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Thermo-mechanical and microstructural issues in dissimilar friction stir welding of AA5086-AA6061

Jamshidi Aval, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1007/s10853-010-5213-x
  3. Abstract:
  4. In this research, thermo-mechanical behavior and microstructural events in dissimilar friction stir welding of AA6061-T6 and AA5086-O have been evaluated. The thermo-mechanical responses of materials during the process have been predicted employing a three-dimensional model together with a finite element software, ABAQUS. Then, mechanical properties and microstructures of the weld zone were studied with the aid of experimental observations and model predictions. It is found that the mixing of material in the weld nugget is performed more efficiently when AA5086 is in the advancing side and also the temperature field is distributed asymmetrically resulting in larger thermally affected region in the AA6061 side. Besides, the microstructural studies shows that the microstructures of stirred zone consist of fine equiaxed grains where finer grains are produced in AA6061 side compared to AA5086 side
  5. Keywords:
  6. AA6061-T6 ; Advancing side ; Experimental observation ; Fine equiaxed grains ; Finer grains ; Finite element software ; Micro-structural ; Model prediction ; Properties and microstructures ; Temperature field ; Thermo-mechanical ; Thermo-mechanical behaviors ; Three-dimensional model ; Weld nuggets ; Weld zone ; ABAQUS ; Computer software ; Finite element method ; Friction ; Gas welding ; Mechanical properties ; Microstructure ; Three dimensional ; Welds ; Friction stir welding
  7. Source: Journal of Materials Science ; Volume 46, Issue 10 , 2011 , Pages 3258-3268 ; 00222461 (ISSN)
  8. URL: http://link.springer.com/article/10.1007%2Fs10853-010-5213-x