20CrMo钢抽油杆H_2S腐蚀的裂纹成核及扩展机制研究

STUDY OF CORROSION CRACKING MECHANISM OF 20CrMo STEEL SUCKER RODS IN MEDIUMS CONTAINING H_2S

论述了20CrMo钢抽油杆试样经含H_2S介质腐蚀后,在加载同时,裂纹萌生、发展和试样断裂的动态过程,研究分析了H_2S介质对这一过程影响的微观机制。

By studying the dynamic initiation and extension mechanism of 20CrMo steel nowcommonly used for sucker rods in corrosive mediums containing H_2S, the author ex-plains the cause of sucker rod failure in such mediums.