欢迎登录材料期刊网
MU Ensheng LIN Jizhong WU Yushu HU Yixiang CHENG Zhaoyin **Dept.of Metals and Chemistry , China Academy of Railway Sciences , Beijing 100081 , China*** Center Laboratory , Dalian Locomotive Factory of Railway Ministry , Dalian , 116021 , China+ To whom correspondence s
材料科学技术（英文）
This paper introduces a modified control cir- cuit of static tensile stage of Cambridge S-200 SEM.The function of the stage is extended to that of a tensile/compressive dynamic fatigue testing stage.It can be used for studying fatigue micro characteristic and crack growth.Direct observa- tions of small crack growth behaviour were carried out under the SEM with modified stage.Results showed the various stages in the development of a crack.
关键词: SEM , null , null
ZHOU Qingyue ZHO U Chenguang China Academy of Railway Sciences , Beijing , China Engineer , Metal and Chemistry Research Institute , China Academy of Railway Sciences , Beijing 100081 , China
金属学报(英文版)
The subcritical propagation of fatigue cracks and the microstructure of rail steel with relation to stress ratio have been studied.The effect of mierostrueture of the rail steel on their fatigue lives has been discussed.
关键词: rail steel , null , null , null
