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Effect of Tool Eccentricity on Microstructure and Properties of FSW Joints Made of Al 7075 T6 Alloy
 
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1
Polish Aviation Works (Polskie Zakłady Lotnicze Sp. z o.o.), Mielec, Poland
 
2
Rzeszów University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
 
 
Publication date: 2017-12-05
 
 
Corresponding author
Rafał Burek   

Polish Aviation Works (Polskie Zakłady Lotnicze Sp. z o.o.), ul. Wojska Polskiego 3, 39-300 Mielec, Poland
 
 
Adv. Sci. Technol. Res. J. 2017; 11(4):333-338
 
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ABSTRACT
The aim of this paper was to present preliminary results of researches conducted in PZL Mielec within the FAST_FSW project (INNOLOT program) on influence of tool eccentricity on microstructure and mechanical properties of 1.6 mm and 0.8 mm thick Al 7075 T6 sheets joints. Samples were performed using CNC milling machine. Range of tool eccentricity was 0-0.3 mm, rotational speed and feed rate were variable. The influence of applied welding parameters on microstructure and mechanical properties of joints was assessed on the basis of metallographic inspections and tensile tests. Microstructural observations have shown that the change of FSW tool eccentricity affects the weld geometry: the mixing zone depth, the weld width, or the shape of the contact line.
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