Experimental investigation on the effect of bainite traces on wear and rolling contact fatigue in ER8 railway wheel steel
Year: 2025
Type: article
Abstract: An experimental campaign was carried out to investigate the effect of bainitic islands in an ER8 steel for railway wheels. The specimens were extracted at different depths under the tread of a railway wheel, characterized by decreasing hardness and a bainite content. The tests were done with a bi-disc machine in dry rolling-sliding condition, in some cases followed by a wet contact session. Various measurement techniques were employed to evaluate wear, rolling contact fatigue and surface degradation.The results showed that, in dry condition, the prevailing damage was delamination wear, whereas, in the wet phase, shelling prevailed. None of the obtained data highlighted a detrimental effect of the bainitic content, in the concentrations considered in this study.
Source: Wear
Institutions: University of Brescia, Lucchini (Italy)
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,394
OpenAlex ID: W4412702207