Mechanical and microstructural behavior in friction stir welds of copper and brass

Sarvghad Moghaddam, Madjid (2014) Mechanical and microstructural behavior in friction stir welds of copper and brass. In Proceedings of Metal 2014: 23rd International Conference on Metallurgy and Materials, TANGER Ltd., Brno, Czech Republic, EU.

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Abstract

The effect of friction stir welding on the microstructure and mechanical properties of copper and Cu-30Zn brass alloy was investigated by choosing fixed rotational speed of 950 rpm with welding travel speeds of 190 and 235 mm/min for both the copper and brass alloys. Microstructural investigations showed very fine grains with some deformed grains in the stirred zone and some coarser grains in the thermo-mechanically affected zone and base metal; whereas, no obvious HAZ was detected in welds. Results show that the grain size profile, hardness values and mechanical strength were not highly affected by the welding travel speed. In fact, the mechanical properties of both copper and brass should be determined as a result of mutual interaction between involving mechanisms. Depending on welding parameters, either they mitigate each other or some of them overcome the others and form a certain hardness or strength behavior in welds.

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ID Code: 95932
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Friction stir welding, Mechanical properties, Microstructure, Copper, Brass
ISBN: 9788087294529
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014, TANGER Ltd.
Deposited On: 03 Jun 2016 01:30
Last Modified: 06 Jun 2016 00:05

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