Friction between pearlitic steel surfaces
Paper i proceeding, 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

Författare

Casey Jessop

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Johan Ahlström

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

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,

In2Track

Europeiska kommissionen (Horisont 2020), 2016-12-01 -- 2020-12-31.

Ämneskategorier

Maskinteknik

Materialteknik

Styrkeområden

Transport

Materialvetenskap

Mer information

Senast uppdaterat

2019-01-18