Friction between pearlitic steel surfaces
Paper in proceedings, 2018

Experiments rubbing two pearlitic rail steel surfaces against each other were done using an axial-torsion test rig. After the experiments were completed, the surfaces were observed under stereomicroscope, and the wear debris were examined. The aim of the experiments was to evaluate the variation of friction coefficient between two surfaces of pearlitic rail steel, mimicking the friction which occurs between the faces of a crack during Rolling Contact Fatigue (RCF) loading. For both dry and wet conditions, the sliding velocity, the angles of rotation, and the average normal force were varied. It was found that the most significant effect of changing angles of rotation is on the formation of ridges on the contact surface with large angles, leading to a higher friction coefficient. The presence of water reduces the friction coefficient and leads to less deformation and wear in the contact surface.

rail-wheel tribology

rolling friction

Rail steel

third-body layer

sliding wear

Author

Casey Jessop

Chalmers, Industrial and Materials Science, Engineering Materials

Johan Ahlström

Chalmers, Industrial and Materials Science, Engineering Materials

Proceedings - 11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems

431-437

11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems
Delft, Netherlands,

Research into enhanced tracks, switches and structures (In2Track)

European Commission (Horizon 2020), 2016-12-01 -- 2020-12-31.

Subject Categories

Mechanical Engineering

Materials Engineering

Areas of Advance

Transport

Materials Science

More information

Latest update

1/18/2019