the lowest SCC susceptibility occurs when the NaCl concentration is 10%,and the specimens show higher SCC susceptibility in the 5% NaCl and 20% NaCl solutions.
Jin-Jin Zhao1,2，Xian-Bin Liu1，Shuai Hu1,2，En-Hou Han1
1. National Engineering Center for Corrosion Control,Institute of Metal Research,Chinese Academy of Sciences2. School of Materials Science and Engineering,University of Science and Technology of China
摘 要：An effect of Cl-concentration on the stress corrosion cracking（SCC） behavior of 13 Cr stainless steel was investigated by employing electrochemical measurements and the slow strain rate tensile tests.These tests were conducted in various solutions with different concentrations of NaCl at 90℃under 3 MPa CO2 with 3 MPa N2.The results indicate that the passive film of the specimen formed in the 10% NaCl solution has the best protective effect on the matrix.The SCC susceptibility does not increase with increasing the chloride ion concentration,the lowest SCC susceptibility occurs when the NaCl concentration is 10%,and the specimens show higher SCC susceptibility in the 5% NaCl and 20% NaCl solutions.
关键词：
