spalling

A railway frog made of high manganese steel failed before an expected life due to spalling of the nose rail.

高锰钢铁路辙叉在使用过程中因心轨表面龟裂剥落而提前失效,对其进行了扫描电镜观察和能谱仪测试分析。

ZG-Mn13 cast steel, which is used in the railway frog, forms frequently the pitting spot even spalling on the surface due to the influence of alternate load and the corrosion atmosphere, which leads to the failure of the whole component.

ZG-Mn13铸钢铁路辙叉在使用过程中由于受到交变载荷和大气腐蚀的联合作用，经常在其表面形成龟裂剥落甚至掉块，进而造成整个辙叉的提前失效。