Home Archive News Contact
PDF download
Cite article
Share options
Informations, rights and permissions
Issue image
Vol 14, Issue 1, 2023
Pages: 83 - 90
Review paper
Metallic materials
See full issue

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 

Metrics and citations
Abstract views: 46
PDF Downloads: 26
Google scholar: See link
Article content
  1. Abstract
  2. Disclaimer
Published: 01.05.2023. Review paper Metallic materials

RELATIONSHIP OF MICROSTRUCTURAL TRANSFORMATIONS IN AUSTEMPERED NODULAR CAST WITH MICROHARDNESS VALUES

By
Adisa Burić ,
Adisa Burić
Contact Adisa Burić

Institute "Kemal Kapetanović" in Zenica, University of Zenica , Zenica , Bosnia and Herzegovina

Belma Fakić ,
Belma Fakić

Institute "Kemal Kapetanović" in Zenica, University of Zenica , Zenica , Bosnia and Herzegovina

Edib Horoz ,
Edib Horoz

Institute "Kemal Kapetanović" in Zenica, University of Zenica , Zenica , Bosnia and Herzegovina

Hasan Avdušinović ,
Hasan Avdušinović

Faculty of Engineering and Natural Sciences, University of Zenica , Zenica , Bosnia and Herzegovina

Raza Sunulahpašić
Raza Sunulahpašić

Faculty of Engineering and Natural Sciences, University of Zenica , Zenica , Bosnia and Herzegovina

Abstract

Austempered ductile iron is the last addition to the group of ductile irons obtained by isothermal
improvement of classic ductile iron. Austempered nodular cast iron has improved mechanical
properties and a different matrix microstructure compared to known iron-based castings. This
type of casting is obtained by isothermal improvement - austempering, whereby the resulting
microstructure consists of a mixture of ausferitic (acicular) ferrite and residual, isothermally
transformed, carbon-enriched, stable, austenite. Changing the austempering parameters
(temperature and time of austenitization and isothermal transformation) affects the obtained
ausferite microstructure, and thus the mechanical properties. The most influential parameter that
affects the mechanical properties of austempered ductile iron is the isothermal transformation
temperature. This paper will present the relationship between microhardness values and
microstructural transformations in the material due to the effect of elevated temperatures.

References

1.
Harding. R.A.:The production, properties and automotive applications of austempered ductile.
2.
3.
Zhang JW, Zhang N, Zhang MT, Lu LT, Zeng DF, Song Q. P.: Microstructure and mechanical properties of austempered ductile iron with different strength grades. Materials Letters. 2014;119:47–50.
4.
Rainović D.:„Uticaj mikrostrukture na prelaznu temperaturu ADI materijala“. In: Doktorska disertacija, Fakultet tehničkih nauka. 2015.
5.
Vuković G. Erozijsko trošenje izotermički poboljšanog te naknadno sačmarenog nodularnog lijeva, Završni rad, Fakultet strojarstva i brodogradnje. 2008;
6.
Gagne M. The Sorelmetal handbook of Ductile Iron. 2004.
7.
Avdušinović H. Utvrđivanje optimalnih parametara proizvodnje odlivaka od austemperovanog nodularnog liva različite debljine stijenke, Doktorska disertacija, Fakultet za metalurgiju i materijale. 2010;
8.
Dervišić Š. Utvrđivanje optimalnih parametara proizvodnje odlivaka od austemperovanog nodularnog liva različite debljine stijenke, Doktorska disertacija, Fakultet za metalurgiju i materijale. 2010;

The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.