| 25G客车车轮踏面缺陷分析 |
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| 引用本文： | 陈虎,陈刚. 25G客车车轮踏面缺陷分析[J]. 理化检验(物理分册), 2001, 37(5): 210-213 |
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| 作者姓名： | 陈虎 陈刚 |
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| 作者单位： | 1. 马钢质监中心,
2. 马钢钢研所, |
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| 摘 要： | 在役25G特快客车用巴西和马钢的车轮上均出现横向裂纹、剥离和剥落等缺陷。对缺陷车轮进行了分析，认为热裂纹源于马氏体层中的微裂纹；近表层区域的应力状态决定了热裂纹的扩展形态，热裂纹扩展的结果导致剥离、剥落缺陷的出现。
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| 关 键 词： | 车轮 踏面缺陷 失效分析 25G客车 横向裂纹 马氏体层 |
| 文章编号： | 1001-4012(2001)05-0210-04 |
| 修稿时间： | 2001-02-09 |
ANALYSIS OF THE DEFECTS ON THE WHEEL TREADLE OF THE 25G RAILWAY PASSENGER CARS |
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| CHEN Hu. ANALYSIS OF THE DEFECTS ON THE WHEEL TREADLE OF THE 25G RAILWAY PASSENGER CARS[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2001, 37(5): 210-213 |
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| Authors: | CHEN Hu |
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| Abstract: | Transverse crack, spalling, shelling and other kinds of defects were found on both Brazil and Maanshan lron and steel made wheel treadles of the 25G high speed passenger cars. Structure examination showed that marteasite was formed in treadle surface layer. Propagation of microcracks in marteasite, due to surface stress state of wheel treadle, resulted in transverse crack, spalling and shed of treadle surface. |
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| Keywords: | Wheel Defects on the treadle surface Failure analysis |
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