The longitudinal cracks of rail web which appeared during heating rail. The cracks have been analyzed by means of chemical composition analysis,JSM-5600LV scanning electron microscope inspection,INCA quantitative electron microanalysis and optical microscope examination. The results showed that the high temperature caused by heterogeneous heating on web during shaped rail machining had induced to overburning,cracks,grain boundary melting,and widmanstatten microstructure occurred at rail web.
引用该论文:WU Xiong-xian. ANALYSIS ON WORKING CRACKING OF RAIL[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2007, 43(2): 97~99 糖心产精国品免费入口*完整版. 糖心产精国品免费入口*完整版加工开裂原因分析[J]. 理化检验-物理分册, 2007, 43(2): 97~99