Paper Title:
Weld Quality Improvement with Hybrid FSW Technology Assisted by Preheating for Copper T2/Aluminium 5A06 Dissimilar Materials
  Abstract

Copper and aluminium alloy could be welded by friction stir welding (FSW) but it is quite difficult to achieve a defect-free welding joint for welding dissimilar materials because of the enormous difference of their thermo-physical performances. In this paper, another friction stir tool was applied as a heating source to preheat the copper side to 150~200°C in the welding direction. Preheating temperature can make up the lost heat, improve the temperature of copper plate before the FSW process, achieve the refining grains, and then obtain a high quality welding joint. We concentrated on hybrid heat-source equipments design and procedure optimization in our studies. The microstructure, mechanical properties and phase constituents of FSW joints were studied through mechanical test and metallographic analysis. The results indicated that the hybrid FSW technology with preheating for copper T2/aluminium 5A06 dissimilar materials can not only improve the welding efficiency, but also obtain the high quality welding joint. This special welding technology could solve the welding problems of Al-Cu dissimilar materials and had a good potential for application in aerospace manufacturing.

  Info
Periodical
Chapter
Chapter 3: Advanced Manufacturing Technology (2)
Edited by
Dongye Sun, Wen-Pei Sung and Ran Chen
Pages
1707-1711
DOI
10.4028/www.scientific.net/AMM.121-126.1707
Citation
X. Zhao, F. B. Dong, G. Y. Su, L. J. Guo, "Weld Quality Improvement with Hybrid FSW Technology Assisted by Preheating for Copper T2/Aluminium 5A06 Dissimilar Materials", Applied Mechanics and Materials, Vols. 121-126, pp. 1707-1711, 2012
Online since
October 2011
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Price
$32.00
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