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ISRN Materials Science
Volume 2014 (2014), Article ID 489487, 5 pages
http://dx.doi.org/10.1155/2014/489487
Research Article

Fracture Surface Analysis in Thixojoined Tool Steels

Mining and Metallurgical Engineering Department, Amirkabir University of Technology, Tehran, Iran

Received 16 November 2013; Accepted 8 January 2014; Published 23 February 2014

Academic Editors: J. F. Bartolomé and J. Foct

Copyright © 2014 A. Kalaki et al. 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.

Abstract

Thixojoining has been developed for D2 and M2 tool steels. The suitable globular microstructure and excellent bonding quality are obtained through this work. Scanning electron microscopy (SEM) observation along the joint interfaces showed a smooth transition zone with no cracks. In addition, fracture surface of the shear test samples showed that the fracture mode was transgranular. Finally, based on obtained results, this method presented high quality joint with nonequilibrium diffusion interface.