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Thermal degradation of pearlitic steels: influence on mechanical properties including fatigue behaviour

Krste Cvetkovski (Institutionen för material- och tillverkningsteknik, Materialteknologi) ; Johan Ahlström (Institutionen för material- och tillverkningsteknik, Materialteknologi) ; Birger Karlsson (Institutionen för material- och tillverkningsteknik, Materialteknologi)
Materials Science and Technology (0267-0836 ). Vol. 27 (2011), 3, p. 648-654 .
[Artikel, refereegranskad vetenskaplig]

With the aim to predict the durability of railway wheels, thermomechanical damage was studied for two steels with different alloying levels of silicon and manganese in the temperature range of 500–725uC. Softening caused by cementite spheroidisation in pearlite leads to changes in the mechanical behaviour and an accompanying decrease in fatigue lifetimes. It was found that higher contents of Si and Mn lead to better resistance to softening of both virgin and plastically deformed material. Correspondingly, the high Si–Mn alloyed steel loses much less in fatigue lifetime than the lower alloyed steel.

Nyckelord: Annealing, Spheroidisation, Low cycle fatigue, Fe–Si–Mn, Railway, Deformation



Denna post skapades 2010-11-10. Senast ändrad 2014-09-02.
CPL Pubid: 128837

 

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Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Materialteknologi (2005-2017)

Ämnesområden

Övrig teknisk materialvetenskap

Chalmers infrastruktur