سال انتشار: ۱۳۹۱

محل انتشار: دومین کنفرانس بین المللی آلومینیوم

تعداد صفحات: ۴

نویسنده(ها):

Hamed Khosravi – M. Sc. Student.. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran
Seyed Reza Elmi Hosseini – Lecturer, Department of Materials Science & Engineering, Faculty of Engineering, University of Sistan and Baluchestan.

چکیده:

This paper aimed at studying the Friction Stir Welding (FSW) of Al–۷Si–۲Mg/10% SiCp metal matrix composites. The effects of tool rotational speed and the number of passes on the resultant microstructure and the final hardness of friction stir welded Al–۷Si–۲Mg/10% SiCp were studied. The microstructural studies were done using an Optical Microscopy (OM). Also, hardness test was performed in different regions of welded specimens. The results indicated an improvement in hardness of nugget zone in comparison to base metal due to the fragmentation of SiC particles, improved SiC distribution, and refined matrix. By increasing the tool rotational speed and number of passes, a finer matrix was achieved. Also the distribution of SiC particles was improved.