TY  - JOUR
T1  - Effect of Zn Interlayer on Microstructure and Mechanical Properties of
Dissimilar Al/Mg Weld by FSW
AU - Farahani, Majid Shirinabadi AU - Divandari, Mehdi 
JO  - International Journal of System Signal Control and Engineering Application
VL  - 9
IS  - 3
SP  - 86
EP  - 96
PY  - 2016
DA  - 2001/08/19
SN  - 1997-5422
DO  - ijssceapp.2016.86.96
UR  - https://makhillpublications.co/view-article.php?doi=ijssceapp.2016.86.96
KW  - Friction stir welding
KW  -aluminum
KW  -magnesium
KW  -Zn interlayer
KW  -intermetallic compound
AB  - In this research, the effect of interlayer thickness of pure Zn on pure Al and Mg joint with lap joint
form of welded top Mg with FSW welding process was investigate. The assumption considered: tool rotation
speed 1600 rpm, welding speed was 40 mm min<sup>&#150;1</sup> and all of weld parameters was constant, pure Zn interlayer
with three thickness were 400, 200 and 100 &mu;, respectively. Welded specimens were examined microscopically
(optical microscope, SEM, EDS) and macroscopically and XRD processes. Microstructure analysis shown that
complex structure composed of Al and Mg layer was obtained in the interface of joint and Mg-Al-Zn solidified
and eutectic structures are visible. There is MgZn<sub>2</sub> intermetallic compound in the Mg and Zn interface and weld 2
zone. The weld shear tensile strength has increase by reduction of Zn interlayer thickness. The maximum weld
shear tensile strength with interlayer pure Zn thickness 100 &mu; was 76 N mm<sup>&#150;2</sup>. The weld zone micro hardness
was much more than two base metals.
ER  -