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A Study on the Corrosion and Fatigue of Structural Materials for Rolling Stock  

Jang Se-Ky (한국철도기술연구원, 미래기술실용화사업단)
Kim Yong-Ki (한국철도기술연구원, 미래기술실용화사업단)
Coo Byeong-Choon (한국철도기술연구원, 차량기계연구본부)
Publication Information
Journal of the Korean Society for Railway / v.8, no.4, 2005 , pp. 299-307 More about this Journal
Abstract
In general, structural integrity of rolling stock structures should last more than 25 years. During the lifetime corrosive degradation occurs. For structural design and diagnosis, quantitative relationship between corrosive degradation and variation of mechanical properties such as tensile strength and fatigue strength is needed. In this study, first of all we established the atmospheric corrosion test procedure. At regular intervals using specimens of SM490A and SS400 on the atmospheric corrosion test bed, we carried out tensile and fatigue tests. The fatigue strength decreases as the atmospheric corrosion period increases. In addition we studied the effect of post-weld heat treatment on the tensile and fatigue behaviour and performed electrochemical corrosion tests.
Keywords
Corrosion; Electrochemical Corrosion Test; Fatigue; Mechanical Properties; Tensile test; Rolling Stock;
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