张敏, 王为波, 周永欣, et al. Influence of Work Hardening on Railway Frog Surface Spalling of 1.14C-12.72Mn High Manganese Steel[J]. Special Steel, 2005, 26(3): 45-47.
张敏, 王为波, 周永欣, et al. Influence of Work Hardening on Railway Frog Surface Spalling of 1.14C-12.72Mn High Manganese Steel[J]. Special Steel, 2005, 26(3): 45-47.DOI:
The railway frog made of 1. 14C- 12.72Mn high manganese steel has excellent work- hardening behavior
but it often fails ahead of expected using life because of nose rail spalling during service. It showed by analysis on fracture of railway frog that corrosion- fatigue failure led to surface spalling of frog
and the corrosion- fatigue resistance decreased due to the inclusions of Al₂ O
and Calcium aluminate existed in surface structure and with work hardening the surface high hardness and formed thick and dense slip line band
and with the surface hardness of high manganese steel increased by big mar- gin
the toughness and plasticity of steel obviously decreased led to frog surface spalling. Increasing cleanliness of steel
adding anti- corrosion element Ni and Cu and microalloying of steel are main measures to prevent frog surface spalling.