Effects of Post-Weld Heat Treatment on the Mechanical Properties of Similar- and Dissimilar-Alloy Friction Stir Welded Blanks

2011 ◽  
Author(s):  
Amir Abbas Zadpoor ◽  
Jos Sinke ◽  
Francisco Chinesta ◽  
Yvan Chastel ◽  
Mohamed El Mansori
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Post Weld Heat Treatment ◽  
Friction Stir ◽  
Friction Stir Welded Blanks ◽  
Weld Heat

Effects of post-weld heat treatment on mechanical properties of friction stir welded 6000Al alloy

2004 ◽  
Vol 2004 (0) ◽  
pp. 71-72
Author(s):  
xiaoyong Yun ◽  
Tsutomu Ito ◽  
Alexandre Goroborodko ◽  
yoshinobu Motohashi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Post Weld Heat Treatment ◽  
Friction Stir ◽  
Weld Heat

Investigating the effects of traveling speeds and post-weld heat treatment on mechanical properties of nano-Al2O3-fortified AA6061-T6 friction stir welds

2016 ◽  
Vol 232 (10) ◽  
pp. 816-828 ◽  
Author(s):  
H Yousefpour Naghibi ◽  
H Omidvar ◽  
M Farahmand Nikoo
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Solution Heat Treatment ◽  
Microstructural Characterization ◽  
Post Weld Heat Treatment ◽  
Nano Particles ◽  
Friction Stir ◽  
Microscopy Techniques ◽  
Weld Heat

In this study, 6 mm thick AA6061-T6 plates were friction stir welded (FSWed) at different traveling speeds while Al2O3 nano-particles were incorporated between adjoining plates. The solution heat treatment was applied on samples for one hour at 540 ℃ and subsequently aged for 18 h at 180 ℃ to investigate the effect of post-weld heat treatment on mechanical properties of specimens. All joints were investigated macro- and micro-structurally. The microstructural characterization of the FSWed samples was carried out using scanning electron microscopy (SEM) and light microscopy techniques. Distribution of Al2O3 nano-particles in the stir zone was studied by SEM. The specimen FSWed at 40 mm/min exhibited the most homogeneous particles distribution. Tensile properties including ultimate tensile strength, elongation, and fracture surfaces were studied. Microhardness of specimens was also investigated. Surprisingly, all specimens exhibited inferior hardness compared to the as-received AA6061-T6 alloy. This phenomenon was attributed to the dissolution of precipitates during FSW process.

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