Wear of nano-structured carbide-free bainitic steels under dry rolling-sliding conditions

Publikation: Forskning - peer-reviewTidskriftsartikel

Alejandro Leiro ; Esa Vuorinen ; Karl-Gustaf Sundin ; Braham Prakash ; T. Sourmail ; V. Samanio ; F.C. Caballero ; C. Garcia-Mateo ; Roberto Elvira

  • ASCOMETAL-CREAS
  • National Center for Metallurgical Research (CENIM-CSIC), Madrid
  • Gerdau Sidenor I+D
Specially designed steels with carbon contents from 0.6 to 1.0 wt.% were isothermally transformed at very low temperatures, between 220 and 270 °C, in order to obtain a nano-structured bainitic microstructure. It is shown that the wear resistance in dry rolling-sliding of these nano-structured steels is significantly superior to that ofbainitic steels transformed at higher temperatures with similar hardness values.In addition to the highly refined microstructure, the transformation under strain to martensite (TRIP effect), contributes to the plasticity of the nano-scaled steels, increasing surface hardness during testing, thus reducing the wear rate.
SpråkEngelska
TidskriftWear
Publiceringsdatum2013
Volym298-299
Tidskriftsnummer1
Sidor42–47
Sidantal6
ISSN0043-1648
DOI-länkar
StatusPublicerat