EVALUATION OF STRESS CORROSION RESISTANCE PROPERTIES OF 15CrMoR(H)IN H2S ENVIRONMENT
To evaluate the hydrogen resistant properties of the 15CrMoR(H)with new smelting process,according to NACE and National Standards,three tests including NACE standard tensile test,NACE standard bent-beam test and hydrogen induced cracking test are executed in saturated hydrogen sulfide(H2S)environment.Stress-life mathematical model of this material is given by analyzing and fitting the results of tensile test.Test results show that the threshold sth of tensile test is 0.7ReL(252MPa); the threshold nominal stress SC of bent-beam is higher than 4.5 ReL(1620MPa); for HIC test,the crack length rate CLR is 4.40%,the crack thickness rate CTR is 0.87%and the crack sensitive rate CSR is 0.04%.Compare with EFC standard,the safety margin of HIC test is 3.4,3.4 and 37.5 times respectively.All the experimental results show that the new 15CrMoR(H)material has excellent H2S environmental cracking resistance properties.
15CrMoR(H) Materials Stress Corrosion Hydrogen Induced Cracking H2S Environment
Yiliang Zhang Jing Wang Mingyao Wu Shurui Li Wenbin Liu
College of Mechanical Engineering and Applied Electronics Technology Beijing University of Technolog Wuhan Iron and Steel(Group)Corp.,Wuhan,430083
国际会议
Energy Materials 2014(第一届能源材料国际会议)
西安
英文
821-829
2014-11-04（万方平台首次上网日期，不代表论文的发表时间）