Development of novel heating tool friction stir spot welding (HT-FSSW) for AZ31 magnesium alloy

2014 ◽  
Vol 19 (5) ◽  
pp. 369-375 ◽  
Author(s):  
J. Shen ◽  
L. Wen ◽  
X. Luo ◽  
N. Xu ◽  
D. Wang ◽  
...  
2021 ◽  
pp. 109997
Author(s):  
Banglong Fu ◽  
Junjun Shen ◽  
Uceu F.H.R. Suhuddin ◽  
Ayrton A.C. Pereira ◽  
Emad Maawad ◽  
...  

2011 ◽  
Vol 239-242 ◽  
pp. 1437-1441
Author(s):  
Cheng Gang Ding ◽  
Chuan Jun Guo ◽  
Gao Feng Quan ◽  
Feng Wu

The study has examined the influence of FSSW (friction stir spot welding) parameters (rotation speed, downward compression and welding period) on mechanical property (shear resistance force) by conducting FSSW experiments on 3mm-thick AZ31 magnesium alloy plates under the orthogonal design. According to the experiment result, welding period is the major factor that decides the shear resistance force of FSSW joints, optimum welding parameters are: rotation speed(RS) 2450r/min, welding period(WP) 8s, downward compression of the tool shoulder(DCTS) 0.2mm. Microstructure observations show that tiny and even equiaxial grains are formed in WN (Weld nugget zone) and coarse grains with uneven sizes are formed in TMAZ(thermo-mechanically affected zone) and HAZ (Heat affected zone).


2017 ◽  
Vol 867 ◽  
pp. 105-111
Author(s):  
S. Ramesh Babu ◽  
M. Nithin ◽  
S. Pavithran ◽  
B Parameshwaran

The Electrical Resistance Welding (ERW) of Magnesium and Aluminium is more difficult than steel because the welding machines must provide high currents and exact pressures in order to provide the heat necessary to melt the magnesium for proper fusion at the interface in order to produce a sound weld. Further, resistance welding of magnesium requires a backup plate made of steel to conduct the heat to the workpiece material. To overcome this problem, Friction Stir Spot Welding (FSSW) has been developed. In this study, the hardness distribution and the tensile shear strength of FSSW welds in the AZ31B Magnesium alloy has been investigated and it has been found that tool rotational speed and dwell time plays a major role in determining the weld strength. From the experimental study, a tool rotational speed of 1100 rpm and dwell time of 20 s produced good shear strength of 2824 N and the corresponding grain size was 4.54 μm. This result is very well supported by microstructural examinations and hardness distribution studies.


2020 ◽  
Vol 46 (6) ◽  
pp. 7654-7658
Author(s):  
Hirosuke Sonomura ◽  
Tomoatsu Ozaki ◽  
Kazuaki Katagiri ◽  
Yasunori Hasegawa ◽  
Tsutomu Tanaka ◽  
...  

2014 ◽  
Vol 56 ◽  
pp. 750-754 ◽  
Author(s):  
H.M. Rao ◽  
R.I. Rodriguez ◽  
J.B. Jordon ◽  
M.E. Barkey ◽  
Y.B. Guo ◽  
...  

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