Thermal softening of fine pearlitic steel and its effect on the fatigue behaviour
Paper in proceedings, 2010

Associated with the durability of railway wheelsets, thermal damage was studied for two different steels in the temperature range 500 °C to 725 °C. Softening caused by cementite spheroidisation in the pearlitic materials leads to changes in the mechanical behaviour. It was found that higher contents of silicon and manganese leads to better resistance to softening. Correspondingly, softening leads to loss in fatigue life times at given stress amplitudes as read out from Wöhler curves. However the higher alloyed steel looses much less in fatigue life time than the less alloyed steel.

Fatigue

Spheroidization

Damage

Railway

Author

Krste Cvetkovski

Chalmers, Materials and Manufacturing Technology, Materials Technology

Johan Ahlström

Chalmers, Materials and Manufacturing Technology, Materials Technology

Birger Karlsson

Chalmers, Materials and Manufacturing Technology, Materials Technology

Procedia Engineering: 10th International Fatigue Congress, FATIGUE 2010; Prague; Czech Republic; 6 June 2010 through 11 June 2010

1877-7058 (eISSN)

Vol. 2 1 541-545

Subject Categories

Materials Engineering

DOI

10.1016/j.proeng.2010.03.058

More information

Created

10/7/2017