Thermal degradation of pearlitic steels: influence on mechanical properties including fatigue behaviour
Artikel i vetenskaplig tidskrift, 2011

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.

Fe–Si–Mn

Deformation

Spheroidisation

Annealing

Low cycle fatigue

Railway

Författare

Krste Cvetkovski

Chalmers, Material- och tillverkningsteknik, Materialteknologi

Johan Ahlström

Chalmers, Material- och tillverkningsteknik, Materialteknologi

Birger Karlsson

Chalmers, Material- och tillverkningsteknik, Materialteknologi

Materials Science and Technology

0267-0836 (ISSN)

Vol. 27 648-654

Ämneskategorier

Annan materialteknik

DOI

10.1179/026708310X520538