Home Kovove Materialy-Metallic Materials 2016 Metallic Materials Vol. 54 (2016), no. 4, pp.241-247

Journal info

Select Journal

Webshop Cart

Your Cart is currently empty.

Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.

Metallic Materials Vol. 54 (2016), no. 4, pp.241-247

Title: Effect of welding speed on the mechanical properties and weld defects of 7075 Al alloy joined by FSW

Abstract: In this study, 7075-T651 Al alloys were joined by friction stir welding (FSW) at a fixed rotational speed and different welding speeds. The stirring tool used in the welding processes was comprised of a shoulder of 20 mm in diameter and modified M6 × 1 HSS hand taps used as pins. The FSW was performed at a rotational speed of 1600 rpm and at welding speeds of 20, 40, and 60 mm min–1. Mechanical and metallographic tests were carried out on the welded joints and the effects of the welding speed on the mechanical and metallurgical properties of the welded specimens were investigated. Welding speed significantly affected the microstructure and mechanical properties of the joining. Results showed that the average grain size of the weld nugget was reduced as welding speed was increased. In addition, it was found that high welding speed negatively affected the mechanical properties of the weld nugget.

Keywords: FSW, aluminium alloy, mechanical properties, micro defects, microstructure
Published online: 08-Jul-2016
Year: 2016, Volume: 54, Issue: 4 Page From: 241, Page To: 247

download file

© AEPress s.r.o
Copyright notice: For any permission to reproduce, archive or otherwise use the documents in the ELiS, please contact AEP.