Autors: Mishev, V. P., Kaleicheva, J. A., Anchev, V. C., Karaguiozova, Z. K.
Title: Effect of Nanosized Particles on the Bainitic Transformation in Austempered Ductile Irons
Keywords: nanoparticles, cast irons, bainite, retained austenite

Abstract: The austempered ductile iron was austenitized at 900oC for 1 h and quenched in an isother-mal quenching furnace at 380 oC, 0,5 h, 1 h, 2 h, 4 h, 6 h. This paper aims to investigate the effects of nanosized particles (50nm) of titanium carbite+titanium nitride (TiCN+TiN), titani-um nitride (TiN) and cubic boron nitride (cBN) on the bainitic transformation in austempered ductile irons (ADI). The samples upper bainitic microstructure is studied by metallographic mi-croscope (OM), X-ray diffractometer (XRD) and scanning electron microscope (SEM). The in-fluence of the nanosized additives on the kinetic of the bainitic transformation and on the morphology of the bainitic structure is investigated. The abrasive wear testing and hardness measurements are carried out. It is established that the presence of nanoadditives in the bainitic cast irons leads to the changes in their microstructure which increases their abrasive wear resistance.



    IOP Conference Series: Materials Science and Engineering, 9th International Scientific Conference - Research and Development of Mechanical Elements and Systems (IRMES 2019), vol. 659, issue 1, pp. Article number 012041, 2019, Serbia, IOP Publishing Ltd., DOI 10.1088/1757-899X/659/1/012041

    Copyright IOP Publishing Ltd.

    Вид: публикация в международен форум, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus и Web of Science