Microstructure and tensile properties of friction stir welded AZ31B magnesium alloy

2008 ◽  
Vol 472 (1-2) ◽  
pp. 179-186 ◽  
Author(s):  
N. Afrin ◽  
D.L. Chen ◽  
X. Cao ◽  
M. Jahazi
Keyword(s):  
Magnesium Alloy ◽  
Tensile Properties ◽  
Az31b Magnesium Alloy ◽  
Friction Stir

Tensile Properties and Microstructural Evolution of Friction Stir Processed Extruded AZ31B Alloy

2011 ◽  
Vol 110-116 ◽  
pp. 606-610 ◽  
Author(s):  
S. Ramesh Babu ◽  
V.S. Senthil Kumar ◽  
V. Balasubramanian ◽  
G. Madhusudhan Reddy
Keyword(s):  
Magnesium Alloy ◽  
Tensile Properties ◽  
Friction Stir Processing ◽  
Base Material ◽  
Processing Parameters ◽  
Mechanical Twinning ◽  
Ideal Condition ◽  
Az31b Magnesium Alloy ◽  
Friction Stir ◽  
Az31b Alloy

Friction stir processing (FSP) is an emerging surface modification technology for enhancing the sheet metal properties through microstructural refinement at a particular region which might undergo severe plastic deformation. The extruded AZ31B magnesium alloy used in this investigation exhibits very limited ductility accompanied by brittle like behavior at room temperature because of hexagonal packed structure and severe mechanical twinning. Hence, an attempt was made to study the effect of processing parameters such as tool rotational speed and tool traversing speed on tensile properties of friction stir processed AZ31B magnesium alloy. It is found that the friction stir processing of the Magnesium alloy improved the ductility of the material when compared to the base material and also produced an ultrafine equiaxed grain in the processed zone, an ideal condition for the material to exhibit superplasticity.

INVESTIGATION OF PULSE FREQUENCY ON FUSION ZONE CHARACTERISTICS OF GTA WELDED AZ31B MAGNESIUM ALLOY JOINTS

2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Subravel V
Keyword(s):  
Magnesium Alloy ◽  
Tensile Properties ◽  
Fusion Zone ◽  
Welding Speed ◽  
Pulse Frequency ◽  
Pulsed Current ◽  
Az31b Magnesium Alloy ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Different Levels

In this investigation an attempt has been made to study the effect of welding on fusion characteristics of pulsed current gas tungsten arc welded AZ31B magnesium alloy joints. Five joints were fabricated using different levels of welding speed (105 mm/min –145 mm/min). From this investigation, it is found that the joints fabricated using a welding speed of 135 mm/min yielded superior tensile properties compared to other joints. The formation of finer grains and higher hardness in fusion zone and uniformly distributed precipitates are the main reasons for the higher tensile properties of these joints

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