Enhancing mechanical properties of AZ61 magnesium alloy via friction stir processing: Effect of processing parameters

2020 ◽  
Vol 797 ◽  
pp. 139945 ◽  
Author(s):  
X.C. Luo ◽  
L.M. Kang ◽  
H.L. Liu ◽  
Z.J. Li ◽  
Y.F. Liu ◽  
...  
2012 ◽  
Vol 706-709 ◽  
pp. 1823-1828 ◽  
Author(s):  
J.A. del Valle ◽  
P. Rey ◽  
D. Gesto ◽  
D. Verdera ◽  
Oscar A. Ruano

The effect of friction stir processing (FSP), on the microstructure and mechanical properties of a magnesium alloy AZ61 has been analyzed. This is a widely used wrought magnesium alloy provided in the form of rolled and annealed sheets with a grain size of 45 μm. The FSP was performed with an adequate cooling device in order to increase the heat extraction and reduce the processing temperature. The final microstructure showed a noticeable grain size refinement down to values close to 1.8 μm and an important change in texture. The change in texture favors basal slip during tensile testing leading to an increase of ductility and a decrease in yield stress. The stability of the grain size and the creep behavior at high temperatures were investigated. The optimum conditions for superplastic forming were determined; however, the presence of a large amount of cavities precludes the achievement of high superplastic elongations. Additionally, these results are compared with those obtained by severe hot rolling.


2013 ◽  
Vol 16 (5) ◽  
pp. 571-580 ◽  
Author(s):  
Harpreet Singh Arora ◽  
Harpreet Singh Grewal ◽  
Harpreet Singh ◽  
Brij Kumar Dhindaw ◽  
Sundeep Mukherjee

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