文献类型：会议论文

英文题名：Comparison of fatigue crack growth rates of 17-4PH, 1Cr13 and 2Cr13 in chloride environment

作者：Hao, JW; Tang, SH; Pan, HL

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

会议论文集：3rd Annual Meeting of the Fracture-Mechanics-Group

会议日期：NOV 02-05, 2005

会议地点：Zhengzhou Univ, Zhengzhou, PEOPLES R CHINA

主办单位：Zhengzhou Univ

语种：英文

外文关键词：corrosion fatigue; Cl; crack growth; 17-4PH; 1Cr13; 2Cr13

摘要：The shafts made of 17-4PH in extruder drier often lose their serviceability under combined effects of both corrosion and repeated stresses. In this paper, in order to find out an alternative material which has a good resistance to. corrosive fatigue damage, the non-symmetric cyclic experiments with r=0 were carried out on three kinds of materials of 17-4PH, 1Cr13 and 2Cr13 in laboratory air and chloride environments at room temperature. The research work has demonstrated that the fatigue crack propagation is slower in chloride solution than that in air environment. Comparisons of fatigue crack growth rates among these three kinds of materials have suggested that 17-4Ph is susceptible to corrosion damage in an aggressive environment. However, the stainless steel 2Cr13 has a better resistance to the corrosive fatigue damage and can be used as an alternative material working under the combined action of an alternating stress and a corrosive environment.