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The microstructure and mass transport during friction welding of ductile cast iron

Mieczysław Kaczorowski (Institute of Mechanics and Design, Warsaw University of Technology, Warsaw, Poland)
Radosław Winiczenko (Department of Production Engineering, Warsaw University of Life Sciences, Warsaw, Poland)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 14 June 2013

234

Abstract

Purpose

The results of a study of friction welding of ductile cast iron using stainless steel interlayer are presented. Based on the microstructure evolution at the region close to the ductile cast iron‐stainless steel interface, the phenomena accompanying the process of joining were evaluated. Therefore, the purpose of this paper is to take a closer look into metallurgical phenomena accompanying the friction welding of ductile cast iron.

Design/methodology/approach

In this paper, ductile cast iron and austenitic‐stainless steel are welded using the friction welding method. The tensile strength of the joints was determined using a conventional tensile test machine. Moreover, the hardness across the interface ductile cast iron‐stainless steel interface was measured on a metallographic specimen. The microstructure of the joints was examined using light metallography as well as electron microscopy. In this case, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were applied. Energy Dispersive X‐ray analysis (EDS) was carried out across the section of friction welded ductile iron‐stainless steel interface.

Findings

On the basis of careful analysis of experimental data it was concluded that the process of friction welding was accompanied with diffusion of Cr, Ni and C atoms across the ductile cast iron‐stainless steel interface. This leads to an increase of carbon concentration in stainless steel where chromium carbides were formed, the size and distribution of which was dependent on the distance from the interface.

Originality/value

The main value of this paper is to contribute to the literature on friction welding of ductile cast iron.

Keywords

Citation

Kaczorowski, M. and Winiczenko, R. (2013), "The microstructure and mass transport during friction welding of ductile cast iron", Industrial Lubrication and Tribology, Vol. 65 No. 4, pp. 251-258. https://doi.org/10.1108/00368791311331248

Publisher

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Emerald Group Publishing Limited

Copyright © 2013, Emerald Group Publishing Limited

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